Just built up a fixed 92' trek 400. I'm just wondering how much chain stretch I can expect out of a brand new 1/2x1/8 kmc bmx chain. I have about 10mm left in the back of the dropouts. It worked out well because I was able to get good chain tension with the axle far forward in the dropouts, but since they're shorty horizontal dropouts I just need to know if I can expect the chain to stretch too far...

Thanks!