Unde Desk Excercise Bike Riser Feet

This is a quick design, which I made for a relative who is in a wheelchair and has a small under desk “pedal excerciser”, which I believe is a “LUBBYGIM Mini Exercise Bike on Amazon”.  This bike has a feature where it will pedal for you, so it helps a bit with getting joints moving, even when muscles are not there yet.  The problem was that it was too low and slipped around on the tile where it was being used.  

To address the issues, I designed these riser feet, so the bike is raised a bit and tilted, which was intended to make it easier for my relative to use from a wheelchair.  I don't expect that this will be a very popular model, but I hope for those who do need something like this, it will be useful.  Of course this comes with no guarantees, and if you use or make this, it is at your own risk.  

The feet are designed to be fit over the tubular feet “platform” of the bike, which had an approx 38.5mm diameter.  The feet will clamp down a bit if it is a bit smaller (or a bit larger) though.  

The feet require the following hardware (for each foot):

• Qty 3 M3x30mm SHCS
• Qty 3 M3 Locknuts

Additionally, I included a small remote holder, which uses a 3M command strip to mount to the wall.

When assembling, note that the locknuts need to go in so they will clamp the insert when the screws are tightened.  If you get it wrong, I added a small 4mm hole which you can use to poke the insert back out to try again.  Be careful not to overtighten the M3 screws, since they could crack or the Locknuts may spin out (and then it could be stuck).  They really don't need to be super tight to hold on well.  There is a hole in the top of each foot, which I had planned to use to drill through and install a self tapping screw for extra security, but I don't think it will bne needed (it is there however).

I printed the feet in PETG, which is probably the best choice, since it has a bit of flex, though other materials will probably work.  

Unless using the bike on carpet, I'd recommend adding some nonslip rubber pads to them.  I used some  5mm EVA foam pads with 3M adheasive backing to keep the bike from slipping on tile (where it will probably be used most).

If you find these models useful, please post a like or a comment with some pics of your prints. 

You can find the other things I'm working on at my blog here.  You can also follow me here on MakerWorld, to see what new stuff I post.  If you would like to support my work, you can Buy Me A Coffee using this link:

https://www.buymeacoffee.com/mystoopidstuff

Thanks for looking!

Changelog:

1/28/2026:  Uploaded design.