Speaking of a Roller Derby

I ran into a few headed to last week's roller derby. I read of even more who were there.

Then I read about an entirely different kind of roller derby on the other side of the world.

The first type roller derby I've seen on TV or heard about all my life. The second one, not so much.

I have been trying to hook up my old, semi unreliable cyclo-computer to my road bike. I want the cadence function only. I now know I've been going about my cadence-o-meter all wrong. I will be needing the plans for that huge pie plate on their wall. (though I don't need one that says 400 on it).

Time to hit the basement and see if I can get to 122 RPMs on my rollers.