Hi Ferg, I couldn't see any pictures ?
If what you have are steel pins with no heads, stuck in the bores of the fu
selage / wing spar bushes, here is one possible solution.
Auto body shops will have weld on studs for pulling dents out of body skins
, bit like the shanks of pop rivets. They are welded on a bit like spot we
lding, not too much heat generated.
These are then attached to a slide hammer to pull out the dent.
If you can get a wire through the seatback bush, to one side to make a grou
nd to the pin, and get the stud welded onto the middle of your pin, you may
have half a chance to pull the pin out with the slide hammer.
Get someone on the wing tip to wiggle up and down the same time as pulling
the pin.
Good luck,
Cheers,
Nev
-----Original Message-----
From: f.kyle <f.kyle@sympatico.ca>
Sent: Wed, Jun 5, 2013 5:28 pm
Subject: Europa-List: You'll cry.......
Cheers,
Before I begin this chronicle, I beg you - do not open unless y
ou have a modicum of forbearance and compassion. Do not open within 2 hours
of eating. This article is based on my Mono, but detachable wings make i
t a Europa item for all who crave enjoyment
.
NOTE: Due to size restrictions, addenda, sketches and photos follow in
=9CYou=99ll cry 2=9D. I used =9CADJUNCT=9D to de
scribe various items.
After 15 years of building and boasting, I got the fuselage out
of the spare bedroom, and up to the airport to match with the wings. Life
improved at home markedly, but the wings were not obedient - perhaps becaus
e they had waited through two winters while the fuselage lay in relative co
mfort.
Attaching the wings, there was a marked =9Cthunk=9D
when the port pip-pin began its entry. I noticed that it was in only one i
nch or so, and surmised that the port spar was the reticent item. While I w
as cursing and sweating at this event, a buddy came across the hangar and s
lid the starboard pin in, slick as a whistle.
I mused as to how to react ,and after some consultation with th
e burgeoning Advisory Board (casually forming at the hangar), calculated th
at a =98tapered spindle=99, suitably divided into sections woul
d easily (a) urge the bushings on the port side to align as it entered, (b)
if properly sectioned, would fall in sections into the belly (for recovery
), when pressed forward into the dark, (c) as the pip-pin was installed in
trail. The bushings would then become accustomed to their fates and obey i
n future.
I designed the item in question - see Adjunct A [see PINTLE2,
attached} - and asked Heinz at the warplane to fashion it. The idea was tha
t the sections would follow one another because of a centring pin guarantee
ing concentricity.
Now to the design: I tried to measure the free distance from t
he back of the starboard spar bushing to the fuel tank forward face, as to
be the free space into which the sections would fall after passing through.
The opportunity to do this was badly restricted by (1) my loss of many sket
ches I made and stored on the computor. This latter dimmed in utility and I
=9Cupgraded=9D (I think they call it). Despite a thousand oath
s of purity, the family computer agent lost many sketches, including measur
ements now hidden in the completed fuselage. Let the court examine the draw
ings in chapters called =9CFuel Tank=9D (my #16) and are title
d Fig.2 =9CStrap baggage bay to maintain desired position=9D a
nd Fig. 3, =9CSectional view through centreline of tank=9D., or
see below as Adjuncts (B) and (C). [ADJUNCT(B) is SpindleMaster, attached
] [ADJUNCT (C) is PORTwingBOLT3, attached]
Back to the design. This was completed after a long
day, at about 11:45 pm. I callipered the space across the tank bottom and
scaled the drawing to calculate the space behind the spar bushings to the t
ank forward face to establish the length of the front section of the spindl
e for its fall on reaching freedom - see item (b), para 4 above. As Adjunct
(A) shows it came to 4.75 inches with 5/8 inches of space remaining. Plent
y.....
The device was produced by my buddy Heinz at the Warplane Herit
age Museum across the bay. Heinz reversed the connecting pin between sectio
ns (for centring purposes) It=99s shown as dotted red in ADJUNCT (C).
Back to para 3 and the =9Cthunk=9D. In that split second, I
realised what had happened. In my torpor, I had transcribed 2-3/4 inches t
o 4-3/4 inches in the plan. The spindle had thumped the fuel tank and was n
ow jammed part-way into the spars and stuck - - and so was I.
The present state, as displayed in Adjunct (C) was drawn full-size. At righ
t the Port pip-pin shows the thickness of spars and seat bulkhead to be cor
rect..... the relative thickness of bulkhead and spars might be incorrect,
but the total was right. Now, the effect of the reversed Heinz inter-secti
on pin became clear. Instead of a depression into which I might drill and
tap a thread to hold a retracting threaded rod, I=99m looking at the
pin. I used the front sections of the spindle to guide a smaller drill bit
into the pin. However, it was perhaps 0.5 mm off centre and some of the pi
n remained erect. As I continued, I felt the bit snag the face of the spind
le and it rotated. With the other end snug against the tank, I panicked tha
t perhaps I was drilling a hole in the tank. I blanched even further.
I am now being educated as to what lies in that sacred cavern - aileron rol
l mechanisms, two spars, the pitch control tube and several sets of nuts an
d bolts with which to contend. None of these devices seem to be shown in re
lative/measured position - and I can=99t see to look in.
If you=99re still with me, see Adjunct (D), [PINTLEsite.jpg, attached
] a print of the spindle in situ, courtesy of Al=99s boroscope. Yup,
there are the twin scars of an attempt to handsaw the 3/8 inch (+/-) stainl
ess steel spindle, oh, and a single rut produced when it was the other way
around.
So there you have it. That is the present state of affairs. An expert here
banned the use of a moderate-sized reciprocating saw - as bestial - prepare
d blade is Adjunct (E). ADJUNCT (F) is P5090153.JPG, attached, and is an ex
tended hacksaw blade arm with about 2 inches of teeth exposed - used by han
d to dig two of those ruts in the pintle in the boroscope view. I am contem
plating welding a long arm with 2 inches of hacksaw blade at the business e
nd and a jig saw attached outside the belly panel hole. One must remember t
hat the pip-pin is about 2 inches from the outer skin, so a reciprocator mu
st not have a larger range of travel. That=99s why the expert banned
the =9CSawzall=9D as they call it and I reverted to the other c
hoice (F).
If you have come this far, you must have an opinion - not of me, that
=99s assumed - but of the solution. If so, let me have it. Otherwise, you m
ay want to haunt this site hoping to hear of another choice later. In the m
eantime, please tell me the width of the spars and the depth of the seat ba
ck, and any photo of the spar entry holes (port side) so I can visualise th
e contents of same.
As the Old Guy said, =9CI have to close now as I hear Sister coming u
pstairs with that @#$%^& syringe=9D.
Cheers, Ferg
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