Cobra bottle jack failure

On Oct 28, 9:43*pm, Uncle Fuzzy wrote:
My comet trailer had the scissor jack arrangement, and I didn't much
like that (after it failed) so I made this instead:http://www.youtube.com/watch?v=YP2AD8rtdpA

That's really nice, but:
- won't work on sandy surfaces (like at my home gliderport),
- won't work with really heavy gliders,
- doesn't provide height adjustment

The hydraulic jack is used to adjust the height during assembly;
I insert the wings, look down the wing-pin holes, and move the
fuselage up or down a hair until its perfectly lined up.

But nice for your glider !
Best Regards, Dave