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Brackets & mounts
Brompton handlebar mount for Garmin Edge computers
Brompton M and S bars have a 22.2 mm grip section and very little real estate once the brake levers and shifter are on, so a normal out-front mount does not fit and interferes with the fold. This compact mount clamps the 22.2 mm bar with a single M5 bolt, offsets a Garmin quarter-turn socket 20 mm inward toward the stem and tilts it 10 degrees toward the rider. The clamp is 12 mm wide with 3 mm walls, the socket has the four Garmin tabs with 0.2 mm clearance, and it prints on its side in PETG for a strong hinge area. Open the ready-made model free, resize it on your phone or computer, then download a print-ready STL, 3MF or G-code sliced for your printer, free.Opening the ready-made model and downloading it as STL or 3MF are free, no card; AI changes use credits, from Maker at $7.99 a month.No printer? We print this part and ship it to your door. See its priceUpdated
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Adjust
Change its numbers in the viewer for free, or ask the AI in the chat: wall thickness, hole size, the thing it clips onto. AI changes use 2 credits per request (1 for a quick edit, 3 for a redesign), paid with a plan from Maker at $7.99 a month.3Print
Download a watertight STL or 3MF free, with your numbers and hand edits, or G-code sliced for your printer at the same price. After an AI change the download is included in every plan (4 credits without one).
Dimensions of the ready-made model (editable)
| Parameter | Value |
|---|---|
| handlebar outer diameter | 22.2 mm |
| fit clearance | 0.2 mm |
| wall thickness of clamp | 3 mm |
| width of clamp along bar axis | 12 mm |
| M5 clearance hole | 5.3 mm |
| counterbore for bolt head | 9 |
| length of clamp ears (closing flaps) | 10 mm |
| sideways offset | 20 mm |
| 3mm wall | 3 mm |
Example prompt
Model a compact bike computer mount with a 22.2 mm split handlebar clamp 12 mm wide closed by one M5 bolt, a Garmin quarter-turn socket with four tabs offset 20 mm sideways and tilted 10 degrees toward the rider, 3 mm walls and 0.2 mm clearance.
Fit notes
A downloaded mount for a 31.8 mm bar simply will not close on a Brompton, and shimmed ones slip. In SpeakCAD you give the exact bar diameter, the offset that clears your levers and the tilt you want, preview it in the browser, adjust in the chat, then download the STL.
Questions people ask about a Brompton handlebar mount for Garmin Edge computers
Brompton M and S bars have a 22.2 mm grip section and very little real estate once the brake levers and shifter are on, so a normal out-front mount does not fit and interferes with the fold. This compact mount clamps the 22.2 mm bar with a single M5 bolt, offsets a Garmin quarter-turn socket 20 mm inward toward the stem and tilts it 10 degrees toward the rider. The clamp is 12 mm wide with 3 mm walls, the socket has the four Garmin tabs with 0.2 mm clearance, and it prints on its side in PETG for a strong hinge area.
Click Open it free on this page and create a free account (no card): the ready-made model opens in your browser, on your phone or computer, nothing to install. Change its numbers in the viewer for free and download a watertight STL or 3MF free, or G-code sliced for your printer at the same price. An AI change in the chat uses 2 credits per request (3 for a redesign), and the download after it is included in every plan (4 credits without one). Start with Maker: 50 credits a month for $7.99, cancel anytime.
On this page: open the ready-made model free in a SpeakCAD account (no card), change any dimension in the viewer, then download the STL or 3MF free, or G-code sliced for your printer at the same price.
A shared STL is modelled for someone else's measurements. Here you open the ready-made model free, change it to your measurements in the viewer, then download a file sized for the part you actually own, free as STL or 3MF.
Yes. SpeakCAD slices the part on its servers with OrcaSlicer and your printer's official profile (380+ printers, including Bambu Lab, Prusa, Creality and Elegoo), and you download the G-code (a sliced .gcode.3mf for Bambu Lab printers). G-code sliced for your printer costs the same as the STL: included in every plan, free for a part you shaped by hand, 4 credits without a plan for a part with AI work in it. Pick your printer on the printers page to see its profile.
No. SpeakCAD runs in the browser on your phone or computer: the chat, the 3D engine and the live viewer load in the tab. The only file you download is the finished STL, 3MF or sliced G-code.
Print it your way
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