I just built up an '83 Mercx pista and I'm having some trouble with the drivetrain.
Sometimes, when I go up a hill or need to push back to stop and I really need to push down hard on the pedal it slips-meaning, that it gives as if there was no resistance. Usually when this happens I end up falling on my face. It's happened twice so far and I'm just about to buy a different chain (I am using a Miche now), but figured I'd see if anyone could offer any advice before I ponyed up the twenty-five dollary-doos for a eco izumi.
I've checked the cog and that doesn't appear to be moving. The chain line is pretty straight. It is probably off being absolutely straight by a millimeter or so.
Also, I have a pair of C-Record pedals that I was using with this set-up, but the clip busted the second or third time I needed to stop. I only use a single laminated strap with these and would like to keep it this way. Does anyone have any advice on keeping these things from breaking when you need to stop?