Originally Posted by
adlai
The initial batch of Army Armalite rifles had a problem with fouling up because they were machined to such tight tolerances. The AK47 in contrast had such bad tolerances that it could be thrown in mud and still work.
BMW cars are notorious for being tough to maintain. The tight tolerances explain a lot of it.
Certainly true that if thrown in the mud a single speed will work better than a derailleur bike!
