Garmin will soon give us G3X Touch users a nice new feature for free. In preparation for this I made a flight yesterday to collect the needed data for it. I wanted to verify earlier numbers.
Result from the worst case scenario (Engine still running but without power and prop full forward):
Measured at the best glide speed of 95kt IAS: vs -995fpm
From this you get:
no wind glide ratio 1:9.67
no wind decent angle 5.905 degrees
no wind 1.59NM / 1000 feet agl
no wind 2.85 km / 1000 feet