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Thighs 'sore' after rides....

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Thighs 'sore' after rides....

Old 03-22-09, 09:39 PM
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Thighs 'sore' after rides....

hi, I just switched over to a larger frame (53.5cm to 55.5cm c-c, traditional straight top tube) and still trying to get the fit right. Well my apologies, I was dumb enough not to record down my previous ride setup (and I've basically stripped everything to build this new one). I'm 5' 11" with inseam of 88cm.

I've not felt as comfortable as before. Feeling that I'm using too much of my quads and getting a bit sore on the upper part of the knee (I sprained the same area before last year). In my previous ride, I had 17cm of post out of the tube. Right now, I have about 15cm on the 55.5cm frame (which adds up to the same crank to saddle height! 15 + 55.5 = 17 + 53.5) but I feel like my thighs are getting more workout that it should...

I switched from 170mm to 172.5mm cranks though, but it shouldn't make a difference (right?).

Should I play with KOPs? I did a quick one suspending a piece of weight from the bottom of kneecap and it appears that I am about 1cm behind the pedal axle.

Appreciate any advice!! thanks!
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Old 03-22-09, 11:51 PM
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You should get a fitting.
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Old 03-23-09, 12:05 AM
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Take some time to get used to it. If there is still a problem, I would get a fitting.

Just FYI, KOPS doesn't work for me or some of the riders I know. In fact, it is way off for me and throws my ankles off of the perfect pedal stroke.

Also, every little bit makes a difference in that will usually be noticeable, at least for me, towards the end of a long ride.
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Old 03-23-09, 10:43 AM
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How long ago did you ride your old bike? A lot of time it just takes some time to adjust. Is the top-tube length, and all other major lengths the same when you account for stem etc?
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Old 03-23-09, 10:47 AM
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Originally Posted by boostbutt
I switched from 170mm to 172.5mm cranks though, but it shouldn't make a difference (right?).
wrong.

you're 5'11" and were riding a 53.5 cm frame? that's crazy! i'm also 5'11" (with long legs and a short torso) and my frames all have a 55.5 or 56 cm top tube
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