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...but a really zippy version
The frame is going to make practically no difference. 90% of your zip once you've committed to a particular conceit on the fit geometry is down to tyre choice.
gbj_tester-
Ok I take your point about tyres. I'll choose some zippy ones. But I think that's maybe 50% of the zip. Low rotational mass (nice rims) and effective brakes are gonna add significant zip.
What do you mean by particular conceit on the fit geometry?
Edit: Did you mean concept?I suspect I'd need a longer TT than on my road bike. Should I maybe look at MTB frames?
Ndeipi
I am trying to select a frame to build a lightweight town bike. Upright riding position.
Something that rides and looks like this:
....but a really zippy version. So decent tubing, light wheels, excellent brakes.
Would a lightweight cyclocross frame be a bad start? Wrong angles maybe?
Also if I take a 58cm TT on a race bike, what TT do I need on a town bike with swept-back bars?