The Murphy Builders Site

Just a reminder to add the reinforcing plate joining ST-31 to the fin spar.

Good luck

Murray
REBEL 505



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on 10/5/02 8:23 PM, Murray Cherkas at cherkas@shaw.ca wrote:

Just a reminder to add the reinforcing plate joining ST-31 to the fin spar.

Murray:

Yes, I accomplished that MAM plans change.

I ASSumed (I am not an engineer) that the cracking and rivet popping stemmed
from tailwheel ground side loading and not air loads.

Since my Rebel is going immediately to amphib floats, I ASSumed that the
FUS-30 Wayne doubler was not necessary. Am I correct on this Wayne?

Thanks for the "heads up" Murray . . .

Terry Dazey
Rebel 662
Sumner, Washington USA




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WRONG ASSUMPTION!!!

The Fus-31 to tail post modification/doubler and the subsequent SB
issuance by MAM was my doing. It is not from tailwheel operations
what so ever and the cracking rivet shear is STRICTLY from air loads!!!!

The Fus-30 doubler is to handle tail wheel loads!

Wayne


On 10/11/02 10:59 AM, DAZEY@EARTHLINK.NET wrote to MURPHY-REBEL:

-> on 10/5/02 8:23 PM, Murray Cherkas at cherkas@shaw.ca wrote:
->
-> > Just a reminder to add the reinforcing plate joining ST-31 to the fin
spar.
-> >
-> Murray:
->
-> Yes, I accomplished that MAM plans change.
->
-> I ASSumed (I am not an engineer) that the cracking and rivet popping stemmed
-> from tailwheel ground side loading and not air loads.
->
-> Since my Rebel is going immediately to amphib floats, I ASSumed that the
-> FUS-30 Wayne doubler was not necessary. Am I correct on this Wayne?
->
-> Thanks for the "heads up" Murray . . .
->
-> Terry Dazey
-> Rebel 662
-> Sumner, Washington USA
->





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Terry, wrong assumption if you are talking about the cracking of Fus-31
and the three post rivets shearing. I created this SB that MAM posted
2 years later and it is STRICTLY air loads that cause this FUS-31 to tail
post "failure".

Wayne


-> Yes, I accomplished that MAM plans change.
->
-> I ASSumed (I am not an engineer) that the cracking and rivet popping stemmed
-> from tailwheel ground side loading and not air loads.
->
-> Since my Rebel is going immediately to amphib floats, I ASSumed that the
-> FUS-30 Wayne doubler was not necessary. Am I correct on this Wayne?
->
-> Thanks for the "heads up" Murray . . .
->
-> Terry Dazey
-> Rebel 662
-> Sumner, Washington USA
->





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wayne.o'shea@dcsol.com wrote:

Terry, wrong assumption if you are talking about the cracking of Fus-31
and the three post rivets shearing. I created this SB that MAM posted
2 years later and it is STRICTLY air loads that cause this FUS-31 to tail
post "failure".

Hello Wayne: What I was trying to get at was that I had accomplished your FUS-31
horizontal bulkhead to post Service Bulletin, but I did not accomplish the FUS-30
double tail wrap because the airplane will not see any tailwheel time. It is going
straight to amphibs.

Understood, the FUS-31 is for airloads (past rivet popping and cracks) and the
FUS-30 is for "bullet proofing" for tailwheel side loads.

As usual . . THANKS for keeping things (me) straight!

Terry Dazey
Rebel 662





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