With the gas strut in its factory position, the strut pushes down along the
door jamb, and inboard and
slightly up on the unsupported corner of the door. Reverse this, and the
strut pushes up along the top of the
door jamb, and down and somewhat out at the sharpest point of curvature of
the frame. If I also remember, this
fix was proposed to prevent ballooning of the door frame in the air owing to
cockpit-ambient pressure
differentials.
Although this gets rid of the upforce at the door frame corner, it would
seem to put the area around the
new strut mount point at risk. Unless this area of the frame is much
stronger than the corner...
Shaun
A207
----- Original Message -----
From: "Fred Fillinger" <fillinger@ameritech.net>
Subject: Re: Door strut question
> europajim@juno.com writes (in part):
>
> > When the a/c is left setting around (which they will do) the constant
pressure
> > from the cyl. pushes the rear corner up away from the fuselage....So by
reversing
> > the action of the cyl. to pushing down from the fuselage to the lower
part of the
> > door instead of pushing upward from the fuselage to the door at the top
by the
> > hinge line, you stop that phenomenon from happening....I've heard that
some later
> > doors were reinforced to prevent this but it was only a rumor and I have
no
> > verification.
>
> I'm still unclear as to the benefit of reversing the strut. It's
> force is bi-directional, except maybe to allow additional clearance to
> get the angle better as Tony K. points out?
>
> Anyway, as far as stiffening the door itself, I wonder if one could
> take a couple or so ounces of resin and milled glass, in a soupish
> slop, and inject it into the innards of the door, surrounding the
> strut attach piece. I notice that the door itself flexes fairly
> easily in that area, and yes, in the heat of sun, it eventually takes
> a new set. But with a real thick resin mass there, it may be less
> prone to do so, and it will be cooler than the ouside surface. Also,
> the milled glass should help too (flox is too clumpy to syringe).
> How's this sound? I know about weight, but it's net of the weight of
> other fixes proposed so far.
>
> Regards,
> Fred F.
>
>
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