At 08:15 30 December 2015, wrote:
Try running your variometer on cockpit pressure sometime and see how
accurate it is.
I did. It is as accurate and fast as an uncompensated winter variometer.
There is an effect caused by varying dynamic pressure, but if you fly
reasonably constant speeds it cancels out in the differential calculation.



Hmm, hadn't thought of that. Open the vents and fly fast when near an
airspace ceiling...close them when approaching the minimum height finish.
Good idea.

Jim