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Bicycle rear rack dropout adapter

by technophobe, published

Bicycle rear rack dropout adapter by technophobe Nov 26, 2012
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Thing Info

3314Views 210Downloads Found in Sport & Outdoors

Summary

I wanted to mount a rear rack on my bicycle, which did does not have eyelets on the dropouts nor is the frame appropriate for p-clamps (it's a bamboo frame).

Folks at the local shop had an idea to use a special nut designed to add a derailleur to old horizontal dropouts as an attachment point. However, this made the rack a bit closer to the rear wheel than I'd prefer—it prevented adding a rear fender.

These adapters attach to the rack and provide a bolt hole for the dropout mount. They seem sturdy enough for now, but I'm only commuting with a light load, and have only been using them in moderate temperatures for a short time. I'm planning on refining the design and eventually having a similar shape fabricated from steel, likely slightly thinner.

These are designed for a Bontrager Backrack Lightweight and the dropouts on a Bamboo Bicycle Studio frame.

(TODO: add images of the nut used and a photo of the rack mounted).

Instructions

Printed at 95% infill with 6 shells. YMMV.

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Tip Designer Report Thing

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3314Views 210Downloads Found in Sport & Outdoors

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