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Thread: What is This?

  1. #1

    What is This?

    I have an electrical device that I cannot indentify. It has Gray & Davis on it and is called a dynamo. It is rated 6 volts and 10 amps. It was my grandfather's and passed on to my dad and now me. My dad thought it was from a Packard but my grandfather owned everything from a Model A to a Studebaker truck. I will attach a couple of photos. If anyone can help me please do so. Thanks Bruce
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    Last edited by turbo15479; October 28th, 2010 at 11:43. Reason: typo

  2. #2
    Senior Member-1951 Model Shop Rat's Avatar
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    Oct 2004
    St. Albans, W. Va.

    Re: What is This?

    Are there any markings on it at all? If there are then those would help folks help you figure out what it fits.
    Susan W. Linden

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  3. #3

    Re: What is This?

    If you do a google search on a gray & davis dynamo a newspaper article from 1912 comes up. It claims a dynamo and generator are the same thing. The only other markings on it are it is number 375 and it looks like a T or I series. It looks like new inside and turns freely. Here is a link to the article, The gasoline automobile - Google Books

  4. #4
    Senior Member Larry Schramm's Avatar
    Join Date
    Dec 2005
    Motor City, Michigan

    Re: What is This?

    With the pulley on the end, I agree that it is a generator. Maybe an aftermarket part as an accessory??
    Larry Schramm

    1915 Buick C-4 Truck
    1918 Buick E-4 Truck
    1917 Buick D35 Touring
    1976 Corvette-Wifes car
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  5. #5

    Re: What is This?

    The article I posted the link to claim it was made by Delco for car companies.

  6. #6
    Senior Member
    Join Date
    Aug 2004

    Re: What is This?

    Yes in the early days, generators were known as dynamos and starters were just called motors.
    Gray and Davis Model T
    Jones 1916-17 25,26
    Metz 1915 25
    Stearns-Knight 1915 Light 4
    There may be additional applications as some lists that show Gray and Davis do not show the model.

  7. #7

    Re: What is This?

    Gray & Davis made aftermarket lighting systems for the Model T Ford, they also had a starter-generator set-up that mounted on the LH side of the engine and used a chain drive to a special front sprocket mounted on the front pulley of the crank. I sold two of this style units at Hershey about 20 years ago, but they looked a lot like that only with a sprocket.

  8. #8

    Re: What is This?

    What is a unit like this worth? I may be willing to sell this if anyone has a use for it.

  9. #9

    Re: What is This?

    I think i got $65 per unit but they had all the bracketing and the pulley sprockets - no chain but it looked like narrow timing chain. That was 1980's money...

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