Pitot tube testing

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Darkstar
Posts: 19
Joined: Mon Feb 06, 2017 8:58 pm

Pitot tube testing

Post by Darkstar » Mon Sep 17, 2018 1:00 pm

I've had a few rides where the wind readings seem "off" - e.g. headwinds of the type where you have to pedal downhill to avoid decelerating, but reported as 3-5mph. Or tailwinds when there doesn't seem to be one.
It's not offset/consistent enough to be certain about, but it would be useful to have a wind sensor testing process.

Can I stick the bike on a turbo, make sure that the speed sensor is on the rear wheel & then ride at a steady speed for a bit & download the result? That seems to be to be a mimic for a blocked wind port (so the reported wind should be the opposite of my wheel speed).

Or could I block the port & try to ride on a short, flat, windless section & do the same thing?

Velocomp
Velocomp CEO
Posts: 5240
Joined: Fri Jan 11, 2008 9:43 am

Re: Pitot tube testing

Post by Velocomp » Tue Sep 18, 2018 9:23 am

Unfortunately your tests won't work. What's needed is "natural" wind to compare to bike speed.

The best thing to do is a short out and back ride. Post the results here.
John Hamann

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