Hi I've been upgrading various components on my old 21 speed Orange C16 and found it virtually impossible to source drive train equipment for a 7 speed cog. The 8 and 9 cog shimano XT rear mechs work OK but the front mechs just don't set up very well with the old wider IG chains. I'm coming to the conclusion that with the money I've invested so far, I may as well change the gear shifts, etc, to an 8 speed rig. My question is this|:
Given the thinner cogs used in 8 and 9 speed cassetes, is it possible to fit an 8 speed cassette on a 7 speed cassette hub? My rear wheel hub is an Alivio 7 speed casette model. Thanks, Regards, Dennis
Given the thinner cogs used in 8 and 9 speed cassetes, is it possible to fit an 8 speed cassette on a 7 speed cassette hub? My rear wheel hub is an Alivio 7 speed casette model. Thanks, Regards, Denni
AFAIK, no, but you can run 8 9-speed cogs on it. See:
Hi I've been upgrading various components on my old 21 speed Orange C16 and found it virtually impossible to source drive train equipment for a 7 speed cog. The 8 and 9 cog shimano XT rear mechs work OK but the front mechs just don't set up very well with the old wider IG chains. I'm coming to the conclusion that with the money I've invested so far, I may as well change the gear shifts, etc, to an 8 speed rig. My question is this|:
Is there any reason why you can't run a narrower chain with your existing chainrings and cassettes? That would allow you to upgrade your derailers while sticking with 7 speed.
Quoted message said:
Given the thinner cogs used in 8 and 9 speed cassetes, is it possible to fit an 8 speed cassette on a 7 speed cassette hub? My rear wheel hub is an Alivio 7 speed casette model. Thanks,
Other than by using the 8-of-9 trick mentioned by another poster, no. If you do decide to replace your freehub body or your entire rear wheel, I'd suggest going to 9 speed instead of 8. 9 speed drivetrains have been mainstream for a while now, and the available 8 speed shifters are mostly low-end. It looks like 8 speed XT shifters are still available for the moment, but current production is Alivio and below.
If you're on a tight budget or just dont want to mess with your rear wheel, the 8-of-9 trick sounds like a good bet. You'll be able to switch to full 9 speed later without throwing any of your new parts away.
Hi I've been upgrading various components on my old 21 speed Orange C16 and found it virtually impossible to source drive train equipment for a 7 speed cog. The 8 and 9 cog shimano XT rear mechs work OK but the front mechs just don't set up very well with the old wider IG chains. I'm coming to the conclusion that with the money I've invested so far, I may as well change the gear shifts, etc, to an 8 speed rig. My question is this|:
Given the thinner cogs used in 8 and 9 speed cassetes, is it possible to fit an 8 speed cassette on a 7 speed cassette hub? My rear wheel hub is an Alivio 7 speed casette model. Thanks, Regards, Dennis
8s and 7s had cogs of the same thickness and chains of the same thickness...if it works for 8s, it will work for 7s. Get a Sram '8s' chain and adjust the FD and go ride.
Hi I've been upgrading various components on my old 21 speed Orange C16 and found it virtually impossible to source drive train equipment for a 7 speed cog. The 8 and 9 cog shimano XT rear mechs work OK but the front mechs just don't set up very well with the old wider IG chains. I'm coming to the conclusion that with the money I've invested so far, I may as well change the gear shifts, etc, to an 8 speed rig. My question is this|:
Given the thinner cogs used in 8 and 9 speed cassetes, is it possible to fit an 8 speed cassette on a 7 speed cassette hub? My rear wheel hub is an Alivio 7 speed casette model. Thanks,
I have no problems putting a modern SRAM 7/8 speed chain through a new Shimano front mechanism (probably an 8/9 speed mech). Rear is 7 speed. Shifters are MTB trigger type. Bike in question is quite small, so chain angles are more severe than many.
There is very slight scrape of chain on front shifter at one extreme of the range. Hardly noticed, and dealt with by unwritten rule of "select another front ring, there is a lot of overlap".
