More wheel testing - coast down

I took the TT bike and three sets of wheels over to Belcarra to see if I could find a nice spot to do a coast down.

The first attempt using the White Pine Beach road proved to be too short and too slow.

The next was better, using Bedwell Bay Road. Dropping for about 200m (7%) from the White Pine Beach turnoff, to then coast up to the Belcarra Park turnoff.

But the results where a bit disappointing. Even with three sets of two tests (one in each direction, the advantage of using a bowl...) for each wheel set, it was hard to get believable results. Possibly from traffic. There was not a lot, but it takes a while for the air to calm after a couple of cars go by. And in a couple of the tests there where cars passing in the opposite direction.

So nothing worth reporting. Perhaps the Bontrager Aeolus 6.5's where faster than the Zipp 404's. But maybe not...

I'm going to try again using a longer test. I think a section of the Belcarra Park Road will give me close to 900m of about 6% grade. Not a bowl. So I'll have to use time to travel fixed distance from exact same starting point. With close attention to path (stay set distance from center line.)

There is very little traffic on that road. And the longer distance should get me to a terminal velocity for a fairly long test time.

Finished the evening with a quick V02 max ride from White Pine to Belcarra to Burrard Thermal and back to White pine. 58 TSS points in 33 minutes... Mostly from the climbs.