Originally Posted by
fenny
It only gets to -10F here, but I hear it's all pretty much the same down to -40F (-40C), then you have to switch to something more exotic than my windbreaker + fleece + wool (not to mention start worrying about the viscosity of your freewheel grease).
No ... the drivetrain starts becoming an issue somewhere around about -25C. And when it dropped to about -30C I found that I had about 10 minutes to pick a gear before they'd be so frozen I couldn't shift anymore.
Read my century story in my post on Page 1 (Post #17).