Okay so I have an old 90's steel mountain bike with vertical dropouts that I'm converting to single speed using a tensioner. I have my tools on the way and I'm getting the Performance tensioner kit and a single speed SRAM chain. But a few questions left:
1) For the cranks, can I just pop off the inner chainrings and leave the big one on? That should hold by itself, right? Or do I need a dedicated single speed crank?
2) For the chain, how long should it be? Just enough for the biggest possible combination (48-20)? I'll probably be running (48-16) most of the time, even 48-18 felt too lose when I tried it with gears. I assume the chain will come with more than enough length.
3) How stable is the tensioner from Performance? It doesn't look like it has a cage to hold the chain; is it possible that the chain will fall off?
4) Anything else I should know for this?