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  #11  
Old 04-13-2018, 10:14 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, 11:36 PM
rapid_ascent rapid_ascent is offline
 
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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, 02:45 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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2018 Donation Paid
RV-7 Fuselage in progress
* Rolled the Fuselage
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 04-17-2018, 12:16 AM
gasman gasman is offline
 
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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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  #15  
Old 06-22-2018, 04:30 PM
JDA_BTR JDA_BTR is online now
 
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Bought the part works great:

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  #16  
Old 07-01-2018, 01:13 AM
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RV-14E RV-14E is offline
 
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Another approach, which I did not develop but used and has been shared here on VAF in other posts in the past, can be found here:

http://rv-14a.blogspot.com/2016/12/a...re-switch.html


Last edited by RV-14E : 07-01-2018 at 10:24 AM.
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  #17  
Old 07-01-2018, 09:36 AM
Larco Larco is offline
 
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Another idea for an oil warning light using Vans switch.
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  #18  
Old 07-01-2018, 09:46 AM
EXflyer EXflyer is offline
 
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Quote:
Originally Posted by gasman View Post
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.
Wont happen you will have oil the air will go away over time and be replaced with.....OIL.
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