Does anyone out there have any information on a Gray Davis starter generator for a model T. I am getting one but need some assistance in installing and wiring it up, thank you for any help,
In my extensive old car electrical reference library I have a three booklets relating to Gray & Davis and the Model T Ford:
1.) "Gray & Davis Book of Instructions No. A-68 Double Unit System for Ford cars". It is important to understand GD made two units for the Model T Ford car. They are fundamentally the same only one uses third brush regulation and the other uses a regulator/cutout. Both are depicted in the booklet and you will be able to tell what you actually have.
2.) I also have a 1921 book entitled "Automobile Electrical Systems" and Chapter III Special Systems for Ford-Gray & Davis which is is basically the same information with about 25 pages describing in detail operation including the two different regulators.
3.) I also have a 1923 book entitled "Automotive Engineering", Section "Electrical Equipment" with a sub-section "Special Equipment for Ford Cars" showing installation of the the "Gray & Davis" 3rd brush regulation unit on a Ford car in detail.
All three have physical wiring diagrams, but I cannot find a good electrical circuit schematic for trouble shooting.
Your welcome to a copy of this information for the copy and mailing costs.
Ron the Coilman
Some where I have a booklet on the gray davis starter, I;ll keep my eyes open for it, as my deceased brother-in-law has one in his collection so I bought the booklet
Thank you very much for your help. I will take a couple pictures of the unit, as it has arrived today and we can see if the literature matches what I have. I would love to get a copy of the literature, thanks,
Here is the unit I was talking about, needs a little TLC.
Here are some photos of the Gray & Davis starter for an early T. Ron Patterson wrote offering considerable literature on G & D. In a post of October 18, 2009 by Dan Treace he shows an old ad for G & D starter setup on a post 15 T. The one I have is completely different. Ron points out that G &D made two different systems for Fords. This one has a regulator and mounts onto the engine on a large crab-like yellow brass bracket. The fan mounts on the intermediate sprocket shaft. It is a special small fan to fit in the space left over. It has a rather neat chain adjustment setup.
My father-in-law, who is an old T man, bought the starter generator at a garage sale in Aylmer, Ont in 1985 for $75. The chap selling it had no idea what it was. About 15 years ago he gave it to a local fellow to put on his 1912 T. He never got to it and is now moving to a new house so we managed to get it back to put on my 15 T. We thought it would be a pretty rare item. It is complete and has never been out in the rain so is like new with the silent chain. Will have to make a crankshaft sprocket and install a new lower chain.
We note that the starter is 6 volt 100 amp capacity. The generator is 6 volt 10 amp at 1000 RPM. The only drawback is that it weighs about 100 lbs so adds a lot of weight to the front left corner of the T.
Your comments would be appreciated.
Be sure to add a double Hasler spring setup on the drivers side! LOL Very neat.
No kidding, that thing is a beast! ;^)
Unfortunately all the literature I have is for the Gray & Davis Model A-68. The unit in your photo does not look anything like a Model A-68. Yours appears to be an earlier version with manual engaged starter drive. The A-68 uses a Bendix drive.
Ron the Coilman
Here is an earlier thread on a starter-generator, maybe Jack Putnam can help fill in the details on yours:
looks like gray & Davis made more than one. here is a pix of mine. charley
Your Gray and Davis starting and lighting system is a Model Y-T, two unit system. It has a Type Y starting motor and a Type T dynamo.
I have the illustrated instruction manual for installing and operating, and the illustrated parts catalog for it. Send a message if you would like copies. I would scan them and send them, but it would take many hours to do on my dial-up.