Originally Posted by
BarracksSi
Pick a gear combo on your geared bikes and don't shift for a week.
You could pick one that'll give you the same ratio as whatever single speed you're looking to buy, or you can change it around and plan on changing the new bike's chainring or cog to match. Just don't shift at all no matter how tired you get.
+1 Great idea (and so simple, as most great ideas are.) I have a dept. store hybrid that I am considering turning into a single speed (not fixed - not yet, anyway). This idea will help me decide on gearing. Any other suggestions for gearing would be based on that rider's experience, ability, and riding environment.