On Jan 7, 10:55*am, Gary Evans wrote:
I had run some L/D tests on my DG808B several years ago using GPS
waypoints on a moving map for accurate distance control and measured
altitude loss during long early morning two way runs. While no method
is going to be perfect I consider it to be adequate for choosing polar
data for the flight computer. I believe the factory estimates are too
optimistic.

The results can be found in our ASA Newsletter history here.http://tinyurl.com/262m9pt
See the 2003 Jan/Feb issue.

Thank you Gary for the link to your write up.