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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-
What do you mean by particular conceit on the fit geometry?
You're choosing to place your hands, feet and arse in a particular arrangement for style reasons (or, if we're being generous, for a particular combination of ride and handling). If you don't change that, then there's very little difference that the practical differences between frames the right size will make, whether it's ±1" on the front and rear centre distances or ±1lb on the weight. That's not a particular point about this project, it applies just as much to any other kind of bike until you get into high performance riding.
suspect I'd need a longer TT
Not so much. Raising your torso angle cuts a lot out of your reach, making a short stem and swept back bars come to your hands with much the same squarish geometry as works for normally proportioned people on a road bike.
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Did you mean concept?
No 🙂
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New or used frame? If you’re in UK there should be loads of decent 2nd hand tourers et cetera available.
gbj_tester
withered_preacher
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.