I have an old GT Timberline with a 7 speed cassette on it. The chainrings are still the original bio pace shimanos and they are worn out or soon will be.
I am wondering if I get this crankset will it work with the 7 speed chain and cassette? Will it work with the current shifters I have? What would I need to change to make it compatible? Remember that I don't want to buy a completely new drive train if I can avoid it.
The ideal scenario is to just install the crankset and bottom bracket. What issues would I run into if I just do that? If I have to change to an 8 or 9 speed cassette will I have to replace the rear hub as well?
Currently I have all shimano components except the cassette which is shimano compatible. I'm pretty sure the derailers will work unless there is an issue with the index spacing. The shifters are shimano revoshift (twist grip).
Thanks in advance for the help.