's Forum Archives - General

Archive Home >> General(1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 )

Oh oh, not again!!!!(9 posts)

Oh oh, not again!!!!Woof the dog
Jan 26, 2002 2:18 AM
Hahaha, now they really take it apart!!! And they actually make sense, so much for wider is faster.

I always thought narrower tires are better, except for crits of course. Now I actually can back this up. And please, forget all this bullshit about comfort and max. cornering contact patch, for that you do want 23c i agree. Thank God for smart people.

Woof, the "in your face" dog.
Dear In-Your-FaceJon Billheimer
Jan 26, 2002 6:46 AM
Thanks for the link. Right on. If anyone would bother checking out John Cobb's data, they would come to the same conclusion.
Formulaic proofElefantino
Jan 26, 2002 10:24 AM

Thanks for the interesting link to that thread. One of the responses contained the following formula — [D=Cd*r*(v/2)*(v/2)*A] — which, I believe, if I remember my algebra/trigonometry correctly, proves conclusively. that it was Lee Harvey Oswald, acting alone, who killed JFK.

I think.

RE: Formulaic proofmr tornado head
Jan 26, 2002 8:30 PM
Yes, you finally nailed it. It was me that took the Lindberg baby from the grassy knoll.
re: Oh oh, not again!!!!JimP
Jan 26, 2002 3:04 PM
Guess my 19mm Conti Comp GP on the 18mm Nimble Crosswind on the front is ok after all. I was afraid that I was going to have to go back to the old 26 x 2.25 tire like the old days to get my speed back.
re: Oh oh, not again!!!!merckx56
Jan 26, 2002 4:29 PM
that's all fine and well, but dive a 20c tire w/120 pounds in it, into a corner at 30 mph in a crit. odds are, you won't like what happens! a 20 c tire, when new, is probably faster, in a straight line, than a 23. a worn 20, however, tends to be very "square" across the top, thus increasing the contact patch with the road. we did the experiment with paint across a piece of plywood. the 20 and 23 were virtually the same when new, but the 23 had the narrower contact patch after 500 miles of riding. same tire, same rider, just different sizes of tires (gp3000).
re: Oh oh, not again!!!!Woof the dog
Jan 26, 2002 8:06 PM
hmmm, i am wondering why you said 120#? Why, would heavier be better in that case? Its the same kind of question as: if you were able to make extremely light wheels, say at 700 grams front and rear (i doubt anyone would wanna do it), would they support your weight in corner?

What do you think?

Woof the dog.
re: Oh oh, not again!!!!merckx56
Jan 27, 2002 2:31 PM
I was talking about air pressure, not rider weight. i did the test personally and i weigh @ 180. 20's are not as supple as 23's or a corsa cx tub @21.5c or a sprinter 250 @ 22c. there's just not as much give in a corner with a 18c or a 20c tire, regardless of the straight line/aero benefit.
blah blah blahgtx
Jan 26, 2002 4:50 PM
race on tubulars (Corsa CXs, for example, are 21.5) and train on clinchers--25s last longer, are more comfy and get fewer flats.