This idea sounds a bit crazy, but I may be of some help. What you need to
design is an over the center mechanism for the landing gear actuation. when
the gear is extended the swing arm links over extend past the center point
and it will act as a locking mechanism which will not transfer any shock
load to the servo. with this type of mechanism you will not need any
springs as the swing arm links overestend in the up and down position. I am
fairly sure this is how the larger scale R/C glider retracts work. You
might want to go to a scale soaring website to find a distributor of
retracts to ask some more detailed questions. If you need a visual of how
these mechanism's work, go to www.destaco.com they make these types of over
the center clamps for tooling fixtures. They even have a CAD download
section. Look over their site, find a clamp with a similar mechanism that
would work for you and download the cad file and steal the geometry. You
could probably make all of the swingarms out of G10 fiberglass with small
bronze flanged bushings and stainless steel shafting with e clips.
Hope this helps, and let me know what comes of it,
Marc Webster
>From: [EMAIL PROTECTED]
>To: [EMAIL PROTECTED]
>Subject: [RCSE] Re: LG for Kyosho F-16 PSS
>Date: Thu, 28 Dec 2000 17:50:24 EST
>
>Working on spring-loaded, manually re-set pop-down landing gear for my
>half-scratch Kyosho F-16 that will be a glider/sloper. I don't fancy the
>scoop for belly landings, so I want to make lightweight mechanical retracts
>that pop down when a mini servo pulls out an up-lock pin. Like Spring-Air
>retracts without the air part;-) Anybody have some expertise/ stories to
>share?
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