{"title":"Universal Wheeley Bars","description":"\u003cp\u003eThree-caster dollies that take a tripod or pier and let you roll a fully assembled telescope out of the garage and back again. Universal models suit most tripods and fork mounts; the heavy-duty and motorised versions carry the larger loads.\u003c\/p\u003e\u003cp\u003eGoods ship factory-sealed — we don't assemble or fit them before despatch. Tell us your mount and total weight and we'll confirm which bar carries it before you order.\u003c\/p\u003e","products":[{"product_id":"jmi-medium-universal-wheeley-bar-telescope-dolly","title":"JMI Medium Universal Wheeley Bar — Telescope Dolly","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe JMI Medium Universal Wheeley Bar is the standard-duty model in JMI's Universal Wheeley Bar line: a welded steel base on locking wheels that carries a fully assembled tripod-mounted telescope from storage to the observing spot in one piece. It is rated for 50 lb total — tripod, mount, OTA and accessories combined — and fits tripods with a tip-to-tip spread between 32.3″ and 36.8″. Tripod feet drop into receptacles of 2-1\/4″ inside diameter, which take feet up to 2″ across. The standard package uses 2-3\/8″ locking caster wheels and 1\/2″ leveling screws. The frame is welded steel with a powder-coat finish, made in the USA, and the bar ships at 40 lb.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThis is a good match if you store a tripod-mounted telescope assembled and want to roll it out with cables, camera and power supply still attached; if the complete rig weighs 50 lb or less; and if the tripod, at observing height, measures between 32.3″ and 36.8″ from foot tip to foot tip. It is also a good match if the route runs over a smooth garage floor, driveway or patio, which is the ground the standard 2-3\/8″ casters are sized for.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e50 lb load rating:\u003c\/strong\u003e Covers the tripod, mount, optical tube and every accessory riding with them.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e32.3″–36.8″ tip-to-tip range:\u003c\/strong\u003e The arms adjust across that span, so one bar covers a range of common tripod footprints.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-1\/4″ foot receptacles:\u003c\/strong\u003e Each receptacle has a 2-1\/4″ inside diameter and takes tripod feet up to 2″ in diameter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-3\/8″ locking casters:\u003c\/strong\u003e Hard-rubber wheels that lock at the observing position so the base stays where it is put.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/2″ leveling screws:\u003c\/strong\u003e Threaded screws take the load off the wheels and bring the base level once parked.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo wheel upgrade paths:\u003c\/strong\u003e 5″ polyurethane wheels raise the setup about 6″, and 10″ pneumatic tires raise it about 3.5″.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWelded steel frame:\u003c\/strong\u003e Powder-coated welded steel, made in the USA, 40 lb as shipped.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eMechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eArms radiate from a welded steel centre, each ending in a cup that captures one tripod foot. The tripod sits in the cups rather than bolting down, so the telescope's own weight holds the geometry. Each arm carries a locking caster and a 1\/2″ leveling screw: the casters roll the load, and the leveling screws thread down at the observing position to lift the frame onto fixed points, which takes the wheels out of the vibration path and levels the base on uneven concrete. Because the tripod is never taken apart, polar alignment, cable routing and balance survive the trip.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRolling an assembled visual rig from a garage or shed out to a driveway or patio pad.\u003c\/li\u003e\n\u003cli\u003eReturning the same telescope to the same observing position night after night with alignment intact.\u003c\/li\u003e\n\u003cli\u003eMoving a tripod-mounted refractor or an 8″ catadioptric with diagonal, eyepieces and power supply attached.\u003c\/li\u003e\n\u003cli\u003eRepositioning a setup mid-session to clear a tree line or a roofline.\u003c\/li\u003e\n\u003cli\u003eParking a telescope in a corner of the garage and wheeling it out without lifting it.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eFit is decided by the tripod's tip-to-tip measurement at observing height, taken between any two feet: this model covers 32.3″ to 36.8″. The receptacles have a 2-1\/4″ inside diameter and accept feet up to 2″ in diameter. The load ceiling is 50 lb for the whole assembly; JMI's Heavy-Duty Shorty, Heavy-Duty Medium and Heavy-Duty Large bars are rated to 300 lb and cover 26.25″–31.25″, 34″–42.5″ and 49″–56.5″ respectively. This bar uses 1\/2″ leveling screws, so the 1\/2″ versions of JMI's wheel upgrades, tow handle and soft-ground feet are the matching parts. Optional 5″ polyurethane wheels raise the setup about 6″, and 10″ pneumatic tires raise it about 3.5″. Tie-down bracket kits are sold separately. Tell us the make and model of your tripod and we will confirm the fit.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe 50 lb rating covers everything on the bar.\u003c\/strong\u003e Tripod, mount, counterweights, optical tube, camera and power supply all count toward it. Imaging rigs commonly run past 50 lb, and JMI's Heavy-Duty models are rated to 300 lb.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe standard 2-3\/8″ casters are sized for hard, flat ground.\u003c\/strong\u003e Grass, gravel and mulch are the ground the 10″ pneumatic tires are made for.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWheel upgrades change the working height.\u003c\/strong\u003e 5″ polyurethane wheels raise the setup about 6″ and 10″ pneumatic tires raise it about 3.5″, which shifts both the eyepiece position and the tip-to-tip figure to measure against.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDoorway clearance with the 10″ tires.\u003c\/strong\u003e JMI's published allowance is a doorway at least 3″ wider than the tip-to-tip distance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWheel upgrades, tow handle and tie-down brackets are separate items.