"Marc Ramsey" wrote in message
news

Many in the group fly in the western US, where summer density altitudes
range up to 10,000 feet. Yes, the numbers I've run indicate that we need
at least a 250 HP turbo diesel (not so much for the HP as the torque) to
be able to launch something as mundane as a Grob 103 with two aboard.


I'm curious about how these calculations work. At Hobbs, NM, elevation
3,700 feet and long runways, the 90 HP winch, using heavy wire, doesn't
have any trouble at all with a Grob 103 loaded with two aboard.

Makes me wonder what we are doing wrong.

Larry Pardue 2I