Phaeton Posted November 8, 2023 Share Posted November 8, 2023 Need help identifying what looks like an accessory side mount 4 cylinder Bosch AT4 magneto circa 1910's 1920's . Looks very similar to ones used for Model T Ford but I have not been able to locate any information to verify. Any help would be greatly appreciated. Link to comment Share on other sites More sharing options...
Oldtech Posted November 8, 2023 Share Posted November 8, 2023 I'm thinking tractor, but what? Gear does look T-ish though Link to comment Share on other sites More sharing options...
Mark Wetherbee Posted November 8, 2023 Share Posted November 8, 2023 I think it’s for the Fordson tractor. It has been several years since I saw one but pretty sure that’s it… 1 Link to comment Share on other sites More sharing options...
Mark Gregush Posted November 9, 2023 Share Posted November 9, 2023 Tractor wouldn't have anywhere for that to mount. Most Fordsons used a cross drive when fitting the magneto that was driven off the end of the camshaft. The OD of the gear and the locating boss behind it look too big to fit in place of the generator, along with the mounting hole placement for it to be Ford Model T. Rotate the housing 45 degrees counter clockwise for proper orientation on the Model T engine. Link to comment Share on other sites More sharing options...
Phaeton Posted November 9, 2023 Author Share Posted November 9, 2023 I agree that while the gear looks to possibly align to a Model T gear, the generator opening would be to small for it to allow the Magneto mounting bracket to install. Could it be for earlier than 1919 Model T, possibly needing another bracket? Thanks for the input and thoughts, as we try and narrow down the application. Link to comment Share on other sites More sharing options...
Phaeton Posted November 9, 2023 Author Share Posted November 9, 2023 Further research shows that the pic below is AT4 unit set up for Model T generator. As Mark suggested, it clearly will not work for the Model T generator cars. Looking like my unit will not work for a Model T. Link to comment Share on other sites More sharing options...
1912Staver Posted November 10, 2023 Share Posted November 10, 2023 The mount and drive gear looks a lot like the one on a early 1930's McCormick - Deering tractor I used to own. But they used their own { International Harvester } magneto's , not Bosch. My guess would be some sort of late 1920's / early 1930's tractor. Link to comment Share on other sites More sharing options...
wayne sheldon Posted November 10, 2023 Share Posted November 10, 2023 The gear on your magneto is way too large, too many teeth, to use on a model T regardless of mountings. The magneto could probably be used on a model T with a proper gear and mountings. That mounting could possibly with considerable alterations be made to work for a model T. However, it clearly was not intended for a T. I agree with others that it most likely was for some tractor or industrial use engine. The mounting is similar (but not the same!) as a 1950s Le Roi industrial air compressor my dad used to have. Link to comment Share on other sites More sharing options...
Dandy Dave Posted November 13, 2023 Share Posted November 13, 2023 The cast Iron mount looks like 1920's-1930's International Harvester to me. F-20, 10-20. Will also fit others. Link to comment Share on other sites More sharing options...
Dandy Dave Posted November 13, 2023 Share Posted November 13, 2023 On 11/9/2023 at 7:06 PM, 1912Staver said: The mount and drive gear looks a lot like the one on a early 1930's McCormick - Deering tractor I used to own. But they used their own { International Harvester } magneto's , not Bosch. My guess would be some sort of late 1920's / early 1930's tractor. Yes. That. I've owed a bunch through the years. The mag is a replacement some farmer put on it. If it fit's, use it. Link to comment Share on other sites More sharing options...
Dandy Dave Posted November 13, 2023 Share Posted November 13, 2023 (edited) On second though not IHC. As the timing was adjusted with bolts rather than a lock nut on a tapered shaft. I've had my hands on one like that before. Suffering from old timers disease here. Been there. Done that. Can't remember. Edited November 13, 2023 by Dandy Dave (see edit history) Link to comment Share on other sites More sharing options...
Oldtech Posted November 13, 2023 Share Posted November 13, 2023 Case used that timing system. 1 Link to comment Share on other sites More sharing options...
Phaeton Posted November 17, 2023 Author Share Posted November 17, 2023 Thanks everyone for sharing, seem to be getting a lot closer. Link to comment Share on other sites More sharing options...
Dandy Dave Posted November 18, 2023 Share Posted November 18, 2023 The bracket on this 1930 Model L Case looks similar. Link to comment Share on other sites More sharing options...
Phaeton Posted November 25, 2023 Author Share Posted November 25, 2023 That bracket does look similar in size and shape. We might have a match. Thanks Dandy Dave Link to comment Share on other sites More sharing options...
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