So this has been bugging me for a while..the 8 speed EX1 uses 10 speed dimension chain and presumably the same spacings between cassette sprockets.
I got a lad at work to bring in an old 10 speed cassette- my reckoning was if the indexing was the same I should get the 8 highest(smallest) gears and not gears 1,2 (lowest/biggest).
Well.... gears 10, 9, 8, 7, 6, 5, 4 went smooth but the expected change from 4>3 put it on 2...I went up and down the cassette and still the same and there's no meshing or signs it's out laterally on any of the gears?! (I really can't figure this one out- is the indexing a miniscule different from 10 speed and by the time I'm 8 up the block it jumps 2? Surely I'd hear it progressively getting noisier?)
I'd emailed SRAM and they'd said there was "absolutely no compatability between EX1 and 10 speed"- which I see in essence is true if one click jumps two cogs- but they can and do seem to run fine together if that minor issue doesn't bother you??...
My reckoning is that I could run the second set of wheels with semi slick (Schwalbe Hurricanes 27.5" x 2.0"??) with a SRAM PG1050 cassette: 11-36 so it stays steel.
Without splitting the block it would leave the gears below in black/blue... In EX1 that 32T is gear 3 and that's low enough for the road easily....
PG1050 11-36= 11-13-15-17-19-22-25(-28)-32(-36)
XG899 11–48= (11, 13, 15, 18, 24, 32, 40, 48)
It seems a much cheaper solution than a shonky second hand EX1 which would have nowhere near as close ratios for the road?? And 40/48 on the EX1 are really low only fit for serious hills off road....
Any thoughts? Anything I could have really overlooked??
I got a lad at work to bring in an old 10 speed cassette- my reckoning was if the indexing was the same I should get the 8 highest(smallest) gears and not gears 1,2 (lowest/biggest).
Well.... gears 10, 9, 8, 7, 6, 5, 4 went smooth but the expected change from 4>3 put it on 2...I went up and down the cassette and still the same and there's no meshing or signs it's out laterally on any of the gears?! (I really can't figure this one out- is the indexing a miniscule different from 10 speed and by the time I'm 8 up the block it jumps 2? Surely I'd hear it progressively getting noisier?)
I'd emailed SRAM and they'd said there was "absolutely no compatability between EX1 and 10 speed"- which I see in essence is true if one click jumps two cogs- but they can and do seem to run fine together if that minor issue doesn't bother you??...
My reckoning is that I could run the second set of wheels with semi slick (Schwalbe Hurricanes 27.5" x 2.0"??) with a SRAM PG1050 cassette: 11-36 so it stays steel.
Without splitting the block it would leave the gears below in black/blue... In EX1 that 32T is gear 3 and that's low enough for the road easily....
PG1050 11-36= 11-13-15-17-19-22-25(-28)-32(-36)
XG899 11–48= (11, 13, 15, 18, 24, 32, 40, 48)
It seems a much cheaper solution than a shonky second hand EX1 which would have nowhere near as close ratios for the road?? And 40/48 on the EX1 are really low only fit for serious hills off road....
Any thoughts? Anything I could have really overlooked??
