Re: Farmall 400 fluctuaing voltages

Posted by Janicholson on September 03, 2006 at 20:25:40 from (66.173.50.44):

In Reply to: Re: Farmall 400 fluctuaing voltages posted by JaredFarmall400 on September 03, 2006 at 20:09:16:

An electronic tach is sensitive to stray voltage (as you have seen). If you are using a digital volt meter, it will not average raw "old iron" voltages very well, a needle type is easier to use on these.
I would do two things.
I would change the plug wires to Magnetic supression wires, (sorensen brand or other quality line) they have real wire in them but it is wound into a coil to suppress the radio noise. (they are very good and do last.)
Next I would use shielded wire for the tach leads and ground the shield. this also keeps stray voltage from the system. A static suppression condenser on the output of the generator to ground will help as well (even an old regular condenser from points will work if it is good)
These will more than likely keep it clean and working like it should. Best of luck, JimN

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