Originally Posted by Sammyboy
Quite. I run a 42/15 setup, where I might more normally be starting in 42/17 away from lights or somewhere where hard acceleration is neccesary. This means that I'm torqueing the chain more, which is what would slide the axle forward in the dropouts. If anything, I'd guess this is what happened to the OP
There is more force on the chain not torque. The torque on the wheel is not higher.
Originally Posted by Sammyboy
In terms of pulling the wheel forward, you're right. I was thinking of the twisting effect on an axle which won't be as strong as a solid, but that's not relevant to the post here.
If there is a significant twisting effect on the axle your bearings are ****ed.... really really ****ed.