Graham,
IMHO the cups are there only to assist rigging and are not supposed to give
any structural support. I always thought that it was the spar pins that
were supposed to transfer the 'load' to the fuselage, or the other way
round, depending on whether you are on the ground or upside.
If this is the case, then the wings will always need 'jiggling about' as I
don't think that the weight of the wings should be taken on the lift pins
alone either, although once the wings are slotted into the lift pins, then
a quick-let-go-and-spar-pin-insertion is OK - and necessary for rigging.
This being the case, I think it is luck whether the spar pins go in easily
or not. For what it is worth, mine require quite a bit of jiggling about,
although as yet, I have not tried it without someone at the wing tips to
give assistance.
Having said that, this does not answer your original query about 'flying
Europas' as mine is still firmly on the ground.
Regards,
Peter Davis (C152) (peripatetic 'Net user - trying out all the access
providers)
----------
>
> I would be interested to know the insertion forces of the main spar pins
in
> the current flying Europas. On mine it is essential that the wings are
> supported and wiggled at the tips before the pins can be inserted. This
> means that rigging cannot be done single handed without 13 ft long arms
or
> fiddling around with supports.
>
> Ideally the weight of the wings should be taken by the structure (cups,
entry
> frame) such that the holes are in line before the pins are inserted, but I
> have so far been unable to achieve this happy state despite
experimentation
> with packing pieces. Incidentally the pins drop in easily if the wings
are
> pinned to a jig accurately matching the cockpit module holes, so there
are
> no dimensional errors. How about it Jim N ?
>
> Graham C - G-EMIN
>
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