Dan G wrote:
Should say that it's "full power all the way up" the main climb, of
course we back off at the top. But there was some suprise at the launch
point recently when a K21 waved off... the common thought was "K21s
should be able to handle it". Maybe it could if it was no wind, but
with a good headwind they just can't.

Headwind makes a big difference. Our underpowered winch can overspeed
the twins easily if the wind gets above about 15knots. If indicated
airspeed is above 60knots, you're getting diminishing returns from the
launch.

Frank Whiteley