JMI Heavy-Duty Medium Size Universal Wheeley Bar Telescope Dolly

(2 reviews)

$853.00 $658.30

Product Specifications:

Maximum Load:  300 lbs
Adjusts to fit tripods with tip-to-tip distance from 34″ to 42.5″
See doorway measurements for more dimensions.
Tip receptacle is 2-3/4″ I.D. Will not fit tripods with feet larger than 2-3/4 inches

 

 

 

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JMI HEAVY-DUTY Medium Size Universal Wheeley Bar Telescope Dolly

JMI HEAVY-DUTY Medium Size Universal Wheeley Bar Telescope Dolly is a portable dolly for your telescope.

Constructed of a sturdy base with locking wheels and leveling bolts, the heavy-duty version is designed with heavier telescopes in mind. Save your back! Our Wheeley Bars create an easier and faster way to move mounted telescopes to and from observing locations.

Easily move, lock and level the complete telescope assembly from location to location without the need to disconnect and reconnect all the electrical and computer cabling during transport. Standard equipment includes Heavy Duty 5/8″ Leveling Screws.

This HEAVY-DUTY Version is designed for heavier equipment with the same footprint as the standard Medium Wheeley Bars but with stronger, heavier-duty construction.  Because of the increased weight with the same base width, there will be a greater risk of toppling over due to the high center of gravity.  To prevent damage from falling over, the equipment will need to be strapped down to the Wheeley Bars. As with all Wheeley Bars, JMI will not be responsible for equipment tipping over.

All Medium Heavy Duty Wheeley Bars fit tripod tip-to-tip distance of 34 – 42.5 inches.
Tip receptacle is 2-3/4″ I.D. Will not fit tripods with feet larger than 2-3/4 inches.

The 2 3/8″ wheels and 1/2″ leveling screws are no longer available on the Medium Heavy Duty Wheeley Bars. The Standard Package now comes with 5″ Wheels and the Heavy Duty 5/8″ Leveling Screws.

Video Instructions

What is Tip-to-Tip Distance?

To be sure that your tripod or pier will fit a particular Wheeley Bar product, it may be necessary to verify the tip-to-tip distance of the mount.

Usually, this measurement is made with the legs of a tripod fully retracted (the shortest length) and spread out completely.  Or, you can measure at your preferred viewing height. Remember to deduct allowance for the height of the Wheeley Bars (listed with each product).  The tip-to-tip distance is the measurement from the outside edge of the end of a tripod leg or pier foot (where it touches the ground) to the outside edge of another tripod leg or pier foot.

Doorway Measurements

We often get questions regarding the width of our Wheeley Bars to determine if they will fit through a particular doorway.  The following information should help in making that determination.  

The following dimensions do not apply to Wheeley Bars that have been upgraded with 10″ large wheels.  For Universal Wheeley Bars with the 10″ Large Wheel Upgrade the doorway width must be three (3)  inches wider than the tip-to-tip distance.

There are three basic measurements as noted above.

  • The maximum width (X) is measured in a similar fashion as the tip-to-tip distance except that the measurement is made to the outside corner of the legs or leveling screws (typically about 3″ wider than the tip-to-tip measurement of a pointed tip tripod mount).
  • The minimum measurement (N) is from the end of one leg to the inside measurement on the opposite side.  This would help in determining the narrowest door that the Wheeley Bars could possibly be maneuvered through.
  • A third measurement (W) is in between the other two and gives the width as measured from the end of one leg to the outside measurement of the opposite side.

The illustration on the left shows the Universal Wheeley Bars turned so they can be pushed through the doorway based on the NORMAL width (W) without having to do any special maneuvering.

The second illustration shows the Universal Wheeley Bars being maneuvered by twisting them through the doorway based on the absolute MINIMUM dimension (N).

The third illustration shows the Wheeley Bars being blocked from moving though a doorway because they are positioned such that the MAXIMUM profile (X) is being presented.