\u003c\/strong\u003e They are ordered on their own, in the 1\/2″ leveling-screw version for this bar.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight as shipped is 40 lb.\u003c\/strong\u003e The bar arrives as a welded steel frame in one carton.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe bar arrives as a welded frame. Setup is a matter of spreading the arms to the tripod's tip-to-tip measurement, lowering the tripod feet into the cups, and running the leveling screws down once the telescope is parked. Nothing on the tripod is modified or drilled.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow is tip-to-tip distance measured?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWith the tripod at its observing height, the measurement runs between any two foot tips. For this model that figure falls between 32.3″ and 36.8″. With 5″ wheels the setup sits about 6″ higher and with 10″ pneumatic tires about 3.5″ higher, so the measurement is taken with that allowance in mind.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the telescope stay aligned?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe tripod is never taken apart, so polar alignment, cable routing and counterweight position stay as they were. Returning to a marked spot on the pad reproduces the same alignment closely.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat surfaces does it roll on?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 2-3\/8″ hard-rubber casters are at home on smooth concrete, asphalt and patio pavers. Cracked concrete suits the 5″ polyurethane wheels, and grass, dirt and gravel suit the 10″ pneumatic tires.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it carry an imaging rig?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt carries 50 lb total. A German equatorial mount with counterweights, optical tube and imaging train usually runs past that figure, and the 300 lb Heavy-Duty models cover those loads.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: a 50 lb standard-duty steel dolly for tripods measuring 32.3″ to 36.8″ tip to tip, on locking 2-3\/8″ casters with 1\/2″ leveling screws, so an assembled visual rig rolls out and rolls back in one trip. Welded steel, made in the USA, 40 lb as shipped.\u003c\/p\u003e","brand":"JMI","offers":[{"title":"Default","offer_id":53296857809007,"sku":"TPWUMED","price":636.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/tpw_med3_5397ac2f-aa09-4edb-b8c4-317e88d4221a.jpg?v=1781714115"},{"product_id":"jmi-heavy-duty-shorty-universal-wheeley-bar-telescope-dolly","title":"JMI Heavy-Duty \"Shorty\" Universal Wheeley Bar — Telescope Dolly","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe JMI Heavy-Duty “Shorty” Universal Wheeley Bar is the shortest-span bar in JMI's heavy-duty Universal line. It carries 300 lb total — tripod, mount, OTA and accessories combined — on a welded steel frame riding 5″ polyurethane locking wheels, and it adjusts to tripods measuring 26.25″ to 31.25″ tip to tip, or from 28.25″ upward when 10″ pneumatic tires are fitted. The tripod foot receptacles have a 2-3\/4″ inside diameter and accept feet up to 2-3\/4″ across. Leveling is handled by 5\/8″ heavy-duty screws. Made in the USA, 50 lb as shipped.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThis is a good match if you run a loaded imaging rig that stays assembled between sessions and want to roll it out with the camera, cabling and power still attached; if the tripod footprint is on the compact side, measuring 26.25″ to 31.25″ tip to tip; and if the path to the observing pad runs through a narrow doorway or between parked cars, where the shortest span in the heavy-duty line has the clearance advantage.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e300 lb load rating:\u003c\/strong\u003e Covers the tripod, mount, counterweights, optical tube and the full imaging train together.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e26.25″–31.25″ tip-to-tip range:\u003c\/strong\u003e The most compact span JMI offers in the heavy-duty Universal series.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-3\/4″ foot receptacles:\u003c\/strong\u003e Sized for the larger feet found on heavy German equatorial tripods, up to 2-3\/4″ in diameter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5″ polyurethane locking wheels:\u003c\/strong\u003e Standard equipment rather than an upgrade, and they roll over cracked concrete and expansion joints without stalling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5\/8″ heavy-duty leveling screws:\u003c\/strong\u003e Heavier thread than the standard-duty line, matched to the 300 lb rating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWelded steel frame:\u003c\/strong\u003e Powder-coated welded steel, made in the USA, 50 lb as shipped.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e10″ pneumatic option:\u003c\/strong\u003e The 5\/8″ version of JMI's 10″ all-terrain tire upgrade fits this bar and raises the minimum span to 28.25″.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eMechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe frame is a welded steel spider with adjustable arms, each ending in a cup that captures one tripod foot. Nothing bolts to the tripod: the mass of the rig seats the feet in the cups and holds the geometry. Each arm carries a locking 5″ polyurethane caster and a 5\/8″ leveling screw. Rolling is done on the casters; at the observing position the leveling screws thread down until they take the load off the wheels, which puts the rig on rigid steel feet instead of rubber and levels the base on a sloped pad. Because the span closes to 26.25″, the outside envelope of the loaded bar stays narrower than the rest of the heavy-duty line, which is what makes the difference at a doorway.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRolling an assembled astrophotography rig out of a garage bay and onto a driveway pad each night.\u003c\/li\u003e\n\u003cli\u003eMoving a compact-footprint German equatorial tripod loaded with counterweights and an imaging train.