Simon:

The speed of sound at sea level is 1225 km/hr (661 knots for Andy) or 761 mph for all American friends. Consider a flying stab for the transonic speed range. Yeager found that out for us. No need to re-invent the wheel. It is still round!

Here are my best guesses:

- your plane will make a horrendous screaming noise, reminiscent of the way EdEdge's plane always screamed at him.

- you will be marginally faster (max. 5%?) in level flight.

- you will accelerate noticeably faster out of the turn

- crashes become more expensive. Andy and I know the crop fields do not grow new Neu motors.

My first Nooner had a series 6 motor that drew 35 amps (388 watts), had a 40 amp ESC and was not noticeably faster than my race legal Nooner.

Oh, by the way, some race Nooners were drawing 22 plus amps (static) on a Castle 18. Mine was propped to draw exactly 18 amps static which surprised a lot of people.

My conclusion-

**18-20 amps static on 3 S is the speed limit of the Nooner airframe. ** Just like a displacement boat which can

**never** exceed a speed on the water of 1.4 times the square root of the waterline length...... no matter how much power you put in it.

My 2 cents worth... and I give change.

Frank