Please forgive me if this topic has been answered many times before. I figured it would have been when the shift (pun intended ) came from 9 speed to ten speed. I tried searching but couldn't find the exact answer to my questions.
My situation:
two bikes:
1) dura-ace 10 speed (ultegra 10 cassette) - wipperman connex chain
2) full dura-ace 9 speed - 9 spd shimano chain? (came with the bike)
I have built a Powertap (PT) hub into bike #1 which I would like to be able to swap between both bikes. I can afford a 2nd bike harness for the PT but I can't afford a 2nd PT hub and I can't afford to upgrade the shifters and deraileurs on bike #2 to 10 speed. So my questions are...
a) can I just flip the wheel over without changing the cassette - in other words, what happens if I put a 10 spd cassette in with 9 spd deraileurs and shifters (can I use 9 of the 10 gears or are they completely incompatible)?
b) if that won't work, can I use the 9 spd cassette with the 10 spd shifters/deraileurs? I'd lose two gears but what happens if I shift too far into that 10th gear that isn't there?
c) is the 9 spd cassette even compatible with the free hub of the powertap wheel? I'd rather not have to switch the casette every time I swap the wheel between bikes but is that my only option? Is that even a viable option?
Any advice would be much appreciated!
Pad
My situation:
two bikes:
1) dura-ace 10 speed (ultegra 10 cassette) - wipperman connex chain
2) full dura-ace 9 speed - 9 spd shimano chain? (came with the bike)
I have built a Powertap (PT) hub into bike #1 which I would like to be able to swap between both bikes. I can afford a 2nd bike harness for the PT but I can't afford a 2nd PT hub and I can't afford to upgrade the shifters and deraileurs on bike #2 to 10 speed. So my questions are...
a) can I just flip the wheel over without changing the cassette - in other words, what happens if I put a 10 spd cassette in with 9 spd deraileurs and shifters (can I use 9 of the 10 gears or are they completely incompatible)?
b) if that won't work, can I use the 9 spd cassette with the 10 spd shifters/deraileurs? I'd lose two gears but what happens if I shift too far into that 10th gear that isn't there?
c) is the 9 spd cassette even compatible with the free hub of the powertap wheel? I'd rather not have to switch the casette every time I swap the wheel between bikes but is that my only option? Is that even a viable option?
Any advice would be much appreciated!
Pad