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  #1  
Old 05-24-2021, 07:04 AM
bobg56 bobg56 is offline
 
Join Date: Nov 2018
Location: Peachtree City, GA
Posts: 177
Default Mounting Oil Pres. sender to firewall kit

I want to relocate my OP sender to firewall, I'm getting erratic readings from the engine vibration...is there a kit for this?...thanks
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  #2  
Old 05-24-2021, 07:52 AM
Bob Y Bob Y is offline
 
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Location: Piedmont, SC
Posts: 233
Default

See the kit in the bottom right corner.

http://www.aircraftspecialty.com/rv-12.html
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  #3  
Old 05-24-2021, 09:28 AM
bobg56 bobg56 is offline
 
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Location: Peachtree City, GA
Posts: 177
Default

No engine vib problems, carbs are in sync and prop balanced to .05....installing on firewall will fix problem of fluctuation ...my next question, is the engine threads metric or pipe? The old sender I have seems like 1/8 pipe thread but the kit is either for metric or pipe...
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  #4  
Old 05-24-2021, 04:23 PM
TS Flightlines TS Flightlines is offline
 
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Location: Ridgeland, SC
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The 912s had both versions, the NPT threaded version was for the older engines, the newer ones have metric straight threads.

Tom
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Tom Swearengen, TS Flightlines LLC, AS Flightlines
Joint Venture with Aircraft Specialty
Teflon Hose Assemblies for Experimentals
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RV7 Tail Kit Completed, Fuse started-Pay as I go Plan
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  #5  
Old 05-24-2021, 06:05 PM
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PaulvS PaulvS is offline
 
Join Date: Aug 2019
Location: Western Australia
Posts: 626
Default Pressure regulator

Quote:
Originally Posted by bobg56 View Post
I want to relocate my OP sender to firewall, I'm getting erratic readings from the engine vibration...is there a kit for this?...thanks
The erratic readings may be caused by a worn (VDO) oil sender and fluctuating oil pressure from the oil pressure regulator if it is the older ball type. The newer mushroom style pressure regulator will give steadier pressure including for a remotely mounted sender.
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  #6  
Old 05-24-2021, 08:53 PM
RFSchaller RFSchaller is offline
 
Join Date: Oct 2010
Location: Phoenix, AZ
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Was the VDO sensor ever used on the R-12 for oil pressure? My VDO fuel pressure sensor has hung in there for almost 10 years and 1100 hours. I had one Honeywell oil P sensor go bad and replaced it. Then the indication went erratic, so I replaced again only to find out it was a bad connection causing the erratic indication.
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  #7  
Old 05-26-2021, 07:10 AM
bobg56 bobg56 is offline
 
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Location: Peachtree City, GA
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When you say older engines, how old? My -12 is a 2010 model so the engine is about the same age I'm assuming. The current OP sender is a Honeywell type, would that be the pipe threaded style? I'll take it to my hardware store and see if it threads into a 1/8 pipe fitting I guess that would be my next thing to try...don't want to strip out any threads on the engine ...
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  #8  
Old 05-26-2021, 08:02 AM
TS Flightlines TS Flightlines is offline
 
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WAG i'd say it was NPT. Easy to tell---see tif the threads are tapered, or straight. Straight thread metric would use a crush washer as the sealing point.
Tapered threads seal themselves---with your favorite sealing compound.

Tom
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Tom Swearengen, TS Flightlines LLC, AS Flightlines
Joint Venture with Aircraft Specialty
Teflon Hose Assemblies for Experimentals
Proud Vendor for RV1, Donator to VAF
RV7 Tail Kit Completed, Fuse started-Pay as I go Plan
Ridgeland, SC
www.tsflightlines.com, www.asflightlines.com
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  #9  
Old 05-26-2021, 10:27 AM
bobg56 bobg56 is offline
 
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Location: Peachtree City, GA
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Its pipe threaded...thanks guys!
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