I would suggest, rather than plugging and unplugging an extension cord,
to simply use a lamp timer.

For replacing those canopy struts, when the strut for my LAK-17a failed,
I contacted the manufacturer (of the glider) and got the part number for
the strut. After a bit of research, I found that it was the same strut
as used on a particular make and model of German car. I was able to
purchase one at a local auto parts store. I had to replace the socket
ends of the strut with the rod ends from the old unit, but that was not
difficult. This is probably not legal for a certificated glider, but
mine is experimental.

On 12/13/2015 9:32 PM, George Haeh wrote:
My canopy gas strut failed hibernation last
winter after a couple weeks of - 30C as did
another owner's.

Took a few months to get a replacement
and a few days to squeeze it down enough
to get in.

In the fervent hope of not having to repeat
too soon, I picked up a 25W terrarium
heater wire from the local pet store, taped
it around some empty cans, tucked into
duct insulation to avoid hot spots on
expensive composite and put under panel
just behind rudder pedal.

Ran the wire out the canopy opening,
connected to extension cord and
alternated between pushing in the fuse
and pulling the extension cord. There's an
opening for the wire in the bottom of the
trailer when you pull out a rubber plug.
Reminder to self to close hole with plug if
possible, or steel wool if not. Neighbors'
cats patrol the garage in any case. No
signs of rodents, but can't underestimate
the attractiveness of a warm place with
ample nesting material.

Lots of insulation put around front cockpit:
life jackets, cushions, sleeping bag which
won't be otherwise needed until spring.

I left the heater wire on inside the house
overnight. You can hold it in your hand
comfortably.


--
Dan, 5J