> BTW, why is frame size, as measured by seat-tube length, considered so important on road bikes? So
> long as the seat is in the right place, does it really matter that much exactly how high the
> top-tube is?
It matters because it gives you an idea of where the handlebar is going to be. There are only three
points of contact (hopefully!) on a bike. Seat, pedals and bars. It's all about defining that
geometry, and frame "height" help determine the front end. Curious that we measure the rear-center
of the bike to get an idea of the front height, isn't it?
--Mike-- Chain Reaction Bicycles
http://www.ChainReactionBicycles.com
"Bruce" <
[email protected]> wrote in message
news:[email protected]...
> Mike wrote:
> > With mountain bikes being sized different than road bikes, I am curious
as
> > to the approx. size to look for. I'm 6'0" with a 33" inseam.
>
> Try "large". Conventional frame size measurements dont make much sense on modern mountain bikes.
> Just be sure the seat goes high enough, and there is enough clearance between balls and top-tube,
> with feet on the ground. The more the better, when going off-road. Of course, its a compromise
> with strength and rigidity (which are traded against frame weight, ...)
>
> BTW, why is frame size, as measured by seat-tube length, considered so important on road bikes? So
> long as the seat is in the right place, does it really matter that much exactly how high the
> top-tube is?