What did I do wrong? Gears shifting all over the place!
This morning, there was a fall of snow. So, before setting off to work, I decided to swap my semis for a pair of big fat knobblies.
All seemed usual until I got a few miles down the road. I'd just cycled through a short stretch of snow when my gears started slipping as if the chain had difficult engaging with the rear cog.
I noticed this was only happening on 6th, so I changed to a lower gear. Soon, I had problems with all gears above 3rd -- no matter what front gear was used -- but if I put too much pressure on the pedals, even 3rd would jump about.
The jumping seemed to coincide with the turning of the pedals -- depending on what gear I was in. The cables seemed fine, so did the shifter and derailleur.
I thought the snow might be causing this, but other cyclists seemed fine and, despite the snow turning to muck and rain, the problem persisted all the way to work.
I'd like to cycle back at a better pace -- what happened?