\u003c\/li\u003e\n\u003cli\u003ePassing through a standard interior or side-entry doorway where a wider bar would not clear.\u003c\/li\u003e\n\u003cli\u003eWorking a crowded garage where the telescope shares floor space with vehicles.\u003c\/li\u003e\n\u003cli\u003eReturning a rig to a marked observing position session after session with alignment intact.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eFit is set by the tripod's tip-to-tip measurement at observing height, taken between any two feet: this bar covers 26.25″ to 31.25″, and 28.25″ is the minimum once 10″ pneumatic tires are fitted. The receptacles are 2-3\/4″ inside diameter and take feet up to 2-3\/4″. Wider tripods are covered by the Heavy-Duty Medium at 34″–42.5″ and the Heavy-Duty Large at 49″–56.5″, both rated to the same 300 lb. This bar uses 5\/8″ leveling screws, so the 5\/8″ versions of JMI's 10″ pneumatic wheel upgrade, tow handle, speed-dial drill adapter, replacement leveling screws and soft-ground feet are the matching parts; the 1\/2″ versions belong to the standard-duty line. Tie-down bracket kits are sold separately. Tell us the make and model of your tripod and we will confirm the fit.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe span is the point of this model.\u003c\/strong\u003e At 26.25″ to 31.25″ it is the narrowest of the heavy-duty bars; tripods wider than 31.25″ at observing height fall to the HD Medium or HD Large.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe 10″ tire upgrade raises the minimum span.\u003c\/strong\u003e With the pneumatic tires fitted the bar no longer closes below 28.25″.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe 300 lb rating is for everything on the bar.\u003c\/strong\u003e Tripod, mount, counterweights, optical tube, cameras, dew heaters and power supplies all count toward it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5\/8″ leveling screws set the accessory version.\u003c\/strong\u003e Accessories listed for 1\/2″ leveling screws belong to the standard-duty bars rather than this one.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWheel upgrades change the working height.\u003c\/strong\u003e The 10″ pneumatic tires raise the mounted scope roughly 3¼″ over the factory caster setup, which shifts the eyepiece position.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight as shipped is 50 lb.\u003c\/strong\u003e The bar arrives as a welded steel frame in one carton.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe frame arrives welded and ready. Setup is a matter of opening the arms to the tripod's tip-to-tip measurement, lowering the three feet into the cups, and running the 5\/8″ leveling screws down once the rig is parked. Nothing on the tripod is drilled or modified.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow is tip-to-tip distance measured?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWith the tripod at observing height, the measurement runs between any two foot tips. This bar covers 26.25″ through 31.25″, with 28.25″ as the floor when 10″ pneumatic tires are fitted.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between the Shorty and the HD Medium?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBoth are welded steel and both carry 300 lb. The Shorty spans 26.25″–31.25″ and the HD Medium spans 34″–42.5″, so the choice follows the tripod's footprint and the clearance along the route.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes polar alignment survive the trip?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe tripod is never disassembled, so alignment, cable routing and counterweight position stay as they were. Marking the tripod position on the pad reproduces the same alignment closely on the next run.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat surfaces does it roll on?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe standard 5″ polyurethane wheels handle concrete, asphalt, pavers and cracked driveways. Grass, gravel, mulch and sand are the ground the 10″ pneumatic upgrade is made for.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: a 300 lb welded steel dolly on 5″ locking polyurethane wheels and 5\/8″ leveling screws, spanning 26.25″ to 31.25″ tip to tip — the narrowest heavy-duty Wheeley Bar JMI builds, for loaded rigs that have to clear a tight doorway. Made in the USA, 50 lb as shipped.\u003c\/p\u003e","brand":"JMI","offers":[{"title":"Default Title","offer_id":53296859480175,"sku":"TPWUSHHD","price":846.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/ProductShotTPWMEDHD5_8af801e7-be48-47c9-8ce0-14af6597d283.jpg?v=1781714178"},{"product_id":"jmi-heavy-duty-medium-universal-wheeley-bar-telescope-dolly","title":"JMI Heavy-Duty Medium Universal Wheeley Bar — Telescope Dolly","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe JMI Heavy-Duty Medium Universal Wheeley Bar is the middle span in JMI's heavy-duty Universal line and the one that fits the widest set of common German equatorial tripods. It carries 300 lb total — tripod, mount, OTA and accessories combined — on a welded steel frame, and adjusts to tripods measuring 34″ to 42.5″ tip to tip. Foot receptacles have a 2-3\/4″ inside diameter and take feet up to 2-3\/4″ across. Leveling is on 5\/8″ heavy-duty screws. It is offered here in two configurations: the standard bar on 5″ polyurethane locking casters, and the same bar supplied with JMI's 10″ all-terrain pneumatic wheel package and tow handle. Made in the USA.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThis is a good match if you keep a loaded mount and optical tube assembled between sessions and want to roll the whole thing out rather than rebuild it; if the tripod measures between 34″ and 42.5″ foot to foot at observing height; and if the rig, counterweights and imaging train together come in under 300 lb. The 5″ caster configuration suits a route over concrete, asphalt or pavers; the 10″ pneumatic configuration suits a route that crosses grass, gravel, mulch, sand or a lawn-to-driveway transition.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e300 lb load rating:\u003c\/strong\u003e Covers the tripod, mount, counterweights, optical tube and the full imaging train together.