RE: Europa-List: Re: Fire proof barrier with Jabiru Engine

[Bud Yerly <budyerly@msn.com>]

I totally agree Nigel,

It is just added insurance against cracking.


Dave Conrad and I just finished his.  Reaming the lower tube requires an ex
tension on the reamer.  Dave bought a hand reamer square end so we could fi
t it to a =BD inch extension and drive it with a drill.  Dave elected to st
op at the bolts.  I think I would remove the bolt and drill the insert as w
ell in the future.


Regards,

Bud Yerly


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________________________________
From: owner-europa-list-server@matronics.com <owner-europa-list-server@matr
onics.com> on behalf of Nigel Graham <nigel_graham@m-tecque.co.uk>
Sent: Sunday, January 13, 2019 4:46:10 PM
Subject: Europa-List: Re: Fire proof barrier with Jabiru Engine

.uk>

My personal opinion is =9Cyes=9D. The reinforcing tubes supplie
d by the factory as part of the Mod 72 kit were about 100mm (4.0=9D) 
long as I remember. This was intended to span the area known to fail on the
 top two tubes.

The latest spate of failures is occurring further inboard on the lower tube
s. For anyone with a pre 2007 frame, I would suggest reinforcing all four l
anding gear mounting tubes for their full length. After January 2007, the f
actory produced the LG01 frame with thicker walled top tubes, so in this ca
se, only the lower tubes would need reinforcing.

 I am currently overhauling a mono and am actually in the process of writin
g up this mod to gain approval from our own regulating authority.

I notice that you fly a conventional gear. Since the landing load paths are
 completely different, I would think that you are highly unlikely to suffer
 from fractured lower tubes, so this discussion is probably academic in you
r case.

Nigel


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