On Tuesday, August 7, 2012 3:53:49 PM UTC-4, Jan Heine wrote:
>
> ...it's hard to conclude much from that beyond that hand-made cotton 
> casings are super- 
> fast. (Pro racers have known that for a long time, almost all of them 
> race on hand-made tires with cotton or silk casings.) 
>
> Would a hand-made clincher with cotton casing in a 34 mm width be 
> faster yet? We are working on that... 
>

ah, that's right.  i knew it was a skinny - the Challenge Tri, right?  
isn't it very possible that fast tires are more about tire casings than it 
is tire width?  GB and Challenge tires have superior casings as far as 
performance goes - it's not surprising that even the wider models of these 
brands perform well in comparison to skinny tires with crap casings.  other 
wide tires certainly do not far as well.

why not do a test with a tire that comes in a range from 25-37mm (Pasela, 
maybe?) and see what comes out ahead - that would taking the casing 
variable out of it.  

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