The Ford Barn

[email protected] · 03-31-2022, 11:48 AM

The ammeter moves erraticly from + to -, sometimes pauses briefly around 0 then right back to dancing left and right. Accelerating doesn't seem to make much difference. I have moved the third brush and that didn't help either. Any and all ideas are welcome.

nkaminar · 03-31-2022, 12:32 PM

Check for loose electrical connections everywhere including in the generator. Make sure the brushes are making good contact with the commutator.

gdmn852 · 03-31-2022, 02:03 PM

Was an issue awhile back about repro amp meters , also check electric connectors as mentioned in previous post.

GRutter · 03-31-2022, 05:28 PM

Also check the voltage cut-out if it's an original or point-style reproduction (as opposed to the newer diode style cut-outs). Be sure the ampmeter does not show discharge with the engine off

eagle · 03-31-2022, 07:54 PM

Put a good quality voltmeter on the battery and see what the voltage there is, also on the cutout, see what its doing. As others have said, check all connections for cleanliness and tightness.

rotorwrench · 04-01-2022, 03:55 PM

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We need to know how the power generating system is set up. OEM style generator with a diode or cut out is one thing but an alternator conversion is another. It also helps to know if the car has a modern replica 20 or 30 amp indicator or does it still have an old original amp meter?

03-31-2022, 11:48 AM	#1
[email protected] Junior Member Join Date: May 2019 Location: ILLINOIS Posts: 14	'tis a puzzelment The ammeter moves erraticly from + to -, sometimes pauses briefly around 0 then right back to dancing left and right. Accelerating doesn't seem to make much difference. I have moved the third brush and that didn't help either. Any and all ideas are welcome.

03-31-2022, 12:32 PM	#2
nkaminar Senior Member Join Date: Jan 2012 Location: Western North Carolina Posts: 3,899	Re: 'tis a puzzelment Check for loose electrical connections everywhere including in the generator. Make sure the brushes are making good contact with the commutator. __________________ A is for apple, green as the sky. Step on the gas, for tomorrow I die. Forget the brakes, they really don't work. The clutch always sticks, and starts with a jerk. My car grows red hair, and flies through the air. Driving's a blast, a blast from the past.

03-31-2022, 02:03 PM	#3
gdmn852 Senior Member Join Date: Feb 2019 Location: Erie Pa Posts: 691	Re: 'tis a puzzelment Was an issue awhile back about repro amp meters , also check electric connectors as mentioned in previous post.

03-31-2022, 05:28 PM	#4
GRutter Senior Member Join Date: Sep 2017 Location: Mint Hill, North Carolina Posts: 386	Re: 'tis a puzzelment Also check the voltage cut-out if it's an original or point-style reproduction (as opposed to the newer diode style cut-outs). Be sure the ampmeter does not show discharge with the engine off

03-31-2022, 07:54 PM	#5
eagle Senior Member Join Date: Aug 2011 Location: Eagle Bend, MN Posts: 2,025	Re: 'tis a puzzelment Put a good quality voltmeter on the battery and see what the voltage there is, also on the cutout, see what its doing. As others have said, check all connections for cleanliness and tightness. __________________ "There are some that can destroy an anvil with a teaspoon and shouldn't be allowed to touch anything resembling a tool."

04-01-2022, 03:55 PM	#6
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 16,425	Re: 'tis a puzzelment Sponsored Links (Register now to hide all advertisements) We need to know how the power generating system is set up. OEM style generator with a diode or cut out is one thing but an alternator conversion is another. It also helps to know if the car has a modern replica 20 or 30 amp indicator or does it still have an old original amp meter?