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Date: Tue, 03 Apr 2012 13:28:57 -0400
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Subject: Re: [LML] Legacy overcenter links
From: John Smith <john@jjts.net.au>
Thread-Topic: [LML] Legacy overcenter links
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Charley,

Kit number 323, flying since end 2010, and about 80 cycles. I have already
repaired my main gear over-centre link actuator attachment tabs - they
showed signs of fractures, but nothing like yours. Nose gear seems fine,
for now, but I'll have to change that sometime soon. BUT=8A.what your first
pic seems to show is an emerging forest of fatigue cranks around the main
over-centre link attachment shank. I find that a bit worrying, as failure
in that area was not the subject of the SB 074-0111.  What does Lancair
have to say about that? And I wonder why they haven't covered that in the
SB-074=8A or is there something else coming from them?

Regards,

John

=20
John N G Smith
Tel / fax:    +61-8-9385-8891
Mobile:      +61-409-372-975
Email:         john@jjts.net.au


On 3/04/12 10:21 PM, "Charles Brown" <browncc1@verizon.net> wrote:

>Short story:  My 2006 Legacy kit with 2008 overcenter links has the
>flawed parts and needs fixing.
>
>Sorry gang, I couldn't find the recent thread to link this to, but it's
>about the overcenter links and service bulletin 074-0111 covering
>overcenter links and main gear retract actuators.  This is from my
>Legacy, relevant data:
>-- Kit #299, original parts issue Nov 2006
>-- Overcenter links updated Aug 2008 because of cracks from the
>manufacturing process found in original issue links (pic 1).
>-- First flight Sept 2011, now has 110 hours and approx 200 cycles on the
>gear.  Nothing rough, I always make perfect landings...  er...  mostly.
>-- Left overcenter link severely cracked on one tab, not the other (pics
>2, 3).  Material thickness is about 0.10 inches rather than 0.16
>specified in the service bulletin.
>-- Actuators were issued *without* the spherical bearing.
>-- I haven't pulled the right link, will do that tomorrow.
>Lancair offers refurb and powder coat of each link for $100, and new
>actuator parts with spherical bearings for $70 each, for a total of $340
>plus shipping for a full shipset; and they claim that with powder
>coating, the turnaround time is 2 weeks; without powder coating, 2 days.
>
>Note that retraction was unaffected with this level of cracking (I did a
>gear swing before taking everything apart).  Prob because one tab was as
>yet undamaged.
>
>Ross at Lancair Tech Support claims that the normal way to find out about
>a servcie bulletin is just to log in and check periodically; he doesn't
>know why some owners got a notice and others (me) did not.
>
>Charley Brown
>
>--
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