CESSNA 337 3M-4014 Sound And Vibration Damping Panels.

[Alainb]

Hello Guys,

Still on my process to find my perfect
337 turbo non presu.
stole kit
After 1974 model
Low time total
Low time engines and props
My budget : USD 150K

I have some possibilities. I would like to ask you about redone the insulation/sound proof in the cabin.

I found this product this product : 3M™ 4014 Sound And Vibration Damping Panels. https://www.aircraftspruce.com/pages...pingpanels.php

Can I have your advise on this product :

• the product really improve the noise ?
• of many m2 do I need to order ?
• other choice of product ?

Thanks

Alain

[n86121]

Where you can make it fit, more is better.
Thicker is better than thinner.
Doubled layers is better than one.
Cover everything and place you can that will not need maintenance access later on.

You could approximate M2
by taking ballpark rectangular dimensions
of the overhead area and both sides
and the back panel too!

Maybe double that one for two layers if possible.

Then buy 25% more,
so you will have it on scene while the interior is out.

If you ang get more delivered quickly,
then order more and throw it in,
without losing too much time waiting for more to arrive.

From my design experience,
having more of whatever you MIGHT need,
already on scene when you are in the middle of it
is usually more important than losing/wasting time waiting to get more delivered.

As I recall it was not terribly expensive per sqft.
Especially when compared to my time and down time.

[Alainb]

Originally Posted by n86121

Where you can make it fit, more is better.
Thicker is better than thinner.
Doubled layers is better than one.
Cover everything and place you can that will not need maintenance access later on.

You could approximate M2
by taking ballpark rectangular dimensions
of the overhead area and both sides
and the back panel too!

Maybe double that one for two layers if possible.

Then buy 25% more,
so you will have it on scene while the interior is out.

If you ang get more delivered quickly,
then order more and throw it in,
without losing too much time waiting for more to arrive.

From my design experience,
having more of whatever you MIGHT need,
already on scene when you are in the middle of it
is usually more important than losing/wasting time waiting to get more delivered.

As I recall it was not terribly expensive per sqft.
Especially when compared to my time and down time.

Thanks for your advises
Alain

[n86121]

I note your transition year is ‘74.

Yes
The fuel system does get simpler after 73.
Like a huge Cessna 172,
vs 4 tanks earlier.

Interestingly,
in the turbo C and D models
When using aux tanks
the excess (unused) fuel*
Goes back to the “manifold”
Right back to the engine!
NOT to the aux or mains.
So no guesswork!

When you have used 15 gals from aux
you have used 15 gals from aux
And no mystery fuel added to mains
Or overboard.

*I believe fuel pumps must deliver
150 % of max fuel engines might require.
For Engines that might use 20 gph, fuel system must deliver 30 gph
So at lower power lots of “excess” fuel from pumps
Has to go somewhere.

Also,
Having seen it up close at potomac.
I no longer desire the later model split door
Very “tunnel” like in person.

I have always liked and used my cargo door often.