Bicycle Eyelet Stub for Light/Accessory Mount

thingiverse

Some bike forks/racks have an M5 threaded eyelet available for various purposes. One popular use for these is to mount a light or accessory, especially if you need it to be forward of cargo. These simple cylinders are usually sold separately. Examples include the Origin8 Eyelet Stub and the Gino light mount. I wanted something cheaper, shorter, and with edges that would prevent the light from falling off. Standard 26mm clamp diameter. 20mm of space to clamp your stuff (40mm for the extra long version). The actual clamping surface is recessed so that the raised edges keep the light from being pulled off the sides. Overall the part is about 34mm long, the clamping surface starts about 10mm from the surface you attach to. For attaching it, you will need an M5 bolt and a washer, which are inserted through the large hole end. I found a 20mm long M5 bolt (.8 pitch) and a 15mm M5 fender washer to work perfectly, allowing about 8mm of thread to go into the eyelet on the basket. Pictures are included for detail; I paid about a dollar for the nice stuff. Of course, this assumes you are attaching this to a standard M5 eyelet - but if you aren't, this part probably isn't going to work. I use this on my Portland Design Works Takeout Basket. I think it turned out perfectly; it's the right offset, the conical part matches up perfectly to the eyelet on the frame, and my brifters do not come near the light. I included an "extra long" version if you want more offset or want to clamp wider accessories, but have not tried it.