Originally Posted by
dobber
An alternative method is to park the bike with the rear wheel fixed to a rack. Use a chain tool to break the chain, then remove the chain. Loosen the axles nuts and pull the frame away from the wheel, leaving it upright in the rack.
With the bike now free, walk around the wheel so you're now 180 degrees from where you were. Push the frame back onto the wheel axle. Reattach the chain. Tension the chain and tighten the wheel nuts.
You're ready to go.
Alternatively, park the bike with the rear wheel fixed to a rack. Use a chain tool to break the chain, then remove the crank arms and install them on the left side of the bike. Then, reattach the chain to the other cog. (Just be sure you have a lockring attached to your freewheel and the freewheel is designed to work opposite of all other freewheels).