Alright, so I'm having some crank problems that require a little back story. Before winter I completed a fixed gear project from a crappy old Schwinn I found in my buddies garage because I didn't want to commute on my road bike. In order to fit a normal bottom bracket on, I had to use an adapter (because originally this thing had a one piece crank.) After a while of riding, my left crank arm came loose. A SRAM rep told me this was because after I had originally put the crank arm on, I tried to take it off, being a noob I had no idea I wasn't supposed to do this, and apparently messed up the crank arm. After learning this, I ordered another crank arm and rode around for a while, only to find that the new crank arm fell off after maybe four or five rides (I'm assuming because the original incident messed up the BB spindle.) Not having much time before the snow fell, I lost my will to fix this thing and put it in my garage. What I want to know now is, Im assuming I need to buy a new bottom bracket and crank arms, is there any chance that the adapter could have caused this to happen? I'm just making sure to cover all my bases before I go and order these new parts, because I don't want to have to keep replacing this. Can I just skip ordering these parts and use some sort of metal binding solution to essentially glue the crank arm onto the spindle? (my father who's a mechanic and originally got the bike sand blasted for me suggested this)
Also, will a 9 and 10 speed chain whip work for an 1/8th inch cog?
Thanks a lot in advance!