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Supporting Owners, Builders and Pilots of the Thorp T-18 and its variants.
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Jeff J
 Post subject: Re: Tank vent/ram air
PostPosted: Thu Mar 26, 2020 5:58 pm 
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Joined: Wed Aug 31, 2016 8:18 am
Posts: 516
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Location: eastern OK
The CJ3A fuel cap I am using is vented. I don’t recall if the thermos style “squeeze the rubber until it bulges” cap I had was or not. It wouldn’t hold anymore so I replaced it with something that had tabs to hold it in place. The Willys cap was the only thing I could find that was an easy retrofit.

As far as vapors in the cockpit, the builder of my airplane built a scupper drain that does a pretty good job of keeping overflows and vapors out of the cockpit. If I find myself on the ground hanging from my harness, I doubt my hair will be getting a gasoline wash. What little dribbles past the cap should just go out the access panel unless I crash in a water hole.

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Thorp T18
O-320-B3B (160 HP)
68x74 Sterba Propeller

"The joke in aviation is, 'If you want to make a million, you'd better start with £10m.' " -Bruce Dickinson


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Jeff J
 Post subject: Re: Tank vent/ram air
PostPosted: Fri Mar 27, 2020 12:06 pm 
Sr. Member
Sr. Member

Joined: Wed Aug 31, 2016 8:18 am
Posts: 516
Images: 0
Location: eastern OK
The PA-23 fuel cap I replaced is vented. I would not use any cap held in place solely by compressing rubber after my experience with this cap. When I was searching for a replacement I found out there are several caps that look different but operate exactly the same so I won’t use them. Just my opinion.


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_________________
Thorp T18
O-320-B3B (160 HP)
68x74 Sterba Propeller

"The joke in aviation is, 'If you want to make a million, you'd better start with £10m.' " -Bruce Dickinson
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 Profile Personal album  
 
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