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e34″–42.5″ tip-to-tip range:\u003c\/strong\u003e The broadest-fitting span in the heavy-duty Universal series.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-3\/4″ foot receptacles:\u003c\/strong\u003e Sized for the larger feet on heavy equatorial tripods, up to 2-3\/4″ in diameter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5″ polyurethane locking wheels:\u003c\/strong\u003e Standard equipment on the caster configuration, and they cross expansion joints and cracked concrete without stalling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5\/8″ heavy-duty leveling screws:\u003c\/strong\u003e The heavier thread matched to the 300 lb rating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e10″ all-terrain option:\u003c\/strong\u003e Six 10″ pneumatic wheels — two front swivel and four rear in dual-inboard pairs — with a tow handle, raising the mounted scope about 3¼″ over the factory caster setup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWelded steel frame:\u003c\/strong\u003e Powder-coated welded steel, made in the USA; the bar itself ships at 50 lb.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eMechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe bar is a welded steel spider with adjustable arms, each ending in a cup that captures one tripod foot. Nothing bolts to the tripod — the mass of the loaded rig seats the feet and holds the geometry. Each arm carries a locking caster and a 5\/8″ leveling screw. Rolling is done on the wheels; at the observing position the leveling screws thread down until they take the load off the casters, putting the rig on rigid steel feet rather than rubber and levelling the base on a sloped pad. The 10″ pneumatic package replaces the factory casters with a six-wheel arrangement, two swivel wheels at the front and four in dual-inboard pairs at the rear, which spreads the footprint and keeps the wheels from sinking on soft ground; the supplied tow handle gives a pulling point clear of the tripod legs.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRolling a fully assembled imaging rig from a garage bay onto a driveway or concrete pad every clear night.\u003c\/li\u003e\n\u003cli\u003eCrossing a lawn between the house and a back-yard observing site with the 10″ pneumatic package.\u003c\/li\u003e\n\u003cli\u003eMoving a heavy German equatorial tripod with counterweights, optical tube, camera and dew control still fitted.\u003c\/li\u003e\n\u003cli\u003eRepositioning a rig mid-session to clear a tree line or a neighbour's roof.\u003c\/li\u003e\n\u003cli\u003eReturning a telescope to a marked pad position night after night with alignment and cabling untouched.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eFit is set by the tripod's tip-to-tip measurement at observing height, taken between any two feet: this bar covers 34″ to 42.5″. The receptacles are 2-3\/4″ inside diameter and take feet up to 2-3\/4″. Narrower tripods are covered by the Heavy-Duty Shorty at 26.25″–31.25″ and wider ones by the Heavy-Duty Large at 49″–56.5″, both rated to the same 300 lb. This bar uses 5\/8″ leveling screws, so the 5\/8″ versions of JMI's 10″ pneumatic wheel upgrade, tow handle, speed-dial drill adapter, replacement leveling screws and soft-ground feet are the matching parts; accessories listed for 1\/2″ leveling screws belong to the standard-duty bars. Tie-down bracket kits are sold separately. Tell us the make and model of your tripod and we will confirm the fit and the right wheel configuration.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe two options differ only in wheels.\u003c\/strong\u003e The 5″ Caster option is the bar as JMI builds it; the 10″ Pneumatic option is the same bar supplied with the 10″ all-terrain wheel package and tow handle, which ships as a second carton.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe 10″ package changes the working height.\u003c\/strong\u003e It raises the mounted scope about 3¼″ over the factory caster setup, which shifts the eyepiece position and the tip-to-tip figure to measure against.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDoorway clearance with the 10″ tires.\u003c\/strong\u003e JMI's published allowance is a doorway at least 3″ wider than the tip-to-tip distance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe 300 lb rating is for everything on the bar.\u003c\/strong\u003e Tripod, mount, counterweights, optical tube, cameras, dew heaters and power supplies all count toward it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5\/8″ leveling screws set the accessory version.\u003c\/strong\u003e The 1\/2″ accessories in the JMI range fit the standard-duty bars rather than this one.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping weight.\u003c\/strong\u003e The bar ships at 50 lb; the 10″ wheel package adds a further 35 lb in its own carton.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe frame arrives welded and ready. Setup is a matter of opening the arms to the tripod's tip-to-tip measurement, lowering the feet into the cups, and running the 5\/8″ leveling screws down once the rig is parked. The 10″ wheel package bolts on in place of the factory casters using the supplied hardware, and nothing on the tripod is drilled or modified either way.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow is tip-to-tip distance measured?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWith the tripod at observing height, the measurement runs between any two foot tips. This bar covers 34″ through 42.5″.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich wheel option suits my site?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 5″ polyurethane casters roll on concrete, asphalt, pavers and cracked driveways. The 10″ pneumatic wheels are built for grass, gravel, mulch, sand, rough pavement and lawn-to-driveway transitions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan the 10″ wheels be added later?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The 10″ pneumatic package is also sold on its own in the 5\/8″ leveling-screw version, which is the one that fits this bar.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes polar alignment survive the trip?