Originally Posted by darkmother
Doesn't make any sense to me. Look at it this way, on a MTB with a 22 tooth granny and 175 mm cranks, a 200 lb rider is going to produce 700 lb of tension on the chain while climbing. Those chains don't break much, if ever. You will not be able to come anywhere close to that chain load with typical fixie gearing. A wider chain may be a better choice, but the narrow is more than strong enough.
I agree mr. dark mother. People have been spouting nonsense like '1/8" is stronger', 3/32" can't withstand the forces that track riding puts on a chain'.
If you look at the math, your 100# girlfriend spinning in the granny gear on her hybrid will
ALWAYS put more force on the chain than you can, any day of the week.....