Chris,

I used a handheld anemometer (Kestrel or La Crosse) set on meters/second to
quantify the flow from a cockpit vent when I was improving the flow in my
first glider.

As suggested by others, a manometer would work as well, but I had the
anemometer handy. You do have to measure at the same distance form the vent
each time, of course.

bumper


"chris" wrote in message
...
I was hoping to work on sealing the canopy frame, control connections
etc, as well as adding an air exhaust to increase the ventilation.
If I were to increase the ventilation in the cockpit and try various
options can you think of any easy ways to test and compare how
effective different options are?
Is there some easy way to measure airflow coming in [at a certain air
speed] on one flight versus a later flight?

Chris