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe tripod is never taken apart, so alignment, cable routing and counterweight position stay as they were. Marking the tripod position on the pad reproduces the same alignment closely on the next run.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: a 300 lb welded steel dolly on 5\/8″ leveling screws that fits tripods spanning 34″ to 42.5″ tip to tip, supplied either on 5″ locking polyurethane casters for hard ground or with the six-wheel 10″ pneumatic package and tow handle for grass and gravel. Made in the USA.\u003c\/p\u003e","brand":"JMI","offers":[{"title":"5\" Caster","offer_id":53516065243247,"sku":"TPWUMEDHD-5","price":846.0,"currency_code":"CAD","in_stock":true},{"title":"10\" Pneumatic","offer_id":53516065276015,"sku":"TPWUMEDHD-10","price":1234.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/ProductShotTPWMEDHD5_4e62c17e-657c-4322-9dc1-c59523984c6c.jpg?v=1781714208"},{"product_id":"jmi-heavy-duty-large-universal-wheeley-bar-telescope-dolly","title":"JMI Heavy-Duty Large Universal Wheeley Bar — Telescope Dolly","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe JMI Heavy-Duty Large Universal Wheeley Bar is the widest span in JMI's heavy-duty Universal line, built for the wide-leg tripods that carry observatory-class mounts. It is rated for 300 lb total — tripod, mount, OTA and accessories combined — and adjusts to tripods measuring 49″ to 56.5″ tip to tip. Foot receptacles have a 2-3\/4″ inside diameter and accept feet up to 2-3\/4″ across. It rides on 5″ polyurethane locking wheels with 5\/8″ heavy-duty leveling screws, on a welded steel frame with a powder-coat finish. Made in the USA, 37 lb as shipped.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThis is a good match if your tripod opens to a wide stance — 49″ to 56.5″ between foot tips at observing height — and the rig stays assembled between sessions; if the combined weight of tripod, mount, counterweights and optics falls under 300 lb; and if you would rather roll the whole assembly out to a pad than break it down and rebuild it. The wide stance also puts the eyepiece higher off the ground than the narrower bars do, which suits long refractors and large catadioptrics.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e300 lb load rating:\u003c\/strong\u003e Covers the tripod, mount, counterweights, optical tube and everything bolted to it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e49″–56.5″ tip-to-tip range:\u003c\/strong\u003e The widest span JMI offers in the Universal series.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-3\/4″ foot receptacles:\u003c\/strong\u003e Sized for the large feet on observatory-class tripods, up to 2-3\/4″ in diameter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5″ polyurethane locking wheels:\u003c\/strong\u003e Standard rather than an upgrade, and they cross expansion joints and cracked concrete without stalling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5\/8″ heavy-duty leveling screws:\u003c\/strong\u003e The heavier thread matched to the 300 lb rating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWelded steel frame:\u003c\/strong\u003e Powder-coated welded steel, made in the USA, 37 lb as shipped.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e10″ pneumatic option:\u003c\/strong\u003e The 5\/8″ version of JMI's 10″ all-terrain tire upgrade fits this bar and raises the setup about 3.5″.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eMechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe frame is a welded steel spider with long adjustable arms, each ending in a cup that captures one tripod foot. Nothing bolts to the tripod — the mass of the loaded rig seats the feet in the cups and holds the geometry. Each arm carries a locking 5″ polyurethane caster and a 5\/8″ leveling screw. The casters take the load while the rig is rolling; at the observing position the leveling screws thread down until the frame lifts clear of the wheels, which puts the rig on rigid steel feet rather than rubber and levels the base on a sloped pad. Because the arms reach out to 56.5″, the footprint is broad enough to keep a tall, wide-stance tripod stable through the move.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRolling a wide-stance observatory-class tripod out of a garage or roll-off shed onto a concrete pad.\u003c\/li\u003e\n\u003cli\u003eMoving a large refractor or catadioptric on a heavy equatorial mount with counterweights fitted.\u003c\/li\u003e\n\u003cli\u003eKeeping an assembled rig on a fixed pad position so alignment and cabling survive between sessions.\u003c\/li\u003e\n\u003cli\u003eRepositioning a large setup mid-session to clear an obstruction on the horizon.\u003c\/li\u003e\n\u003cli\u003eShifting a permanent-style setup indoors when weather closes in.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eFit is set by the tripod's tip-to-tip measurement at observing height, taken between any two feet: this bar covers 49″ to 56.5″. The receptacles are 2-3\/4″ inside diameter and accept feet up to 2-3\/4″. Narrower tripods are covered by the Heavy-Duty Medium at 34″–42.5″ and the Heavy-Duty Shorty at 26.25″–31.25″, both rated to the same 300 lb. This bar uses 5\/8″ leveling screws, so the 5\/8″ versions of JMI's 10″ pneumatic wheel upgrade, tow handle, speed-dial drill adapter, replacement leveling screws and soft-ground feet are the matching parts; accessories listed for 1\/2″ leveling screws belong to the standard-duty bars. Tie-down bracket kits are sold separately. Tell us the make and model of your tripod and we will confirm the fit.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe span is what separates this model from the HD Medium.\u003c\/strong\u003e Both carry 300 lb; this one covers 49″ to 56.5″ and the HD Medium covers 34″ to 42.5″, so the tripod's stance decides which applies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe wide stance needs room at the door.\u003c\/strong\u003e With the 10″ pneumatic tires fitted, JMI's published allowance is a doorway at least 3″ wider than the tip-to-tip distance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe 300 lb rating is for everything on the bar.