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Old 01-01-2021, 07:02 PM
funflying funflying is offline
Join Date: Oct 2006
Location: arvada, co
Posts: 532

Thanks Paul
And yes those numbers are considered within specs so I’m going to continue to monitor but I guess since I’ve been focusing on the oil pressure I was concerned when I didn’t see a rise, or much of a rise, moving from low RPM to run up.

Also have had another person mention the replacement of the ball with the mushroom(cone) on the pressure regulator spring. Didn’t know about the shim so thanks for the information.
Patrick Claar
Arvada, CO BJC
RV12, #401, Flying 2013, N612PC
RV6, 1996-2010 sold

Last edited by funflying : 01-01-2021 at 07:10 PM. Reason: Added information
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Old 01-01-2021, 09:35 PM
Mich48041 Mich48041 is offline
Join Date: Apr 2008
Location: Riley TWP MI
Posts: 3,457

According to my notes, 3.2 volts on Dynon D-180 EMS Pin 6 = 30psi.
Disconnect the wht/yel wire from the oil pressure sender and connect it to
3.2 volts positive (two flashlight batteries in series). Connect the negative
side of the 3.2 volts to ground.
Joe Gores
RV-12 Flying
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Old 01-01-2021, 10:08 PM
SeattleAviator SeattleAviator is offline
Join Date: Nov 2020
Location: Seattle, WA
Posts: 18
Default Oil Pressure Sensor

check to be sure you have an exact replacement. A quick check on-line indicates that this sensor was changed on newer Rotax 912 engines. Perhaps you have a newer style sensor that is not compatible with the Dynon EMS. Dynon can probably also provide some guidance. I have had newer fuel sensors on the 912 not work correctly with the EMS.
Analog Man Living in a Digital World
Donation December 2020
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Old 01-03-2021, 10:49 PM
RFSchaller RFSchaller is offline
Join Date: Oct 2010
Location: Phoenix, AZ
Posts: 3,349

Mine has always sat in the middle of the green band at about 50 psi +/-5 except when my oil pressure sensor went belly up.
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Old 07-31-2021, 02:06 PM
HansLab HansLab is offline
Join Date: Jan 2015
Location: Netherlands
Posts: 182
Default washer could help

Rotax states in there HeavyMaintenanceManual concerning Lubrication that 'washer under the spring/ball combination is only needed when after changing [items] a low oil pressure is found'
So: a washer might solve your problems. Sound logic, too?
Hans Labruyere
build & sold project Kitfox IV
Project bought & flying RV12 #120742
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Old 08-02-2021, 07:55 AM
bobg56 bobg56 is offline
Join Date: Nov 2018
Location: Peachtree City, GA
Posts: 278

I have the Honeywell transmitter installed on the oil pump housing, I've been through 3 so far in about 400 hours so I bought a remote mount kit and installed it on firewall plus switched to the cone style pressure relief. Better indication, less fluctuations.
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