Thread: Birdy thread
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Old 05-16-23 | 07:53 PM
  #2361  
2_i
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Bikes: Trek 730 (quad), 720 & 830, Bike Friday NWT, Brompton M36R & M6R, Dahon HAT060 & HT060, ...

Originally Posted by Geoffroy2020
Basically the rack has two 4mm diameter to threads, one on either side. I cannot find M4 wheels...
Stainless steel tubes 6mm OD and 4mm ID are common. Basically you cut a piece and make sleeve around M4 bolt for the 6mm wheel to sit on. However the situation is going to be precarious as it may be too easy to bend an M4 bolt under the weight of the bike.

Last edited by 2_i; 05-16-23 at 08:00 PM.
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