\u003c\/strong\u003e Tripod, mount, counterweights, optical tube, cameras and power supplies all count toward it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe 10″ upgrade changes the working height.\u003c\/strong\u003e It raises the setup about 3.5″, which shifts the eyepiece position and the tip-to-tip figure to measure against.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5\/8″ leveling screws set the accessory version.\u003c\/strong\u003e The 1\/2″ accessories in the JMI range fit the standard-duty bars rather than this one.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight as shipped is 37 lb.\u003c\/strong\u003e The bar arrives as a welded steel frame in one carton.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe frame arrives welded and ready. Setup is a matter of opening the arms to the tripod's tip-to-tip measurement, lowering the feet into the cups, and running the 5\/8″ leveling screws down once the rig is parked. Nothing on the tripod is drilled or modified.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow is tip-to-tip distance measured?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWith the tripod at observing height, the measurement runs between any two foot tips. This bar covers 49″ through 56.5″.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it fit a narrower tripod?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe arms close to 49″. Tripods that measure less than that at observing height fall to the HD Medium, which covers 34″ to 42.5″ at the same 300 lb rating.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes polar alignment survive the trip?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe tripod is never taken apart, so alignment, cable routing and counterweight position stay as they were. Marking the tripod position on the pad reproduces the same alignment closely on the next run.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat surfaces does it roll on?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe standard 5″ polyurethane wheels handle concrete, asphalt, pavers and cracked driveways. Grass, gravel, mulch and sand are the ground the 10″ pneumatic upgrade is made for.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: a 300 lb welded steel dolly on 5″ locking polyurethane wheels and 5\/8″ leveling screws, spanning 49″ to 56.5″ tip to tip — the widest Universal Wheeley Bar JMI builds, for wide-stance tripods carrying observatory-class rigs. Made in the USA, 37 lb as shipped.\u003c\/p\u003e","brand":"JMI","offers":[{"title":"Default Title","offer_id":53296860201071,"sku":"TPWULGHD","price":846.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/TPWULG5.jpg?v=1781714231"},{"product_id":"jmi-astro-physics-pier-mount-wheeley-bars","title":"JMI Astro-Physics Pier Mount Wheeley Bars","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe JMI Astro-Physics Pier Mount Wheeley Bars are built for Astro-Physics pier mounts rather than for adjustable-leg tripods. The set carries 300 lb total — pier, mount, OTA and accessories combined — on a welded steel frame with 5″ polyurethane locking wheels and 5\/8″ heavy-duty leveling screws. JMI lists the fit as Astro-Physics 6″, 8″ and 10″ pier mounts, covering the AP 400, 600, 800, 900 and 1200. The footprint matches the HD Medium Wheeley Bar, in heavier-duty construction, and the frame sets up at three widths: 29″–34″ at its narrowest, 33″–40″ in the normal setting and 38″–47″ at its widest. Made in the USA, 34 lb as shipped.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThis is a good match if you own an Astro-Physics pier mount and store the pier, mount and optical tube assembled; if you would rather roll the complete rig between a garage or shed and an observing pad than break the pier down each session; and if the combined weight of pier, mount, counterweights and optics falls under 300 lb. It suits a routine where the same setup returns to the same marked spot night after night with alignment and cabling untouched.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurpose-built for AP piers:\u003c\/strong\u003e Fits the Astro-Physics 6″, 8″ and 10″ pier mounts used under the AP 400, 600, 800, 900 and 1200.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e300 lb load rating:\u003c\/strong\u003e Covers the pier, mount, counterweights, optical tube and everything bolted to it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree width settings:\u003c\/strong\u003e 29″–34″ narrowest, 33″–40″ normal and 38″–47″ widest, so the stance can be matched to the doorway and the pad.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5″ polyurethane locking wheels:\u003c\/strong\u003e Standard equipment, and they cross expansion joints and cracked concrete without stalling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5\/8″ heavy-duty leveling screws:\u003c\/strong\u003e The heavier thread used across JMI's heavy-duty line.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavier-duty frame:\u003c\/strong\u003e The HD Medium footprint in a heavier build, welded steel with a powder-coat finish, made in the USA, 34 lb as shipped.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eMechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eA pier presents a fixed base rather than three adjustable legs, so this set takes the load through a welded steel frame sized to the AP pier footprint instead of through foot cups on splayed tripod arms. Each arm carries a locking 5″ polyurethane caster and a 5\/8″ leveling screw. The casters take the weight while the rig is rolling; at the observing position the leveling screws thread down until the frame lifts clear of the wheels, putting the pier on rigid steel points rather than rubber and levelling the base on a sloped pad. The three width settings change the outside envelope of the loaded assembly, which is what governs whether it clears a doorway on the way out.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRolling an assembled Astro-Physics pier, mount and optical tube from a garage bay onto a concrete observing pad.\u003c\/li\u003e\n\u003cli\u003eReturning a pier-mounted rig to a marked pad position session after session with alignment and cabling intact.