threebikesmcginty
Corn Fed Hick...
- Location
- ...on the slake
I did try tacking this onto an older thread but no-one has taken pity on me so I'm now appealing directly on this thread...
Right, object of exercise is to see if my back-of-fag-packet-scribblings are anywhere near the mark, bare with me I've never bothered with anything bike related in this sort of detail before.
Current road bike gears are 50/34 compact with 12/27 cassette. On 24mm tyres I make this a range of 30.22 to 100"
I quite fancy trying an Alfine 8 hub with 32mm tyres, putting this through the 'Sheldon Gear Calculator' using 170mm cranks 20t rear and 42t front it comes up with a range of 29.9 - 91.6".
So it seems the same at the low end and not far off the top end although it loses the 12t and works out about right to the 13t (which is 92.31"). One cog off the high gear seems ok to me, that's if my calculations are correct - it could all be bollocks mind!
Can anyone mark me please?
Be ever so grateful
Right, object of exercise is to see if my back-of-fag-packet-scribblings are anywhere near the mark, bare with me I've never bothered with anything bike related in this sort of detail before.
Current road bike gears are 50/34 compact with 12/27 cassette. On 24mm tyres I make this a range of 30.22 to 100"
I quite fancy trying an Alfine 8 hub with 32mm tyres, putting this through the 'Sheldon Gear Calculator' using 170mm cranks 20t rear and 42t front it comes up with a range of 29.9 - 91.6".
So it seems the same at the low end and not far off the top end although it loses the 12t and works out about right to the 13t (which is 92.31"). One cog off the high gear seems ok to me, that's if my calculations are correct - it could all be bollocks mind!
Can anyone mark me please?
Be ever so grateful