Testing the actual glide performance of your motorglider is fairly simple. I chose a "dead" winter's day with little or no thermic activity and did a series of climbs to just over 3000'. I then cooled the engine for a while, shutdown, feathered the prop and closed the cowlflaps. I established a pre-determined glide speed and maintained this as accurately as possible. As I descended through 3000' I started the stop watch and noted the time every 100'.
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