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  #11  
Old 04-13-2018, 09:14 PM
JDA_BTR JDA_BTR is online now
 
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There are plenty of reasons to want it....
But is that elbow the one I want?

I did like the spacers idea. but then its hard to get under/behind the switch for connections.
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  #12  
Old 04-13-2018, 10:36 PM
rapid_ascent rapid_ascent is offline
 
Join Date: Mar 2008
Location: Dublin, CA
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I don't think that elbow is going to space the switch far enough away from the pressure transducer. I think you need a nipple and a female elbow., but I don't have the parts yet to confirm.
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  #13  
Old 04-16-2018, 01:45 PM
rapid_ascent rapid_ascent is offline
 
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A little too much time commuting on the train I guess to think about future steps. I realize this is slightly off topic, but not too far.

Do these transducer lines that are connected to the manifold need to be purged to get rid of the air? It seems like they should be, but then I was wondering how that was done if you need to put the plug into the manifold with thread sealant.
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Ray Tonks
2018 Donation Paid
RV-7 Fuselage in progress
* Fwd Fuselage Complete
* Mid Fuselage Complete
* Aft Fuselage Complete
RV-7 SB Wings
* Both Wings fully skinned
* Fuel Tanks Complete - No leaks finally
* Ailerons Complete
* Flaps Complete
RV-7 Empennage - Complete (a little fiberglass work left)
Vans Training Kit # 2 - Complete
Shop Setup - In Progress (Gathering Tools, Never Complete)
RV-7 Preview Plans
Vans Training Kit #1 - Complete
EAA Sheet Metal Class - Complete
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  #14  
Old 04-16-2018, 11:16 PM
gasman gasman is offline
 
Join Date: Mar 2007
Location: Sonoma County
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Quote:
Originally Posted by rapid_ascent View Post
A little too much time commuting on the train I guess to think about future steps. I realize this is slightly off topic, but not too far.

Do these transducer lines that are connected to the manifold need to be purged to get rid of the air? It seems like they should be, but then I was wondering how that was done if you need to put the plug into the manifold with thread sealant.
Good question..... Pressure is pressure.. It doesn't matter if it's water, gas, oil or air. They do make the transducers compatible with the product being measured. But an oil pressure transducer will measure air with no problem. It will compress, but only to the same pressure applied.

Actually, air trapped in the line will cushion pulses from pumps and that's a good thing for longer transducer life. Also, the next time you remove the fitting, you will have a clean disconnect.
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