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04-18-24 | 05:21 PM

#46

Need41speed

BeastMaster

Joined: Sep 2023

Posts: 135

Likes: 123

From: Honolulu, Hawaii

Bikes: Dahon Mu (mod), Retrospec Speck (mod), EPX fixie, Pinarello F7

Quote:

Originally Posted by Ron Damon

CST also offers long pipe 451 presta tubes.

Quote:

Originally Posted by Need41speed

I use Continental compact 20 slim tubes w/ 42mm valve stems. I prefer that tube for both this project & my other folder. I used 30mm valve extensions also fm Continental to provide access with a 40mm rim depth.

Had issues with the 30mm valve extensions. When assembled, the bore of the extension tube restricted movement of the presta core, preventing air to flow into the tube. P lan B is to Google a suitable tube with a presta stem greater than 50-55mm. There were no 406 butyl tubes with longer stems but found these TPU tubes (1st exposure to TPU). So, a fix for a workable stem, lighter weight & more space in my flat kit, a win win win!

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