\u003c\/li\u003e\n\u003cli\u003eMoving a pier-mounted imaging setup indoors when weather closes in, without stripping the imaging train.\u003c\/li\u003e\n\u003cli\u003eRepositioning a heavy pier setup on the pad to clear a tree line or a roofline.\u003c\/li\u003e\n\u003cli\u003eStoring an AP pier rig in a shed or roll-off building and wheeling it out at the start of each session.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eJMI lists the fit as Astro-Physics 6″, 8″ and 10″ pier mounts, covering the AP 400, 600, 800, 900 and 1200. The footprint matches the HD Medium Wheeley Bar in heavier-duty construction, and the frame sets to 29″–34″, 33″–40″ or 38″–47″ in width. Adjustable-leg tripods are covered instead by the Universal series: the Heavy-Duty Shorty at 26.25″–31.25″, the Heavy-Duty Medium at 34″–42.5″ and the Heavy-Duty Large at 49″–56.5″, all rated to 300 lb. This set uses 5\/8″ leveling screws, so the 5\/8″ versions of JMI's tow handle, speed-dial drill adapter, replacement leveling screws and soft-ground feet are the matching parts; accessories listed for 1\/2″ leveling screws belong to the standard-duty bars. Tie-down bracket kits are sold separately. Tell us which Astro-Physics pier and mount you are running and we will confirm the fit.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis set is matched to AP piers rather than tripods.\u003c\/strong\u003e Adjustable-leg tripods are the Universal series' territory, and those bars use foot cups sized to tripod feet.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe 300 lb rating is for everything on the frame.\u003c\/strong\u003e Pier, mount, counterweights, optical tube, cameras and power supplies all count toward it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe width setting governs doorway clearance.\u003c\/strong\u003e The frame runs 29″–34″ at its narrowest and 38″–47″ at its widest, so the route out of the building decides which setting is workable.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5\/8″ leveling screws set the accessory version.\u003c\/strong\u003e The 1\/2″ accessories in the JMI range fit the standard-duty bars rather than this set.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight as shipped is 34 lb.\u003c\/strong\u003e The frame arrives welded, in one carton.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailability.\u003c\/strong\u003e JMI builds this set to order and it moves in and out of stock; we can give you a current lead time before you order.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe frame arrives welded. Setup is a matter of choosing the width setting that suits the pier and the route, seating the pier base on the frame, and running the 5\/8″ leveling screws down once the rig is parked. Nothing on the pier is drilled or modified.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich Astro-Physics piers does it fit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eJMI lists the 6″, 8″ and 10″ Astro-Physics pier mounts, which covers piers used under the AP 400, 600, 800, 900 and 1200 mounts.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow is it different from a Universal Wheeley Bar?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Universal bars capture three tripod feet in cups and adjust across a tip-to-tip span. This set is sized to the fixed base of an AP pier and is built heavier for the same 300 lb rating, on the HD Medium footprint.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes polar alignment survive the trip?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe pier and mount are never taken apart, so alignment, cable routing and counterweight position stay as they were. Marking the pad position reproduces the same alignment closely on the next run.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat surfaces does it roll on?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 5″ polyurethane wheels handle concrete, asphalt, pavers and cracked driveways, which is the ground a loaded pier is usually moved across.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: a 300 lb welded steel Wheeley Bar set sized to Astro-Physics 6″, 8″ and 10″ pier mounts, on 5″ locking polyurethane wheels and 5\/8″ leveling screws, with three width settings from 29″ to 47″, so a complete AP pier rig rolls out and rolls back in one piece. Made in the USA, 34 lb as shipped.\u003c\/p\u003e","brand":"JMI","offers":[{"title":"Default Title","offer_id":53296860299375,"sku":"TPWAP","price":868.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/wheeley-bars-3.jpg?v=1781714251"},{"product_id":"jmi-motorized-universal-wheeley-bar-powered-telescope-dolly","title":"JMI Motorized Universal Wheeley Bar Drive Unit — Add-On for Heavy-Duty Wheeley Bars","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe JMI Motorized Universal Wheeley Bar drive unit adds powered movement to a Heavy-Duty Universal Wheeley Bar. It replaces the front section of an existing heavy-duty bar with a 12-volt motorized drive assembly, so a fully assembled tripod-mounted telescope travels between storage and the observing pad under power rather than by hand. The unit ships with 10″ pneumatic tires, a tow handle, a steel battery pack holder and a 5\/8″ variable speed dial, and weighs 34 lb. JMI builds it in the USA.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThis is a good match if you already own a Heavy-Duty Universal Wheeley Bar in its 10″ pneumatic tire configuration and would rather the roll-out happened under power — a heavy imaging rig, a long run between the garage and the observing pad, or a setup where moving a loaded tripod by hand takes more effort than you want to spend on it.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e12-volt powered drive:\u003c\/strong\u003e A motorized drive unit moves the loaded bar under its own power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariable speed control:\u003c\/strong\u003e A 5\/8″ speed dial sets the travel rate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e10″ pneumatic tires:\u003c\/strong\u003e Air-filled tires are included with the unit and carry the load over uneven ground.