I've got a pugsly setup as tubeless, running endomorph tires, typically I run between 8 and 12 PSI in the tires depending on the conditions.
Is there a significant difference between performance of presta vs schrader valves at these low pressures?
Add a comment
|
3 Answers
As far as I'm aware, at these pressures, there'll be no difference in performance.
A bigger issue might be the rim. The value hole will be either Shrader or Presta sized and will either not fit a Shrader or be hard work to seal with a Presta.
-
If the hole is too small for schraeder, it's easy enough to drill it out larger and both can be found with removable cores for adding sealant.– BenzoApr 10, 2013 at 16:13
As far as for the tubes I have used, schrader valves offer a less restrictive air passage, that is they create less resistance (less pressure) on the pump side. That means that for a large volume tire, to be used at low pressure, almost any pump or even a low powered compressor will be a little bit faster. For that reason in particular, I use schreaders in my DH bike (2.5 tires) and prestas in my XC bikes (2.3, 2.1 and even 1.8). I once used presta on my DH, but it took forever to inflate with a hand pump.
The biggest difference will be that schrader valves are more susceptible to dirt and debris. You don't need to leave a plastic cap on the presta valve, but you will definitely want to keep the plastic cap on a schrader. Since this is a fat bike, you're hopefully riding through some dirt and mud, so I'd go with the presta myself.
