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Frame Fit.(9 posts)

Frame Fit.MichaelM
Aug 15, 2003 1:24 PM
So I'm probably missing something, but:

Why is the size/fit of the frame so important ? assuming it's not way way too large.

If it's a small frame why can't you get by with a longer seatpost and put on a longer stem? Surely,it's effectively the same as a larger frame with shorter stem and seatpost.

What am I missing?

re: Frame Fit.Chen2
Aug 15, 2003 2:32 PM
First thing that comes to mind is the drop from top of saddle to top of handlebar and/or how many spacers you may need between the stem and headset. My 56cm OCLV Trek is the correct size for me but I have a 3" saddle to bar drop, even with the 25mm of spacers and the 90mm 15 degree stem flipped over.
That's a lot of drop for my 60 year old 5'8" body, at least on long rides. If I had a smaller Trek I could never live with the drop. If I had a larger Trek I would be way too streched out and the standover whould be making me nervous.
re: Frame Fit.jtolleson
Aug 15, 2003 4:41 PM
When you get your weight out on that long stem you'll have more weight on your hands than you should (possibly) and the 14 stem or so will slow your steering, in addition to the saddle-to-bar drop mentioned above.
re: Frame Fit.Rusty Coggs
Aug 15, 2003 6:09 PM
For some,it's exact size down to the mm or nothing. Others can handle a range from a bit small to a bit big. It's trying to accomodate the extremes where it can go in the toilet.
re: Frame Fit.MichaelM
Aug 15, 2003 11:19 PM
Thanks, though it seems the only real reason not use a stem to make up for small frame is that it will slow the steering.

And the fact that a long hi-rise stem will look a bit stupid.

And I don't want to look stupid!

Crappy handling!the bull
Aug 17, 2003 12:57 PM
Lets say your riding your bike and you got your 230 stem going on.Picture all the weight of you body OVER the front wheel.Not as safe as being more toward the rear of the bike is it?
Aug 16, 2003 9:00 AM
If you ever do rides over 25 miles you only have a little bit of adjustment to get your knee over the pedal without causing back or knee problems.
I don't get itfiltersweep
Aug 16, 2003 12:49 PM
I'd think a recumbent would debunk any need for KOP (I still spell knee with a K, but I'm a bit old school). Contrast a bent with a tri setup where the seat tube approaches vertical...
I don't get rekubents either ;)LC
Aug 16, 2003 3:49 PM
Tri setup keeps the same relationship of 90 deg angle between legs and back, it is just tilted forward. It is not that you can not pedal a bike at other angles, but it is ineffiecient and can cause injury if you have not slowly built up to it.