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTow handle:\u003c\/strong\u003e Included for steering the bar as it travels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSteel battery pack holder:\u003c\/strong\u003e Included, and carries the 12-volt battery that powers the drive.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWelded steel construction:\u003c\/strong\u003e The drive unit is welded steel, matching the Wheeley Bar frame it joins.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt in the USA:\u003c\/strong\u003e Designed and manufactured by JMI.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eMechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe motorized unit is not bolted on alongside the existing bar — it takes the place of the front section of a Heavy-Duty Wheeley Bar. The drive assembly, its two 10″ pneumatic tires and the battery holder arrive as one front-end module, and the rear section of the original bar stays as it is. Because the drive sits at the front and the tow handle steers from the same end, the loaded telescope tracks behind the powered wheels instead of being pushed from the rear. The 5\/8″ speed dial feeds the 12-volt motor, so travel speed is set by the dial rather than by how hard the bar is pushed.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRolling a fully assembled imaging rig from a garage or shed out to a backyard pad under power\u003c\/li\u003e\n\u003cli\u003eMoving a heavy mount, OTA, cameras and cabling in one trip without breaking the setup down\u003c\/li\u003e\n\u003cli\u003eCovering longer distances between storage and the observing position than are comfortable to push by hand\u003c\/li\u003e\n\u003cli\u003eObservatory workflows where the telescope is rolled out and back on a regular schedule\u003c\/li\u003e\n\u003cli\u003eSetups where the loaded weight of the rig makes a hand-pushed bar hard to start and stop\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eJMI publishes this drive unit in three fitments, each matched to the bar it joins: TPWMTR-MEDHD for the Heavy-Duty Medium Wheeley Bar, TPWMTR-LG for the Heavy-Duty Large Wheeley Bar, and TPWMTR-AP for the Astro-Physics pier mount Wheeley Bar. All three call for the host bar to be in its 10″ pneumatic tire configuration. JMI also lists a TPWMTR version for Heavy-Duty Shorty owners and asks that Shorty fitment be checked with them before an order is placed. The unit powers the bar; the telescope, mount, tripod and the Wheeley Bar itself are separate items. Tell us which Wheeley Bar you own and which tires are on it, and we'll confirm the fitment and sort the right version for you.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is an add-on rather than a complete Wheeley Bar.\u003c\/strong\u003e JMI states plainly that the motorized unit is an add-on and replaces the front section of an existing Heavy-Duty Wheeley Bar. A bar is needed for it to attach to, and is bought separately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe host bar uses the 10″ pneumatic tire configuration.\u003c\/strong\u003e The drive unit is built around that setup, so bars on other wheel options are outside its published fitment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe battery is not included.\u003c\/strong\u003e JMI recommends a 12-volt battery of 17 amp-hours or greater. It is chosen and supplied separately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe unit weighs 34 lb on its own.\u003c\/strong\u003e That is the drive module by itself, before the bar, mount or telescope are counted.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment is version-specific.\u003c\/strong\u003e The Medium Heavy-Duty, Large and Astro-Physics pier versions are distinct items rather than one adjustable unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation is done by the owner.\u003c\/strong\u003e JMI quotes 15 to 30 minutes with basic hand tools.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs it difficult to install?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eJMI quotes 15 to 30 minutes using basic hand tools. The unit replaces the front section of the existing bar, so the work is removing that section and fitting the drive module in its place.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this replace my Wheeley Bar, or work with it?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt works with it. The drive unit becomes the front section of a Heavy-Duty Wheeley Bar you already own; the rear section of that bar stays in service.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat battery does it take?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA 12-volt battery, with JMI recommending 17 amp-hours or greater. The steel holder that carries it is included; the battery itself is not.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow is the speed controlled?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThrough a 5\/8″ speed dial on the unit, which gives variable speed rather than a single fixed rate.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich version fits my bar?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTPWMTR-MEDHD suits the Heavy-Duty Medium bar, TPWMTR-LG the Heavy-Duty Large, and TPWMTR-AP the Astro-Physics pier mount version. Shorty fitment is checked with JMI first. We are happy to match it to your bar if you tell us the model.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat comes in the box?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe motorized drive unit, 10″ pneumatic wheels, the tow handle, the steel battery pack holder and the 5\/8″ speed dial.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: this is the 12-volt powered front end for a Heavy-Duty Universal Wheeley Bar, supplied with 10″ pneumatic tires, tow handle, battery holder and variable speed dial at 34 lb, and built by JMI in the USA. Paired with the bar it is made for, it turns the roll-out into a powered trip.\u003c\/p\u003e","brand":"JMI","offers":[{"title":"Default Title","offer_id":53296860364911,"sku":"TPWUMOT","price":2396.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/wheeley-bars-2_7997425a-3f87-4307-aa99-ec04be376974.jpg?v=1781714270"}],"url":"https:\/\/ontariotelescope.com\/collections\/jmi-universal-wheeley-bars.oembed","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}