Subject:
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Re: Q: Making hinges stiff
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Newsgroups:
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lugnet.build
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Date:
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Fri, 18 Jan 2002 18:48:00 GMT
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Viewed:
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322 times
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In lugnet.build, Amy Hughes writes:
> Does anyone have any ideas for stiffening plate hinges?
>
> I'm building an ornithopter with click hinges between the fuslage and wings and
> between the passenger cabin and the rest of the fuslage. I'm using multiple
> hinges, so these are plenty stiff enough.
>
> The problem is with the hinges between wing segments (the wings fold in the
> middle) and in the tail. These are the plate hinges from the Imperial Shuttle
> set (the "car roof" hinges):
I've never found a satisfactory way to make these hinges bear loads.
Part of the problem is that there's too much leverage on one side,
and part is that there are only 5 fingers. The best way I've been
able to do it is to put a second level of plates as a "stop" on the
top or bottom--that limits how far it can bend in one of the two
ways. But my usual practice has been to resort to 2x4/2x9 plate
hinges, even though that involves an inversion of the stud direction
on the outer wing. For small planes, I stick to the small 1x5 plate
hinges--if you're using multiples, you might try interspersing those
with the 4x5 car roof hinge assemblies. Barring that, maybe model
putty?
Is there any permutation of other types of parts that would suffice,
if you had them on hand? Or is there something structural that
requires those particular hinges?
best
LFB
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