Why not install a GPS logger? It should be relatively easy to download the
data, and then parse it to give times of use. Something like FlyWithCE even
has software to log your times.

Peter

"Paul Remde" wrote in message
...
Hi,

I have a customer that has 2 2-seat (ASK-21) gliders for a commercial
operation. He is trying to find for them "Hobbs meters" with switches
that start allow the meter to record time only when in flight (over some
airspeed threshold). Of course, it would not be ideal if it recorded when
on the ground on a windy day.

Any suggestions?

I found some Hobbs meters with part number 85000C12 which operate on 10 to
30 VDC. But the switch is the tough part.

Best Regards,

Paul Remde
Cumulus Soaring, Inc.