On 3/19/2013 4:22 AM, waremark wrote:
On Sunday, 17 March 2013 18:17:17 UTC, Eric Greenwell wrote:
On 3/16/2013 11:42 PM, Chris Rollings wrote:


Up elevator only matters on a nose-wheel aircraft. Most empty
gliders sit

with the tail-wheel or skid on the ground so elevator position is
almost

irrelevant.



The comparable glider errors I see are leaving the tail dolly
attached

to an unattended, unsecured glider; not putting the flaps into
full

negative; and not turning the glider perpendicular to the wind.


Re parking with the flaps in full negative - the ASH 26 manual tells
you to put the flaps in neutral if leaving for a while. I wonder what
the reason is - protecting the seals? I always do what I am told!

Mark Burton

If wind isn't a factor, then flap 3 (neutral) is a good choice to
preserve the camber of the Mylar fairings. Still, I keep my glider in
it's trailer most of the time, using a bungey to hold the flaps and
ailerons in full negative so they don't flop around when towing the
trailer. The top Mylar lasted about 10 years before it needed replacement.

I don't think leaving it in negative (flap 1 or 2) during the occasions
it's sitting outside will significantly affect the lifespan of the
Mylar. If you put covers on it while it's outside, flap position
probably doesn't make any difference in the wind, so flap 3 could be
safely used.

--
Eric Greenwell - Washington State, USA (change ".netto" to ".us" to
email me)