Rear axle dropout spacer for Surly Wednesday

Rear axle dropout spacer, which allows to run 26x4.6" or 29x3.0" tires on Surly Wednesday. Alternative to Monkey Nuts.
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updated September 5, 2022

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If you want to run tires with larger diameter than stock 26x3.6” on Surly Wednesday, you need to shift the rear axle a bit backwards in the rear dropout, to gain extra clearance for larger tires. 

You have three options:

  1. Move the axle back in the dropout and tighten extra hard. In my case, the axle usually slips forward when pedaling harder = not usable. 
  2. Buy Surly Monkey Nuts. One piece on the drive side should suffice, but a pair is better. Quite costly, but surly safest bet. 
  3. Print a pair of these spacers. I’ve been running them year long on 29x3.0” and 26x4.6”. Both summer and winter. No troubles yet. 

Printed from Prusament PETG, 40 % infill, 2 perimeters, 4 bottom & 5 top players, 0.16 mm layer height  

 

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