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Mitchell fuel gauge.

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ftyoder(at)yoderbuilt.com
Guest

Posted: Thu Apr 27, 2017 4:16 pm Post subject: Mitchell fuel gauge.

I have a Mitchell  fuel gauge that read 0-15 lbs and I need it to read 0-7 lbs. My fuel pressure is  3/4 to 3 lbs. Is there a way to to make the gauge indicate half of the value  across the 0-15 scale? Mitchell doesn't sell a 0-7 lb gauge.

 Thanks for any  help.

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nuckolls.bob(at)aeroelect
Guest

Posted: Thu Apr 27, 2017 5:05 pm Post subject: Mitchell fuel gauge.

At 07:15 PM 4/27/2017, you wrote:

  	  Quote: 	
		   I have a Mitchell fuel gauge that read 0-15 lbs and I need it to read 0-7 lbs. My fuel pressure is 3/4 to 3 lbs. Is there a way to to make the gauge indicate half of the value across the 0-15 scale? Mitchell doesn't sell a 0-7 lb gauge.

 Thanks for any help.

 	


   I presume you're talking about gage with

   and electronic transducer at the engine

   and a 'specialized' meter at the panel.



   It's not difficult to re-scale some instruments

   and tailor them to other signal sources.

   Here's a loadmeter I used to sell that was

   made from a generic, 1 milliamp DC instrument.



   



 

   These were easy to take apart, glue new scale

   placards onto the existing plate, paint the 

   pointer and put it back together.



   Then I tailored matching shunts for any value

   of 100% from 10 to 100Amps.



   Your task depends on what kind of transducer/

   meter configuration you have. It MIGHT be

   so simple as to reduce the value of a calibration

   resistor such that the instrument reads 2x real

   pressure.



   If I were starting from scratch, I'd get a transducer

   like this 



  http://tinyurl.com/m2noxox



   and fit one of the meters like I showed above with

   a 0-5 psi scale plate. Then, a handful of jelly

   bean components would provide 5v regulated to

   power the instrument and set scale-factor +

   offset to match the transducer. Your Mitchell

   hardware MIGHT be so adaptable but I 

   can't offer more concrete information without

   having the parts on the bench to see how they

   dance with each other.



   Maybe someone on the List has dug into Mitchell's

   electro-magic . . .

  



 

 

   Bob . . .

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