Airframe mods

Mods, approval, 337's, STC's, fun with the Feds.
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Tracey
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Airframe mods

Post by Tracey »

Hi all, i'm getting ready to start a recover and will be adding tail grab handles, skylight, sholder belts, and steel stringers. Are there any mods to the airframe i need to do or would be recommended while the covering is removed?
72' M-4 220

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andy
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Post by andy »

If you're ever going to put it on floats, this would be the time to have the rear attach points welded on.
Andy
1986 MX7-180
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donknee
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Post by donknee »

There may be some airframe reinforcement at the rear door also, for the seaplane upgrade....Jeremy would know. That would be a good idea for future use, resale,etc.
1976 M5-235-C

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Duane
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Post by Duane »

There are 2 prints that dictate the fuselage mods for the floatplane reinforcements. 9001F sh 1 and sh 2.

Tracey
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Post by Tracey »

Thanks. The plane was on floats at one time according to log books but I dont see any thing that look like float mounts. I will have to ad them to the list.
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donknee
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Post by donknee »

Thanks Duane! That was a fast response! :D
1976 M5-235-C

Tracey
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Post by Tracey »

Does anyone have a picture of the rear attach points or know where i can find one?
72' M-4 220

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maules.com
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Post by maules.com »

The rear attach points for earlier Maules come with the floats to be used.
The float plane fuselage re-inforcement tubing is what you are looking for and that is what Duane is referring to re the drawings.
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Post by Tracey »

Now i get it.. So Since it was on floats at one time it would have the reinforcing tubing or could someone put floats on without the reinforcement in place?
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maules.com
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Post by maules.com »

Someone could have mounted floats without the reinforcement.
There is a retrofit reinforcement kit that requires welding in some U channel stiffeners plus an external front mount carry through tube.
Jeremy
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Tracey
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Post by Tracey »

Ok, so i would call maule for the drawing right? How much does a drawing usually cost?
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Duane
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Post by Duane »

Tracey, If you send me a email to the below address, I can send them to you in either .pdf or .tif format.

Thanks Jeremy, I probably should have clarified that a little better.

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Chris in Milwaukee
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Post by Chris in Milwaukee »

Duane wrote:There are 2 prints that dictate the fuselage mods for the floatplane reinforcements. 9001F sh 1 and sh 2.
Apologies for reviving this old thread. Do later aircraft ('93 MX-7-180A for me) have this incorporated into the airframe, or would have been an option during build time?

It's probably obvious since these two drawings on the parts CD are in the "Optional Accessories Group" section. But thought I'd ask nonetheless.

Thanks!
Chris
Christopher Owens
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Post by maules.com »

Chris, your airplane is re-inforced.
The weld and tube requirement is for M4.
The other mention of weld on brackets is and was an option for mounting floats. Some mount with clamp/bolt on brackets and some mount to rear welded brackets.
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Chris in Milwaukee
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Post by Chris in Milwaukee »

Great to know. I was thinking that this would be a really expensive/extensive update!

Research shows that Wips use a bolt-on bracket, which is convenient.

Thanks for the info.
Christopher Owens
1993 MX-7-180A
Members: AOPA EAA VAA

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