Originally Posted by
highroller
1. My 7 speed freewheel failed and come apart, so the thread is stuck on the hub while the cogs have come off. Is it possible to remove it or do I need to use a new hub and lace the wheel again?
If it's already broken it won't matter much if it gets more broken - so, sure. Easiest is if the required freewheel puller still engages, in which case you just have to muscle it off. If the puller won't engage, disassemble with force until you reach something that can be clamped enough to unscrew the remainder. I'd recommend a big pipe wrench for the job. If you're handy with the angle grinder you can cut it off. Some skill required as not to mess up the threads.
Originally Posted by
highroller
2. I have a spare hub but it is 130 mm rather than 135 mm. can I use the nuts of the old hub which are over 2+mm thicker to make it into a 135mm?
There are a coule of different threads out there, so they might not fit the axle. But yes, in general a 130 mm hub can be made to fit a 135 mm dropout by adding spacers. You need to monitor wheel centering/dish though. Best result is to add spacers to the left(non-drive side) and then redish slightly.
Originally Posted by
highroller
3. The hub is a 8/9 speed cassette compatible. I was thinking to make it into a 8 speed. I have a 8 speed cassette, rear derailleur, and shifters. Do i need to change the front derailleur, cranks and chain or can i get away with using the old ones?
You can probably get away with using even the old RD, while the front bits can remain the same, I'd recommend a chain swap though.