Xavier wrote:
MTM wrote:
Xavier wrote:
That's the thicker 25-28 Vittoria inner tube, I wonder if that's why it's coming out slower and not what MTM found if he used a 19-23 tube?I actually also used the 25-28mm Vittoria tube in my testing - albeit the old one with brass valve as the new one with aluminum valve wasn't out at the time. IIRC the new one has some graphene in it (like Silca's - which I think Josh said should make it ever so slightly faster, but who knows).
I actually tested the thicker/larger Vittoria tube as it seems more sturdy as rruff mentions, so it was to see if there was any drawback to running that vs. the very thin Vredestein. At least with regards to installation and general handling it seems more sturdy with the thicker and larger tube. My totally anecdoctal evidence suggest the Vittoria 25-28mm tubes are holding up fine against sharp objects penetrating the tyre - I had several sharp flints penetrate my tyre during last winter with none of them puncturing the tube. But the thin Vredestein might have held up fine as well?
Also, I've been wondering whether a stretched thin tube has more or less hystersis than a thicker less stretched tube. Maybe if Vredestein made a 25-28mm tube that would be the best?
If I get the chance to test different size latex inners I'll give it a go. Just got a RevoLoop inner tube which is really light, supposedly the same speed as latex etc. so that'll be interesting to test.
The would be interesting. Guess the Vittoria 19-24 mm (I think that's the size of the smaller one) vs. 25-28 mm would be the obvious comparison - less material vs. less stretch.
I don't hold much faith in those plasticky tubes. Seems like an awful material if you don't want hysteresis.