time trial measurements for 55cm bike
- From: vyaw2003@xxxxxxxxx
- Date: Tue, 30 Oct 2007 22:07:05 -0700
I have a Giant ocr1 55.5cm mens bike.
I here that the frame is a day riders frame, not for racing and not
much aerodynamics, and geomeraty is setup for old grandmas. I my
pursuit to go faster i would like a better frame, a time trial frame.
The frame i want to get assuming it is geomeraraly sound is either
avaliabe in 54 cm or 57cm. That is my first problem. I am just over
6 foot.
57cm bike has a front fork wheel angle of 74 deg, and seatpost to back
wheel angle of 72.5 deg.
Is that good? and is that the main thing i should be looking at?
bottom bracket is 68 lower than the wheel axels.
top bar is 600.
or should i be trying to squeeze onto a 54cm? Originally the bike
shop said i need a 55cm bike.
If i went the smaller one, it would be lighter. but the bigger one
would be 30cm longer on the top bar, meaning i would be leaning down
more to get to the handle bars.
any help would be apprecieated.
.
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