Originally Posted by mookymoo
Is it possible it's just a matter of wind resistance? The 950A is a bit of a barn aerodynamically.
IIRC the highest speed I've heard of for the Adv was 130mph-ish - which is only a touch above 200kmh. (and that was no wind, on a salt flat, no screen and no seat so the rider could get lower...)
Wind resistance is a function of the square of velocity (if my memory of physics serves me...)
The aerodynamics are always my excuse for why the back tire just spins up(on dirt) and the bike doesn't gain KPH on the speedo, above the "terminal velocity" of our coefficient of drag.
edit to add:
I have seen +/-113mph on the GPS with 16/45 gears, on a 17" rear. Keep in mind that was paved and I have never been able to get above +/-105mph on the dirt, same setup. My GPS crapped out and I haven't been able to GPS 17/45 or 16/42, just speedo'd and that # is questionable...