Universal Wheeley Bars are called Universal because they are made to be adjustable to handle various sizes of mounts.  This means that the measurement we have been talking about can vary depending on the in-out adjustment of the Wheeley Bar legs.  The table below shows the minimum and maximum for the different widths indicated by the variable W, N and X.

 

Width Dimensions for Universal Wheeley Bars
Size Normal Width
(W)
Minimum Width
(N)
Maximum Width
(X)
Min Max Min Max Min Max
Medium 32″ 36″ 22.625″ 25.625″ 36″  41″
Medium HD 33″ 40″ 29″ 34″ 38″ 47″
Large 44.75″ 49.75″ 36.5″ 40″ 50.5″  56.5″
Extra Large            
Max            

What Size Wheels Should I Purchase?

For hard surfaces, such as concrete sidewalks, with seams or cracks, the 5″ polyurethane wheels are best.

The large 10″ all-terrain pneumatic rubber-tire wheels are designed for field use on rough surfaces such as grass, dirt and gravel.  However, great care must be taken in maneuvering on these surfaces, particularly when wet, because the wheels may sink below the surface.

We do not recommend using Wheeley Bars on these surfaces under adverse conditions, especially if you have a very heavy telescope.

  1. David West (verified owner)

    Love the product and the optional pneumatic wheels.

  2. Christopher Anderson (verified owner)

    Phenomenally well built. I have the Heavy Duty Medium Wheely Bars with the 10″ pneumatic wheel option, and the 5.8″ Speed Dial. This is a must for leveling! This holds both my Takahashi FSQ and TOA refractors (dual-mounted) on an Astro-Physics 1100-GTO AE, all atop an ATS 10″ pier. Perfect for wheeling out of the garage for quick aligning and imagery/observational astronomy. https://photos.app.goo.gl/PrPLv2NUP4zLc7ER6 CG Anderson/Copper Penny Observatory.

Only logged in customers who have purchased this product may leave a review.

Doorway Measurements

We often get questions regarding the width of our Wheeley Bars to determine if they will fit through a particular doorway.  The following information should help in making that determination.  

The following dimensions do not apply to Wheeley Bars that have been upgraded with 10″ large wheels.  For Universal Wheeley Bars with the 10″ Large Wheel Upgrade the doorway width must be three (3)  inches wider than the tip-to-tip distance.

There are three basic measurements as noted above.

  • The maximum width (X) is measured in a similar fashion as the tip-to-tip distance except that the measurement is made to the outside corner of the legs or leveling screws (typically about 3″ wider than the tip-to-tip measurement of a pointed tip tripod mount).
  • The minimum measurement (N) is from the end of one leg to the inside measurement on the opposite side.  This would help in determining the narrowest door that the Wheeley Bars could possibly be maneuvered through.
  • A third measurement (W) is in between the other two and gives the width as measured from the end of one leg to the outside measurement of the opposite side.

The diagrams below illustrate the three measurements:

    

The illustration on the left shows the Universal Wheeley Bars turned so they can be pushed through the doorway based on the NORMAL width (W) without having to do any special maneuvering.

The second illustration shows the Universal Wheeley Bars being maneuvered by twisting them through the doorway based on the absolute MINIMUM dimension (N).

The third illustration shows the Wheeley Bars being blocked from moving though a doorway because they are positioned such that the MAXIMUM profile (X) is being presented.

Universal Wheeley Bars are called Universal because they are made to be adjustable to handle various sizes of mounts.  This means that the measurement we have been talking about can vary depending on the in-out adjustment of the Wheeley Bar legs.  The table below shows the minimum and maximum for the different widths indicated by the variable W, N and X.

 

Width Dimensions for Universal Wheeley Bars
Size Normal Width
(W)
Minimum Width
(N)
Maximum Width
(X)
Min Max Min Max Min Max
Medium 32″ 36″ 22.625″ 25.625″ 36″  41″
Medium HD 33″ 40″ 29″ 34″ 38″ 47″
Large 44.75″ 49.75″ 36.5″ 40″ 50.5″  56.5″
Extra Large            
Max            

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