patches Posted March 22, 2011 Posted March 22, 2011 ok, granted I measured this on a downhill (not a very steep one though. Main rd, Bryanston from Engen down towards Bryanston drive). With my 36T - 11T combo, I just cant get over 60kph. 59.7 is the fastest
Thug Posted March 22, 2011 Posted March 22, 2011 I made the mistake a couple of weeks ago of riding my SS (32x18) with our road group on a Friday morning. At times l thought that my legs were about to unscrew themselves from my hips. Will definitely need to put a 16 on the back next time.
divernick Posted March 28, 2011 Posted March 28, 2011 (edited) I do 28km/h on my 38x20 riding at a fast but reasonably comfortable cadence - this is as fast as I can comfortably pedal without bobbing off the bike.... Rabbit says this is a cadence of 120 rpm.... Edited March 28, 2011 by divernick
nuge Posted March 31, 2011 Posted March 31, 2011 wouldn't know, in true ss style i have no onboard computer-aided riding devices! from the sound of the wind as it rushes past my ears i'm pretty sure i'm doing about 40kph when my knees feel like they're about to fly apart - i have a 39x15 on my roadie ss (an old cannondale 2.8 - i have a really comfy saddle btw!)
eggsovereasywithteandtoast Posted March 31, 2011 Posted March 31, 2011 53-11 I spin out at just over 70km/h. Doing about 120RPM but bouncing a bit too much.
RodTi Posted March 31, 2011 Author Posted March 31, 2011 Oh my shattered nerves.... what handlebar is that?
DownhillDanny Posted March 31, 2011 Posted March 31, 2011 On my 29'er SS with 32x16 gearing I can get up to max 47km/hr & 170rpm for very short bursts on flat road, 35km/hr @ 120rpm quite doable for a few minutes at a time
Dicky DQ Posted March 31, 2011 Posted March 31, 2011 Speed is not the issue it is the RPM I get to about 130RPM
Dicky DQ Posted March 31, 2011 Posted March 31, 2011 (edited) 53-11 I spin out at just over 70km/h. Doing about 120RPM but bouncing a bit too much. You should be fine at 120RPM, but even then it seems you were not be using 53/11. The last time we went bulletting down a mine shaft we were all doing about 95 - 100km/h that should mean we were doing about 165rpm and the poor sods with 53/12's must have been really spinning. Edited March 31, 2011 by Dick
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