Jon,
I've done a number of these spar straps and all had to be disengaged
alone by me in the shop before the guys arrive.
Once cured, I use a long putty knife (flat blade scraper of about .025
inches) and slide it between the release tape and the glass strap.
When visually I see I have air around the contact points on the aft side
top and bottom, then I wiggle them.
I pull the pins out with the wings properly supported by saw horses or
suitable supports. Normally I have saw horses midway down the wing and
both spars pinned. When ready to remove I support the mid point with a
low saw horse or tool stand shimmed up to give support and make removal
of the pins uneventful.
I find that the removal of the pins and a slight up and down movement of
the wings clears any stubborn corners I couldn't get to release.
Lastly, I don't use a jack, but my back against one root side and my
foot against the other rib (properly padded if the wing fillets are on)
and push. I never had it fail me, but now that I am older, I have one
of the guys help me push as I don't have the flexibility I used to have.
A good jack is your auto screw jack with a properly sized piece of
lumber to join together between the ribs and light pressure is all that
is needed...
Bud Yerly
Custom Flight Creations
----- Original Message -----
From: JonSmith<mailto:jonsmitheuropa@tiscali.co.uk>
To: europa-list@matronics.com<mailto:europa-list@matronics.com>
Sent: Wednesday, October 14, 2009 9:26 AM
Subject: Re: Europa-List: Help Please!!
<jonsmitheuropa@tiscali.co.uk<mailto:jonsmitheuropa@tiscali.co.uk>>
Thanks for the suggestions everyone. I'm going to have another go
tonight with a little heat and effort to start with!! Yes (Bob) the
wings are pinned together OFF the aircraft, but the only difficulty with
using jacks etc on the spar ends is that the rigging cup is bonded on
the port wing thus the stbd wing's spar tip is hidden within!!
Cheers, Jon
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