Crr Difference between Conti Race Light and Latex Tube?

Triathlon Forum
1

Does anybody have these numbers handy? Nominal rolling resistance difference between Continental Race Light and Latex tube?

Thanks

2

Does anybody have these numbers handy? Nominal rolling resistance difference between Continental Race Light and Latex tube?

Thanks

iirc, the continental race light aren’t really that much different than a normal tube, I think you can expect the usual difference.

there are some super light butyl tubes that get close, but they are very very delicate.

some numbers from tour magazine:

CRR (Speed 30km/h, the lower the No. the less W is to be used to overcome the CRR of tube & tire)
Latex 80g (Michelin) 23.9W
PUR 60g (Panaracer) 25.1W
Butyl 50g (Conti Supersonic) 25.9W
Butyl 75g (Hutchinson) 28.8W
Butyl 104g (Schwalbe) 32.1W

3

Interesting to note that the polyurethane tube occupies a sort of middle ground. Curious that there isn’t more on PUR tubes. Are they really a happy compromise? Or the worst of all worlds? I don’t know anyone that runs them, mostly because they are hard to find, but still…

4

Best place to look → http://www.biketechreview.com/tires_old/images/AFM_tire_testing_rev9.pdf
.

5

Interesting to note that the polyurethane tube occupies a sort of middle ground. Curious that there isn’t more on PUR tubes. Are they really a happy compromise? Or the worst of all worlds? I don’t know anyone that runs them, mostly because they are hard to find, but still…

I think there is a good amount of discussion on biketechreview about them if you dig over there. I don’t recall anything bad being said about them. Can’t remember if they hold air longer or not.