The Murphy Builders Site

I believe the h-stab reinforcement was the result of a number of Moose
using
the 2-blade V-530 prop & the M-14P radial reporting cracks at the outer
hinge bracket. Looking at your picture, Fred, and then examining what
appears to be at least a 0.125" 'L' reinforcement in the "official"
pictures
I'd say there are simply several ways to approach reinforcing this area to
prevent a potential problem.

I had 245 hours on my first Moose with no cracking whatsoever at this point
on the h-stab. When building a new h-stab, I chose to fabricate a 0.032"
6061 T6 big "U" that runs the whole length of the side of the h-stab and
picks up both the hinge area and the opposite area, per se, on the front
spar.

The real issue, IMHO, is twofold:
- put some reinforcement there--what you have is probably just fine
- regularly monitor this location during every preflight and especially, of
course, during your annual condition inspection.

Happy to send pictures of my reinforcement if you want to see them. Again,
however, I suspect yours is Ok "as-is."

Ted

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of Fred
Messinger (fredm)
Sent: Wednesday, December 16, 2009 4:08 PM
To: rebel-builders@dcsol.com
Subject: [rebel-builders] Moose QB Stabilizer tip rib bracket

Hi Guys,

Question on the moose stabilizer hinge doubler. I just uploaded a
picture
of the tip rib on my QB (2006) moose stab. In the manual, the part in
question is ST1008. In the manual, and in the service bulletin dated
11/04,
the part has 28 rivets in it. Mine only has twelve rivets and is about an
inch shorter than the one described in the manual and SB.

Also, there are 3 pictures in section SR-Moose (101) named:

stabmod1 - Official MAM Stab Hinge reinforce - 1
stabmod2 - Official MAM Stab Hinge reinforce - 2
stabmod3 - Official MAM Stab Hinge reinforce - 3

These pictures show an entirely different mod than what is in the SB and
what is on my stab.

So many options! ;-) What do you guys recommend?

Thanks,
Fred




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I believe the h-stab reinforcement was the result of a number of Moose
using
the 2-blade V-530 prop & the M-14P radial reporting cracks at the outer
hinge bracket. Looking at your picture, Fred, and then examining what
appears to be at least a 0.125" 'L' reinforcement in the "official"
pictures
I'd say there are simply several ways to approach reinforcing this area to
prevent a potential problem.

I had 245 hours on my first Moose with no cracking whatsoever at this

on the h-stab. When building a new h-stab, I chose to fabricate a 0.032"
6061 T6 big "U" that runs the whole length of the side of the h-stab and
picks up both the hinge area and the opposite area, per se, on the front
spar.

The real issue, IMHO, is twofold:
- put some reinforcement there--what you have is probably just fine
- regularly monitor this location during every preflight and especially,

course, during your annual condition inspection.

Happy to send pictures of my reinforcement if you want to see them.

however, I suspect yours is Ok "as-is."

Ted

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of Fred
Messinger (fredm)
Sent: Wednesday, December 16, 2009 4:08 PM
To: rebel-builders@dcsol.com
Subject: [rebel-builders] Moose QB Stabilizer tip rib bracket

Hi Guys,

Question on the moose stabilizer hinge doubler. I just uploaded a
picture
of the tip rib on my QB (2006) moose stab. In the manual, the part in
question is ST1008. In the manual, and in the service bulletin dated
11/04,
the part has 28 rivets in it. Mine only has twelve rivets and is about an
inch shorter than the one described in the manual and SB.

Also, there are 3 pictures in section SR-Moose (101) named:

stabmod1 - Official MAM Stab Hinge reinforce - 1
stabmod2 - Official MAM Stab Hinge reinforce - 2
stabmod3 - Official MAM Stab Hinge reinforce - 3

These pictures show an entirely different mod than what is in the SB and
what is on my stab.

So many options! ;-) What do you guys recommend?

Thanks,
Fred




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Hi Guys,

Question on the moose stabilizer hinge doubler. I just uploaded a
picture
of the tip rib on my QB (2006) moose stab. In the manual, the part in
question is ST1008. In the manual, and in the service bulletin dated
11/04,
the part has 28 rivets in it. Mine only has twelve rivets and is about an
inch shorter than the one described in the manual and SB.

Also, there are 3 pictures in section SR-Moose (101) named:

stabmod1 - Official MAM Stab Hinge reinforce - 1
stabmod2 - Official MAM Stab Hinge reinforce - 2
stabmod3 - Official MAM Stab Hinge reinforce - 3

These pictures show an entirely different mod than what is in the SB and
what is on my stab.

So many options! ;-) What do you guys recommend?

Thanks,
Fred




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wrote:

Fred,

Stab mod (1,2 & 3) listed in the SR Moose Section 101 are of the first mod
done to the stab to combat the cracking. The cost of machining of the
parts
was too much and another method was then designed.

In addition to the Stab mod (which is the same as the wing mod) the tip rib
was modified to give more strength in this area as well on the stab.

From what I can see from your stab picture, the mod you have is fine and it
looks like you have the newer tip rib there as well. IMHO you're good to
go.

Cheers,
Jeff


On Wed, Dec 16, 2009 at 3:08 PM, Fred Messinger (fredm) <
fredmessinger@gmail.com> wrote:

Hi Guys,

Question on the moose stabilizer hinge doubler. I just uploaded a
picture
of the tip rib on my QB (2006) moose stab. In the manual, the part in
question is ST1008. In the manual, and in the service bulletin dated
11/04,
the part has 28 rivets in it. Mine only has twelve rivets and is about

an

inch shorter than the one described in the manual and SB.

Also, there are 3 pictures in section SR-Moose (101) named:

stabmod1 - Official MAM Stab Hinge reinforce - 1
stabmod2 - Official MAM Stab Hinge reinforce - 2
stabmod3 - Official MAM Stab Hinge reinforce - 3

These pictures show an entirely different mod than what is in the SB and
what is on my stab.

So many options! ;-) What do you guys recommend?

Thanks,
Fred




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