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Stan wrote:
> This should get some of your winter doldrum brain juices flowing...
>
> Anybody have any good ideas for a lightweight but strong way to get
> around the lower spar caps on an aluminum strut braced wing?
>
> Assume a 1.5" wide t-cap. The heavy way is to add two strut attach
> straps and two 3/4" spacers with thru-bolts.
>
> Ideally it would be best to rivet (vs bolt) the attachment to keep the
> stress distributed to all of the elements rather than causing the bolts
> to be put into bending (from the elements being disconnected).
>
> Without going to a relatively complex machining (or machined spacer) do
> you all have any ideas for transferring this load into the web and caps
> without a lot of weight?
>
> Thanks.
>
What's wrong with the way Cub and Super Cub do it? (and everybody
else)--- two mild steel flanged straps with spacers. Or you can go
4130. The fittings are channels attached with bolts through the shear
web of the spar.
The struts attach with the strut-attach fittings in double shear.
Lightweight, simple, bulletproof. Also unchanged since the 50's
because nothing is better. Brand new Super Cubs still have these
fittings.
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Re: clever ideas for a lightweight strut attach
