I recently purchased an older Giant Warp DS-One, just as a beginner getting into this. It's currently 7-speed, with V-brakes.
Before this, I also picked up a few new (or nearly new) components cheaply - SRAM X-9 Shifters, X-9 rear derailleur, X-Gen front deraileur, new chain, and a rear 9-speed cluster, as well as some Hayes Solo brakes.
The bike is a bit older, and from asking somebody more experienced, and he thinks I'm going to have difficulties upgrading it. Basically, I need help identifying the components, and knowing what to measure, so that I know what new part to ask for.
I managed to get the rear derailleur to fit, and the rear cluster I assume would fit? (It's the same width, so I guess the splines just have to match up, right?). I'm guessing the chain is narrower, and I have to change the front chainrings as well?
However, the chainrings seem riveted together and onto the crankset, so I guess I have to replace the whole set, along with the BB. However, how do I measure or tell what size or type of BB/crankset I have, so that I can identify it to ask for the new part, or search for it?
Also, I can't seem to get the new front derailleur to fit. The frame seems quite cramped, and the new SRAM X-gen doesn't' seem to fit in the space, and it also can't seem to clamp properly around the tube - too small? (The old one is a Shimano Acera, I think, from memory). Is there a specific front derailleur I need to find/shop for?
Finally, with the front forks, from what I can tell they're not disc-compatible. However, if I buy a new front fork, what do I need to check to make sure it's compatible with the rest of my bike? With the rear ones, I can just buy one of the rear-adaptor kits (e.g. Brake Therapy), and make it work, right?
I guess I'll also need to replace my wheels, since they don't support discs - should I replace the whole wheelset, or just the rims/hubs?