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  #1  
Old 03-28-2020, 07:35 AM
Larry DeCamp's Avatar
Larry DeCamp Larry DeCamp is offline
 
Join Date: Apr 2010
Location: Clinton, Indiana
Posts: 1,051
Default CIES fuel sender gasket question ?

My Cies senders are impressive, with billet machined/anodized components and absolutely friction free. However, it comes with a rubber gasket. There are archives referencing leaky rubber Vans sensors and recommendations to eliminate the gasket and substitute proseal. That works well !
Cies would not supply a rubber gasket if they didn?t feel they work, BUT, rubber is rubber and compression sets. So, does anyone have experience with the Cies units to share ?
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Larry DeCamp
RV-3B flying w/7:1 0320 / carb / Pmags / Catto 3b / digital steam
RV-4 fastback w/ Superior roller 360/AFP/G3X/CPI/Catto3b
Clinton, IN
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  #2  
Old 03-28-2020, 01:07 PM
larosta larosta is online now
 
Join Date: Dec 2010
Location: Redlands, CA
Posts: 180
Default

When we installed CiES fuel sanders in another aircraft we ran into issues with the gasket height stack up. We called CIES and they laser cut gaskets out of fiber gasket material for us. I might suggest that you consider staying with the same installation method that is commonly used by RV builders. It seems to work and at the end of the day the CiES sender is not different from a resistance sender as far a mounting and sealing go.

Just out of curiosity, are you using the single sending unit in each tank or the two senders per tank that CiES recommends because of the RV wing dihedral?

- larosta
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  #3  
Old 03-28-2020, 02:58 PM
Larry DeCamp's Avatar
Larry DeCamp Larry DeCamp is offline
 
Join Date: Apr 2010
Location: Clinton, Indiana
Posts: 1,051
Default Larosta

Thanks for the input. Just one sensor per tank. My main objective was to know ( with certainty) what is left near empty. Since Vans senders yield varying results, I installed Aircraft Extras low level sensors in my -3, and the no alcohol MoGas ate the sensors and they leak.
So, for my -4 project, I said ENOUGH !, and ordered CIES based on their reputation . One option is to use fuel lube on the rubber, but Proseal only (no rubber) is the proven path.
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Larry DeCamp
RV-3B flying w/7:1 0320 / carb / Pmags / Catto 3b / digital steam
RV-4 fastback w/ Superior roller 360/AFP/G3X/CPI/Catto3b
Clinton, IN
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  #4  
Old 03-28-2020, 06:57 PM
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MS19087 MS19087 is online now
 
Join Date: Nov 2006
Location: West Chester, PA
Posts: 737
Default Belts and suspenders

On my -14 I used the gasket provided. They use this on all of their Cirrus installations. However I did proseal the perimeter and all of the screws. I?m a long way from flying. I think it is sealed very well.
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RV-9A; Built, Flown & Sold
RV-14A; Building
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  #5  
Old 03-28-2020, 08:14 PM
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Bill.Peyton Bill.Peyton is offline
 
Join Date: Sep 2009
Location: St. Louis, MO
Posts: 1,821
Default

I was looking at the cies website but did not see any mention of Van?s aircraft. What model did you purchase for the 14
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N37CP
First Flight Oct 2012
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  #6  
Old 03-28-2020, 08:41 PM
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MS19087 MS19087 is online now
 
Join Date: Nov 2006
Location: West Chester, PA
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Default You need to call them

Or email Andy. andy.fackrell@ciescorp.com with your Van’s specific requests.
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RV-9A; Built, Flown & Sold
RV-14A; Building
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  #7  
Old 03-29-2020, 07:55 AM
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Jeff Vaughan Jeff Vaughan is offline
 
Join Date: Jan 2005
Location: West Chester, Pa
Posts: 595
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I did not use the gasket on the installation on my 12 tank. I just followed Vans plans which called for sealant. So far so good after about 10 hours of flying.
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RV 12 N237VW ELSA
RV 7A N561EV Sold
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