Vaughn,
Are you sure you mean TP6 retention? My understanding is that a tight fit
at TP6 is not desireable because it can transfer loads to TP6 if there is
play at other points in the sytem and this can lead to TP6 disbonding from
the tail plane.
Your method may be more appropriate at the TP12/ TP14 locations, which is, I
suspect what you really meant.
Regards
Brian Davies
_____
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of Europa List
Sent: 29 June 2007 15:45
Subject: Europa-List: Tailplane design
The person that started my kit did not have faith in the tail plane design,
nor do I. He designed and built a pinned clamping system that fits inside
the fuselage that would prevent any play from developing due to wear. I
don't feel that the retention between TP-4 and Tp-6 tubes to be adequate
because of the thin wall. If any play at all was present at assembly, it
seems that the slight movement would increase the size of the holes to where
it became excessive. I've attached a PDF file ofwhat I would like to do to
change it, but am not sure that it can be done with 100% realiability. Maybe
there are some engineers out there that can. The 3/8" modification has not
been done, so the idea of drilling out slightly smaller than 3/8" and
driving increasingly larger pins through to expand the holes to 3/8" while
work hardening them seems to be my other recourse. BTW, my old Sears garden
tractor used the same method of attaching the front axle to the frame as the
present system of a pin through thin walled metal and assembly that had worn
so badly in one year that it was hard to steer and impossible to mow evenly.
I took the axle off and had a tube welded in it and collars welded to the
frame and was able to get 8 years of satifactory service from it until the
motor gave up.
I have pictures of the clamp collars made and installed in my kit by the
previous builder if anyone is interested.
Vaughn Teegarden
N914VA - no progress
17:57
17:57
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