The Murphy Builders Site

I saw pictures of someone that reinforced the end rib on the horizontal
stabilizer of the moose in the archives.Was the outboard rib made
with 4130 or stainless steel ? also did you reinforce the spars that
is attached to it .

Bill - Moose 244

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I saw pictures of someone that reinforced the end rib on the horizontal
stabilizer of the moose in the archives.Was the outboard rib made
with 4130 or stainless steel ? also did you reinforce the spars that
is attached to it .

Bill - Moose 244

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Thanks for the heads up on the weak points.I have M-14 360hp that
will probably go on Montana amphibs.I am going to contact MAM
regarding the ADs to see if they will supply parts.I have a concern
about using avex on all the stucture do to M-14 vibration, avex are
much faster to install but after 800 hours will the aircraft still
be tight.Am I being to anal??

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com]On Behalf Of
Ryan Mowat
Sent: Monday, November 01, 2004 10:26 PM
To: rebel-builders@dcsol.com
Subject: Re: Moose Stab.

Bill

Concerning the moose:

There was a couple of things that I had fixed before painting my
plane after 10 months and 120 hours. One was the ribs at the end of
the stabs as the strakes attach to these and they were cracked (I am
on floats with radial). The factory punched out some new ones for me
out of thicker material and extrusions were fashioned to support the
new rib. This was also true for the outter ribs on both wings,
there was small cracks in the outer ribs where the ailerions
attach. The cause is the tight radius of the thin rib being pinched
tight - again an extruision was fashioned and the radius removed.
These cracks are not isolated to float or radial use, I have
confirmed them in other non float equipmed flat head planes aswell.
Should be a factory AD but I have not seen one. The other area that
has been reported is the trim tab on elevator, some have developed
cracking in the skin - I have installed a fix provided by factory
even though mine did not show any issues. Since I am new to the
email list I might as well list all the problems - the V-Brace on
flat head and radials break - contact Brian for a better design (or
Robin as Brian is not aviable). It is possible to install after
wings are on - but much better before wings are installed. Some have
reported issues with the flap tube rivets working loose - although
I have not seen this yet. I should also not that one builder
reported rudder cable scuffing where the cable passes through the
fire wall - some builders have fixed this issue by placing the
pulleys aft of the fire wall. Care should be given to provide
proper passage of the cable through the firewall to avoid cable damage.

Ryan, CGASR.

On Mon, 1 Nov 2004 20:54:32 -0500, Laura P wrote

I saw pictures of someone that reinforced the end rib on the horizontal
stabilizer of the moose in the archives.Was the outboard rib made
with 4130 or stainless steel ? also did you reinforce the spars that
is attached to it .

Bill - Moose 244

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