Hi, this is my first post here. I used to ride quite a lot and am going to get back into it after ~8 years of not riding. I need a little help fixing up my old bike.
I have a 1990 Cannondale 3.0 14 speed racing bike that I am reconditioning. Low miles, great shape, very so-so Suntour Blaze components but what the heck, I already own it. The trouble is that the drive side crank's extractor threads are stripped. The crank is ok but I want to overhaul the bottom bracket. I have a couple of questions about how to deal with this.
1. Is there a way (not involving an obscure tool that is expensive and/or hard to find) to remove the crank arm without ruining it? If I can't reuse the crankset...
2. I would ideally like to reuse my chainrings since they have worn with the chain. What do I need to know about a crankset to know if I can put my old chainrings on it? Can I mix brands of cranksets/chainrings? Do different cranks have different chainring bolt circle diameters? Are different chainrings different thicknesses? Or are all road cranks/chainrings pretty much mix and match? It's not hard to find older cranksets on eBay, but it is hard to find Suntour.
3. If I figure out how to measure my chain and convince myself that it hasn't worn a whole lot (the bike still has its original front tire so this is a possibility), is it ok to just buy a new crankset with chainrings and put it on wiht the old chain and cogs? If so do I need to know anything besides the crank arm length, square taper, and number of teeth on chainrings? Is there any other measurement/parameter that I need to get right? How much can my chain have "stretched" before this is a bad idea?
Thanks for any advice you can give!