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Heavy-Duty Dob Mover12″–14″ Class
Save your back on setup night. The JMI Sky Trekker 350 rolls 12″ to 14″ class Dobsonian telescopes from indoor storage to your observing site as a single assembled unit — no breaking down the OTA, no awkward staging trips. Four 10″ pneumatic wheels and a tow handle make uneven terrain a non-issue, and the welded steel base accepts any Dobsonian with a 28″ to 32″ ground board.
Specifications
Fits Dobsonian class
12″–14″ class Dobsonian telescopes
Ground board diameter
28″ to 32″ (outside diameter)
Wheels
Four 10″ pneumatic all-terrain tires + tow handle
Lift height
Raises mount approximately 4″ to 5″ off the ground
Footprint
33″ wide (at rear wheels) × 53″ long (front to back including wheels)
Construction
Welded steel, locking wheels, leveling bolts
Origin
Designed and built by JMI in the USA — part of the CXB Astro family
Best for
Orion SkyQuest XX12g / XX14g / XX14i and other 12″–14″ Dobs with 28–32″ ground boards
Sky Trekker Family at a Glance
Model
Fits
Fit measurement
Sky Trekker 350This model
12″–14″ Dobs
ground board: 28″–32″ diameter
Have a Triangle-base Dob, or a different mount style? See the complete Wheeley Bars range.
Telescopes Known to Fit
- Orion SkyQuest XX12g GoTo Dobsonian
- Orion SkyQuest XX14g GoTo Dobsonian
- Orion SkyQuest XX14i IntelliScope
- Adaptable to other Dobsonians with 28″ to 32″ diameter ground board
- The feet on your ground board may need to be repositioned to align with the Sky Trekker 350. The heavier the loaded telescope, the more carefully the assembly should be moved — always push or pull below the center of gravity. Don't see your model? Email support@cxbastro.com with your Dob's ground board diameter and we'll confirm fit.
Tip: Want to lock the bar to a deck or trailer for transport? Add a Wheeley Bar tie-down strap from the accessories collection.
What's Included
10″ Pneumatic Tires
Four all-terrain wheels handle grass, gravel, and driveway transitions without binding under heavy loads.
Tow Handle
Built-in handle for one-person push or pull operation, even with a fully loaded 14″ Dob on top.
Welded Steel Base
Heavy-gauge frame with locking wheels and leveling bolts for stable, vibration-free observing.
See It in Action
How to Measure Your Dob's Ground Board
The ground board is the bottom circular disc your Dobsonian's rocker box rotates on — the part that sits flat on the ground (or on your Wheeley Bar). Measure the outside diameter straight across, foot to opposite foot through the center. If your ground board falls between 28″ and 32″, the Sky Trekker 350 will work; foot positions on the board may need a small adjustment to align with the bar's mounting points.
Frequently Asked Questions
How do I measure my ground board diameter?
Measure the outside diameter of your Dobsonian's bottom ground board (the circular base disc the rocker sits on). Measure straight across, foot to opposite foot through the center. The Sky Trekker 350 adapts to ground boards from 28″ to 32″. Some scopes may require relocating one or more feet to align with the bar's mounting points.
Will my Dobsonian fit the Sky Trekker 350?
If your ground board is 28″ to 32″ in diameter, yes. Confirmed fits include the Orion SkyQuest XX12g GoTo, XX14g GoTo, and XX14i IntelliScope. Other 12″–14″ class Dobsonians with ground boards in this range will also work, though foot placement on the board may need a small adjustment. If you're not sure, email support@cxbastro.com with your ground board diameter and we'll confirm.
Why don't the Sky Trekker bars have wheel options?
The Sky Trekker series ships with 10″ pneumatic all-terrain wheels as standard equipment. The larger wheel size is what makes these bars work under heavier Dobsonian loads — smaller swivel casters wouldn't roll reliably over grass, gravel, or driveway transitions with a 12″–14″ Dob on top, so we don't offer them as a downgrade option.
Will it fit through my doorway?
The Sky Trekker 350 is 33″ wide at the rear wheels. Standard interior residential doorways are 28″–32″, so it likely won't pass through those. Exterior doors (typically 36″) and garage door openings handle it fine. If you'll route it through a 30″ interior doorway regularly, the smaller Sky Trekker 300 is a better fit.
Not sure which Wheeley Bar matches your scope?
Read the JMI Wheeley Bars buyer's guide or browse the full Wheeley Bars collection.
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