I put on an RK Chain at the end of last year and both of their sprockets. Since than, I've put on just over 9K on the chain set. In the past month, I've had to tighten the chain twice. On the last time, I haven't even gone 200 miles and it's loose to about 1" slack. Could there be something wrong with the chain? At the start of this season, I was surprised to find the chain pretty rusty just after winter. Keep in mind, the bike is kept in an insulated garage and wasn't ridden in the wet over that winter. I took the rust off with some steel wool and it hasn't returned. My OEM chain went 25k with about 4-5 adjustments over it's life (in addition to loosening for tire changes, etc.) I thought RK was a good chain brand, but with not even 10k on the set, that is disappointing.
I am torquing the rear axle to the correct ft-lbs and measuring the equal distance with a dial caliper.
Any suggestions or can anything else be causing the chain to get loose like that?
