On 19 Feb 2004 07:26:30 -0700, (Mark James Boyd)
wrote:

Next, at least for the PW-5, the trim in the middle of
the range means that on tow the glider will (for some CGs)
lift off too soon. Put the trim fairly far forward,
or have someone about your size/weight fly it and determine
the best initial trim. Safeside for trim a little too
nose down.

Good point, and not limited to just the PW-5.

Personal view: like everybody else, I set a known or guessed approach
speed trim for the day if I'm taking a winch launch. However, for an
aero tow I prefer an even more nose-heavy trim. I find I have better
control at lift off and during the initial climb-out if the glider is
nose heavy enough to need a little back pressure to maintain vertical
station behind the tug. In particular, this avoids the pop-up that can
be a precursor to PIO.

Disclaimer: this works for me, but ymmv.


--
martin@ : Martin Gregorie
gregorie : Harlow, UK
demon :
co : Zappa fan & glider pilot
uk :