Here's a curious phenomenon... can anyone explain it?

I cycled in to work this morning for the first time in a few weeks and, as is often the case, I was struggling to keep up the intensity level after that break (pushing my heart rate up for extended periods is one of the things I find most valuable about cycling alongside running).

But here's the odd thing: when I was pedalling along, trying to maintain pace after an uphill section, I had this overwhelming sensation that my back tyre was running flat. There seemed to be a surprising amount of rolling resistance, but the wheel seemed to be wobbling like it was loose on the axle.

This was transient, of course. Once my heart rate had dropped a bit things felt entirely normal again, and when I checked the tyre pressure and wheel fixedness after I'd stopped they were both fine.

So where does the wobbliness come from?

Posted by Dunx at June 30, 2004 10:08 AM