bottom bracket for singlespeed

[jimihendrix]

Does singlespeeding put the drivetrain under more stress?

Whats the difference between a fit rider pushing a 32/16 gear up a hill on a geared bike and a singlespeeder pushing a 32/16 up a hill?

Be interested to know if there is any data on this.

This is something I have wondered for a while. :?: :idea:

I suppose if anything, you might occasionally use more torque to get up the hill in that single gear where you'd wimp out n change down. All I can come up with.

Yeah, a rider with gears almost always wont be pushing 32/16 up a hill when the choice of ratios is there, an SS drivetrain is subjected to a lot more torque, i destroyed a hub body which was working fine with gears and just snapped a pair of cranks which again were fine on geared bikes.

But a standard Shimano BB should be fine.

 

[hamster]

The other one is wear - it's spread across cogs on a geared bike. So stuff wears out faster, but only in proportion to use, not some magic SS thing I suspect.

It always surprises me that people run 32/16 instead of say 42/21 as this would give much lower chain tension and so less stress on the drivetrain.

 

[Xesh]

It always surprises me that people run 32/16 instead of say 42/21 as this would give much lower chain tension and so less stress on the drivetrain.

Just what I'm going to run on my SS as I've got a Rock ring I want to fit. Most people probably run 32/16 as the parts are more common in SS form. Also has to do with clearance issues between the chainstay, ring and the ground as well as the fact that bashguards are easier to get in 32T sizes than 42T.

I don't see chain tension being less though. The force will be spread over a greater area with the larger ring/sprocket and so will reduce wear rate on the drivetrain.