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Thanks to Scott, and the others who replied off list. There’s a later
update than my manual pages, as well as a Service Bulletin that I should have
checked before wielding the drill. The good news is that I had a spare
pair of GM03 parts, rod ends and over center springs buried among my castoffs,
so we’re back in business at no cost.
Regards, Chris.
Sent: Sunday, June 01, 2014 10:26 AM
Subject: Re: [LML] Re: LNC2 Drilling GM03
Chris,
The part you have was a replacement for an earlier method that had some
smooth ended rod-end inserted into a smooth hole in the link and the drilling
was necessary to hold it all together. BUT, it was extremely hard to
properly drill the hole with hand tools (Lancair assembly feature in the olden
days) - thus, Lancair came out with a new link that was threaded and had
heli-coils inserted to strengthen the holding power of the link to rod-end
connection held in place with a lock nut. The directions pre-dated this
later improvement. Unfortunately the drilling destroyed the
heli-coil. One possibility is to obtain a new set of helicoils and the
tool to insert them and ignore the hole already drilled. There are other
possibilities but I leave that to your experimental imagination.
The pic below is what the newer style would look like, sans hole, after a
few flights through bugs and stuff.
Good Luck,
Scott Krueger
In a message dated 6/1/2014 8:50:01 A.M. Central Daylight Time,
marv@lancair.net writes:
Posted for "Christopher Skelt"
<cskelt@earthlink.net>:
>Fellow LNC2 builders,
>Figure
5-6 on page 5-13 (Rev 0 11-1-91) of the 320 FB Manual shows the
>outboard part of the over-center linkage with an AN3-7A through GM03
and the
>rod end—presumably to prevent it from loosening. I
just drilled as shown in
>the drawing and removed the rod end to clean
out the swarf. This was a bad
>idea as the linkage has a
steel thread insert that was broken up by drilling.
> See the attached
photos and the diagram from the manual.
>
> What have other
builders done here? I have a photo from some years back of
>an
anonymous LNC2 with no bolt through the rod end.
> Do you really need
this additional measure to prevent the rod end from
>rotating?
> The Kit Components website lists “LINK MAIN GEAR BOTTOM LONG
GM03B.” Is
>this the right part?
>
> Regards, Chris.
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