Here is a "GPS Essentials" flight data chart from a recent flight in Aluminum Plane #1:
|Belite Ultralight Aircraft Performance Graph|
All this with a tiny 28hp engine.
You can also see some two pass runs, demonstrating cruise speed. With the wind, ground speed averaged about 64mph and into the wind, ground speed was 47mph. The average is 55.5 mph, once again, with a 28hp Hirth F33 engine.
Fun, fun, fun!