The difference between 150 mm and 127 mm is only really fine tuning.
It'd make a notional difference of around 15%.
I think Aspenmike rides his Coker further and faster than I'd ever dream
of doing, and he uses massive 170 mm cranks! Cranks aren't everything,
but they do make a difference to smoothness, speed and comfort.
Generally, big wheels are faster over a distance. I did a lot of
experimenting a a couple of years ago. I tried everything from 89mm
cranks to 170s, and 20 inch wheels to 36. (Although not every possible
combination!:eek: ) All other things being equal (tyre section, seat,
skill level etc.) a big wheel will be faster than a smaller wheel with
proportionate cranks.
On a smooth surface with few hills, nothing is as smooth and precise as
a 28 (not 29) on 110mm cranks. I commend this to the House as the most
elegant machine you can possibly ride.
For big distance, a Coker on 150s seems good. I commend this to the
house as the best distance muncher of all.
On the road, a 24 with 110s, or even 102s will shift surprisingly
briskly. I've done a few 20 mile plus rides on a 24 with this sort of
set up. I commend this to the House as a really silly idea that's great
fun.
A 24 can be ridden of road on 89mm cranks - be it ever so briefly. I
commend this to the House as something to try once in your life.
--
Mikefule - Roland Hope School of Unicycling
Everyone should be fatuous for 15 minutes.
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