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  #1  
Old 10-11-2008, 09:19 AM
mlwynn mlwynn is offline
 
Join Date: May 2005
Location: San Ramon, CA
Posts: 407
Default CAT, SCAT, CEET, SCEET

Hi all,

I am working on my FWF installation. I have read Aircraft Spruce's summary of the differences between the abolve flexible ducting. What I can't figure out is, what should I use for my heat muff to cabin duct, blast tubes, etc. So, is it a choice of black over red? I assume that the CEET and SCEET, which are two ply thick, is overkill for the short RV runs. So it comes down to CAT vs SCAT.

Thoughts?

Regards,

Michael Wynn
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  #2  
Old 10-11-2008, 10:09 AM
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az_gila az_gila is offline
 
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Location: 57AZ - NW Tucson area
Posts: 10,011
Exclamation SCAT is the stuff...

...to use forward of the firewall. This is pretty standard in certified planes.

The 500F rating vs. the 300F rating of CAT is the deciding factor.

Inside the cockpit area, then CAT is OK.

My RV vent kit came from Vans with black tubing still containing the label from the aviation department of JC Whitney....
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  #3  
Old 10-11-2008, 11:10 AM
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N941WR N941WR is offline
 
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Default

Quote:
Originally Posted by az_gila View Post
...Inside the cockpit area, then CAT is OK.

My RV vent kit came from Vans with black tubing still containing the label from the aviation department of JC Whitney....
I found some stuff at the local auto parts store that is "custom made" for Van's RV's, just read the label:
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Last edited by N941WR : 10-11-2008 at 11:36 AM.
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  #4  
Old 10-11-2008, 11:31 AM
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jferraro17 jferraro17 is offline
Opulence, I has it...
 
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Talking

Bill-

LOL!
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  #5  
Old 10-11-2008, 02:28 PM
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osxuser osxuser is offline
 
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Default

Please don't use Cat for anything. After a few years moisture gets trapped between the tubing and the aluminum (Any aluminum it touches) which starts corrosion between that and the steel spring that is in the tubing. I wouldn't consider using anything that isn't Silicone embedded (the S is Scat).
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  #6  
Old 10-11-2008, 10:47 PM
mlwynn mlwynn is offline
 
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Location: San Ramon, CA
Posts: 407
Default Scat it is

Thanks for the insights

Michael Wynn
RV 8 FWF
San Ramon, CA
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  #7  
Old 10-12-2008, 01:01 AM
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az_gila az_gila is offline
 
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Question Confused...

Quote:
Originally Posted by osxuser View Post
Please don't use Cat for anything. After a few years moisture gets trapped between the tubing and the aluminum (Any aluminum it touches) which starts corrosion between that and the steel spring that is in the tubing. I wouldn't consider using anything that isn't Silicone embedded (the S is Scat).
...about your comments....

Assuming a low temp application, SCAT tubing also has exposed steel wires on it's interior surface, so why wouldn't it corrode in the circumstances you mention above? If anything, the silicone would hold moisture in more efficiently....

SCAT tubing showing exposed wire....



I believe the silicone embedding (the "S") is in the cloth, not the wire....
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Last edited by az_gila : 10-13-2008 at 10:19 AM. Reason: can't spel
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  #8  
Old 10-12-2008, 04:07 AM
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carguy614 carguy614 is offline
 
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Default copper coating

Gil..
The wire used inside of the SCAT tube is copper coated, just like MIG welding wire, and resists corrosion. It is also a nicer product to use for the air vents. I have used the vinyl wire stuff on auto applications a few times and was amazed at how quickly it deteriorated. for the couple of extra bucks it costs to install SCAT, I think it is a good idea.

2 cents,
Chris
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  #9  
Old 10-12-2008, 10:31 AM
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az_gila az_gila is offline
 
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Question But... are we comparing...

Quote:
Originally Posted by carguy614 View Post
Gil..
The wire used inside of the SCAT tube is copper coated, just like MIG welding wire, and resists corrosion. It is also a nicer product to use for the air vents. I have used the vinyl wire stuff on auto applications a few times and was amazed at how quickly it deteriorated. for the couple of extra bucks it costs to install SCAT, I think it is a good idea.

2 cents,
Chris
....SCAT to CAT like the original post said, or are we comparing SCAT to JC Whitney stuff? - which is a vastly different proposition....

What is the wire compostition/plating of real CAT hose, which oxuser did not like to use? Most likely, it is the same as the SCAT tubing, but I can't verify...

Perhaps oxuser really meant to say "don't use the automotive stuff", which has nothing to do with silicone content....
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Half completed RV-10 QB purchased
RV-6A N61GX - finally flying
Grumman Tiger N12GA - flying
La Cholla Airpark (57AZ) Tucson AZ
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  #10  
Old 10-13-2008, 04:37 AM
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carguy614 carguy614 is offline
 
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Default scat

That's probably right Gil. I may not be comparing apples to apples...
Regards,
Chris
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