Bike chain, how many speeds, runs inside
a chain case, how fast, how much power
transferred, new cogs or old, lubricated,
how frequently, etc., etc.

OK, then let's assume a single speed bike,
either Torpedo or Shimano. It does have a chain
guard. Speed doesn't exceed 25 km/h. The person
cycling weights in at 80 kg. The chainwheel and
sprocket are 10-15 years old. The chain is
lubricated one a month.

Oh yeah, the chain is the Shimano CN-NX10 1S
chain which is 1/2*1/8.

(silence)

"Good specifications, Manny. In that case,
I don't know"



--
underground experts united
http://user.it.uu.se/~embe8573