Hard work this morning. Dunno why; just seemed a big effort. Someone even went past me on Anzac bridge. Bah. Perhaps it's because I spent the long weekend eanting junk food, not sleeping properly and drinking too much. Makes me sluggish!

With regards to cycle computers, I had the same problem with mine; I fixed by adjusting the magnet so it was closer to the pickup, and also oriented the same way (rather than at an angle). I think the problem is when the wheel is spinning fast, the magnet needs to be closer to actuate the sensor.

Then the whole thing fell apart and I ditched it, freeing my self from the tyranny of the little whirling numbers. But that's another story.