' I am not personally familiar with the electronic gauges. My only thought would be to replace the oil pressure source with an air pressure line. Of course, not knowing where and how your oil pressure system in installed, that could be a dumb idea. If it was workable, at least you could check to see if the electronic system is working without running your motor. What would be nice about that, if there is an air leak, you wouldn't be making a big mess.My brain isn't working very well today. I have been smelling smoke from the California forest fires for the last couple of weeks, and it is finally getting to me. Between 6,000 ft elevation and smoke, not good. Visibility has been as low as 3 miles. It is close to being IFR in broad day light.
Sorry, Bob
On ?Thursday?, ?August? ?9?, ?2018? ?01?:?41?:?56? ?PM? ?PDT, 'Jan P. Hedberg'
jhed9253@aol.com [fairchildclub] wrote:
Just returned-read my message. It should read that the voltage drops to less than a volt. Starter works but electric instruments don’t. Aircraft has a field approved Westec gage and I get no oil pressure indication. Really don’t want to start it if I have no oil pressure indication. I have oil at the pressure pick up but...Something isn’t right.
Sent from my iPad
On Aug 8, 2018, at 8:19 PM, Robert Etter
robertetter@ymail.com [fairchildclub] wrote:
The only thing that comes to mind is when you have the Master switch on you have no load at that time. When you add the Mag Switch to the BATT position, you engage the Master solenoid to the battery circuit load. If you happened to forget and left something else turned on, that may cause the battery voltage to be even lower. It really wouldn't surprise me that much going from open circuit, and no load, to adding some load to the battery circuit and have the voltage to drop. If you add more load to the battery, you should see an increase in the voltage drop. When you have the motor running and the alternator/generator putting out voltage, the voltage should go back up to what ever the charging circuit is set for.I guess you really don't have anything to worry about. Solenoids are quite thirsty when it come to electricity.To me it is basic electronics. I did my basic electronics in 1962 and have dealt with stuff all the way from useful signals in micro Amps range all the way to 200 thousand Watts of RF power. Boy, that will cook your lunch.Good Luck, in case you need it.
Bob
On ?Wednesday?, ?August? ?8?, ?2018? ?12?:?06?:?11? ?PM? ?PDT, 'Jan P. Hedberg'
jhed9253@aol.com [fairchildclub] wrote:
I asked a wiring question a few months ago. Master battery switch and mag battery switch and wired in series. Now with the master batt switch on I have 14 volts on the main buss. When I turn on the mag battery switch on the buss voltage drops a less than a volt. That normal?
Jan
N 81265
Sent from my iPad
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