Generator problems

[Jim Eubanks]

T gen motors when attaching pos lead to gen terminal and neg lead to housing. New fun products third brush plate and regulator cutout and no charge. Even ran a jumper across the cutout and still no charge. suggestions?

[RajoRacer]

Does it "motor" with the 3rd brush held up in the holder ?

[Jim Eubanks]

Not sure I understand what you mean here. How would I do that?

[Ron Patterson]

If you really have a FunProjects Voltage regulator installed and you "ran a jumper across the cutout" you no longer have a working voltage regulator.
That action will destroy the VR.

[JTT3]

Ron is totally right and helped me before I destroyed a Voltage regulator. If you only want to see if the generator will motor, assuming you have removed the generator from the T, take the regulator totally off and only have a bare generator. connect a negative jumper cable to the case of the generator and then touch the positive cable to the post. I should mention that the cables on the other end should be connected to a 6 volt battery. When you touch the positive cable to the post it should run like an electric motor. Don’t do this for long. If you do you could have even more issues.

[TRDxB2]

T gen motors when attaching pos lead to gen terminal and neg lead to housing. New fun products third brush plate and regulator cutout and no charge. Even ran a jumper across the cutout and still no charge. suggestions?

Not sure about the sequence you did. But since you verified that the generator ran like a motor, not sure if you need to repeat that with a bench test.
However, you say that you have "NEW" Fun Projects third brush plate and regulator cut-out - where/when did you get them. I don't see them for sale anywhere. Also t wouldn't hurt to verify that you have the regulator and not just a cut-out

[Jim Eubanks]

Yes it is a SP regulator. I still do not get that if the gen will motor, why it does not charge..............

[Ron Patterson]

Jim
A Model T Ford generator that will "motor" but "not charge" is not starting by itself wehn it first starts spinning.
This process is called "building up" is not commonly understood and must occur for the generator to start charging.
I included a description of the building up process in an article I wrote for the Ford Fix website.
Here is a link to the article: https://modeltfordfix.com/the-model-t-f ... patterson/
Read the article and correct whatever is preventing the building up process described from occuring. Common causes for a generator not building up are a high resistance short to ground in the field winding, brushplate brush holders shorted to ground, poor commutator brush contact upon the commutator, a very dirty brushplate with brush carbon dust causing a high resistance short to ground and Improper setting of the "generator "null point" can also prevent the building up process. I.E. Anything interferring with the very small amount of voltage being created by the armature during building up.

[Jim Eubanks]

Thanks Ron!!

[Ron Patterson]

Jim
What the heck is a "SP" Regulator?

[TRDxB2]

Jim
What the heck is a "SP" Regulator?

I believe its a typo since he said he had a Fun Projects regulator

[Jim Eubanks]

I want to thank all for the help on this and Rajo Racer for hitting it on the head. After "timing" the brush plate it worked fine and put out a lot of amps. The regulator is good, guess since the gen was not charging it did not fry it.