Originally Posted by
hybridbkrdr
Just out of curiosity, what kind of frameset, stem do you have? What is your height and inseam?
There is a sizing calculator at the Colorado Cyclist website. I think that you have a very laid back position which looks comfortable but might not be that fast. My impression though is that your knees seem to go high as you pedal. This would suggest a low seat. I got a trick in a bike shop once. One way to find out if your seat is up to high is when you have pain behind your knees.
The top tube is angled at a very sloping down position, so it gives the appearance my knee is
going to high, the stem is adjustably one from Shcwinn Trailways. I have tried about 3 online
fit calculators and they all come up with I need a large..I'm 5' 10 and 3/4" with standard
tennis shoes on inseam 31.5 with shoes...Now the frame on the Cannondale f4 measures out larger than the Trek,
and the Schwinn larger than the F4..Longer wheelbases, etc....the F4 is a medium, but
because the Headshok only comes in one size they just have to slope the top tube as it goes from XL to S, The Trailways has the same style tube slope. But the wheel base is the same as the F4 in L, ( basically ), the Trek much shorter than both..Now I am afraid of riding
the F4 that might cause me knee damage, but can get the exact same center of crank to top of seat position and adjusted correctly according to forward and aft position, and same handle bar reach..but the Trailways bars are 5 1/4" above the seat, and the F4 is even with the seat. After riding the F4 around 100 miles now I have noticed a little soreness on the back side of my arms, I'm sure that was due to the more aggressive riding style and little extra weight shifted to the arms....One has 700c wheels the other 26" and the only real
difference in frame is the F4 wheel base is 42. something inches, and Traiways is a little more than 43, The Trek 19/48cm large wheel base is only 40 1/4 inches...700c weels also,
Here is the best example I can give you...It is driving me CRAZY ! I think the F4 looks small
to, but that could have to do with the wheel size, and in this video I had the seat to far forward...
I
They both seem to fit well
the Trailways is like riding the couch it is so comfortable
and the F4 just feels more
aggressive but with the same fit..I NEED ADVICE PLEASE !
Thanks Richard