|
The mtn bike world has been making "compact frames" since the 80's. The main advantage there is increased standover clearance. That is a very real advantage for technical terrain. The other claimed benefits (from the road community) is a stiffer front and rear triangle (shorter tubes) giving better acceleration. The longer seatpost can give some extra compliance over bumps, but you also have to have a more robust post lest you snap it.
Beyond that, there shouldn't be a difference (assuming the other geometry measurements stay the same). In the end for the road I think it comes down to looks and maybe a few ounces.
|