Fox fork air spring "bullet" tool for compressing internal O-rings
cults3d
When performing air spring maintenance on a Fox fork, Fox specifies part number 398-00-657 Tooling: Bullet, Sealhead To Shaft, FLOAT NA 2 This tool can be really tough to find, even when you work for a bike retailer. So... 3D printing to the rescue. Fits 10mm shafts on air spring shafts to install the negative spring plate with new O-rings. After printing, sand the bullet surface to make installation a little easier. Also a quick coat of Slick Honey (or your preferred assembly grease) will help. Update 14 Jan 2020: Thanks to r5v who contacted me here and Brett Dean who contacted me via Facebook, I've now modeled the 8mm bullet tool, Fox part number 398-00-320. I don't have a fork to test this with, so I found a decent photo of the Fox tool online and used Fusion360 to get the key dimensions.
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