TT/Tri question

It is generally considered normal practise to prefer a smaller size than a larger one. Particularly for a TT bike where comfort is not really a huge issue. A longer stem will have you streched out and have more predicatble docile handling.

I had a similar dilemma when choosing my Felt, 50 or 53.

I agree with the above suggestion, it is what is normally recomended, however, I went the other way.

A larger frame and a zero offset seat post gave me a 76 degree effective seat post angle and an effective top tube length within 5mm of the computer recomemdation.

With the taller steering tube of the 53cm it rides much higher than a lower one would. I have left the 100mm stem as is.

Give it a thought, it may not work for everyone...

cheers
George

Quoted post said:

Originally posted by bodhizafa
Hey all,

I'm thinking about buying a Cervelo P2k. But I seem to be between the 52 and 55 sizes. Would it be better to ride a 52 with a longer stem or a 55 with a shorter stem?

Bodhi

Can't determine from here. If possible, go into a good tri shop that carries the bike and get fit.

Getting a bike with a good fit is important enough to me that I'd be looking at frames from other manufacturers until I found one that fit me perfectly. Especially for the kind of money you are spending.

Quoted post said:

Originally posted by gclark8

A larger frame and a zero offset seat post gave me a 76 degree effective seat post angle and an effective top tube length within 5mm of the computer recomemdation.

cheers
George

Frame size has nothing to do with seat angle -- it could be a 42cm or 62cm and all it does is move the top tube higher up. Of course, some builders make steeper tubes on smaller frames.

Anyway, get fitted. Too small usually means WAY too low up front, especially with a P2K's aggressive low front end. I see TT bikes (usually tri bikes) that are too small all the time... the giveaway is the 3cm stack of spacers beneath the stem, the up-sloping stem, and spacers under the aero bars.