Quote:
Originally Posted by bobdbilder
If you ever tried cycling and moved from Aluminium Mountain Bikes to Aluminium Road Bikes, you would feel a very big difference in terms of distance and speed that you could generate.
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Except that weight is actually a minor part of that comparison. I've got a MTB that's as light as a low end road bike and it's very near as fast. Most of the difference in road vs MTB down to riding position (aero - but also power generated), gearing (taller gears on the road bike), and the narrow high pressure tyres. My brother has an MTB on high pressure road tyres and although it's a bit on the heavy side, with aerobars it's really fast, but not as fast as my 7kg aero framed carbon bike
The time weight most makes itself felt is climbing hills, which is where ICE vehicles and human powered differ. More weight in a car means you'll be running closer to BSFC, while humans don't like 80% load very much
