Forwarded from the bounce bin by John Cliff. Message is from Tony Renshaw
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> From: "Tony Renshaw" <tonyrenshaw@hotmail.com> (by way of Graham Singleton
<grasingleton@avnet.co.uk>)
> Subject: Re: Tailplane questions.
> Chris and Susan Beck,
> My pins,and in fact several past builders have also commented that their
> pins are not parrallel. It appears that they may not have been jigged
> perfectly to start with, but it doesn't matter. The alignment of the bushes
> in the tailplane can no doubt be out by "heaps" before any loads would
> create a problem.I am only guessing that the distance from either bush to
> either the top or bottom skin would be a couple of inches Min.(I am 3500nm
> away from my tailplanes at this point in time). Don't fret, just align the
> trailing edges together and slide the tailplanes up snug onto the pins. I
> wrote about my technique to establish perfectly orientated holes for these
> bushes that preserve the tailplane orientation in a past Europa Club
> newsletter about 2 years ago,probably copy 17 or so at a guess. Have a
> read. I do however think that if the holes are slightly oversize and not
> quite orientated correctly it will make no difference if the gap is taken
> up with flox. Remember to plug the back of the holes somehow so that you
> can feed in flox and when you push in the bush it will exude completely
> around the bush and mate with all surfaces completely for transferring of
> forces onto the ply insert. Hope this helps and e-mail me directly if you
> need to know more about installing the bushes maximising strength and I
> will check my builders log when I get home.
> Reg
> Tony Renshaw
>
>
> From: Graham Singleton <grasingleton@avnet.co.uk>
> >Subject: Re: Tailplane questions.
> >Date: Mon, 31 Jul 2000 10:32:35 +0100
> >
> >>1) When checking the drive pins for level, the left side is a degree or
> >>so out with respect to the right side, i.e. the plane of the pins are
> >>not parallel to each other. I don't think this is a concern as long as
> >>the tailplanes are level with respect to each other before drilling the
> >>holes for the bushings, correct????
> >
> >That sounds OK. I once saw a Europa fly with the trailing edges of the
> >tailplanes half an inch out of line. The pilot, a very experienced test and
> >aerobatic pilot said he could not tell the difference.
> >
> >>2) I've noticed a disturbing tendency for the tailplane bushings to gall
> >>the torque tube, even with light lubrication.
> >
> >The difficulty is getting rid of all the drilling swarf. That's usually
> >what causes the galling. A dry lubricant might be good, it would help to
> >avoid dirt sticking to the tubes. Teflon or something perhaps.
> >
> >>3) I'm not happy with my hinge fitup on the tabs. The gaps are too
> >>large and slightly uneven. I plan to drill the rivets out carefully and
> >>use a hairdryer to soften the epoxy to pop them off.
> >
> >It might be easier to extend the edges with a narrow layer of BID inside
> >and flox to fill the outer gaps. Tiny bit heavier, there is virtually no
> >load at the edge.
> >
> >Graham
> >
>
>
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