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@haj
Just tested yesterday doing 500m sprint intervals on my way home from work.. I'm able to hit 32mph, a bit of tailwind, and with 46/17, Marathon Plus 25's... about 150rpm says Rabbit's single-speed calculator.
But then, my shape is way off, that's why I'm starting doing interval training :) shit, I'm so not able to keep my speed up after about 400 meters of all out sprinting.
Measured with an Edge 705 GPS.
edit: oh, and the highest speed I have logged while biking is about 40, down hill on my touring-bike.