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david.corbett5(at)btinter
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 Posted: Sun Aug 12, 2007 1:06 am Post subject: Europa-List Digest: 5 Msgs - 08/11/07 |
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Duncan,
Just nipped it up with the ratchet - slightly more than finger tight!
David
Time: 03:46:46 AM PST US
From: "Duncan & Ami McFadyean" <ami(at)mcfadyean.freeserve.co.uk>
Subject: Re: Mod 74 progress part 2
<<Any questions??!!>>
How tight did you tighten the nut, given that the instructions don't
call for it to be tightened?
Duncan McF.
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ami(at)mcfadyean.freeserv
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| Posted: Sun Aug 12, 2007 1:31 am Post subject: Europa-List Digest: 5 Msgs - 08/11/07 |
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Enough to seat it nicely, then!
Rgds.,
Duncan.
do not archive
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ptag.dev(at)tiscali.co.uk
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| Posted: Sun Aug 12, 2007 5:25 am Post subject: Europa-List Digest: 5 Msgs - 08/11/07 |
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Hi! Duncan
It will be somewhat more than finger tight if it engages the nylon lock
ring. I've never known a nyloc nut you could do up with fingers whatever
size! I've just pinched mine as they bottom on the washer well after
they engage the nylon lock. The torque to drive the pin through the
nylon lock is considerable .On the starboard wing I had to bed a
secondary piece of metal into the construction since for some error on
the alignment of the flap hinge bracket and bedded both washers into
position with redux curing over night with the lift pin well greased. On
removal of the pins I made extensive degreasing efforts.
On each location I made a small wooden hard wood wedge with a gradual
slope to measure the position of the pip pin hole and marked the C/L of
the pip pin when the wedge became tight.( ensuring it was entered from
the same direction as the marking was done initially.)
I only did one rig with redux in place and the lift pins were bang on
the right position.
My wings always needed to be held aft at the tips to fully engage the
aft lift pins and they still do.
I must confess I used Redux on the pin threads and female threads
allowing to cure overnight and the pin stayed put whilst I cranked the
nyloc nut up. (thankfully).
I'm thinking ....what if it is ever necessary to remove /change the
lift pin? This is the second time it has been changed. First conception
is a home made hexagon ring spanner from a piece of stainless sheet
suitably fixed in the hole and enclosed for ever ! It would be of
minimal weight and save much hassle in the event...........!
Regards
Bob H G-PTAG
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