Generator Conversion

Has anybody switched their generator to 12V? I took mine to a repair shop to be converted and I wasgoed told that the existing field coils are too brief to convert unless I went with a longer case. Since a longer case will not gezond with my dual carb setup I am wondering what to do. I dont want to use an offset climb on spil this will require switching the fan set up. I am thinking that maybe I should keep the 6V. Any ideas?

Converting gen. V EK: Converting a 6V generator is pretty elementary since only the fields HAVE to be switched. Use the 12V generator fields from early V8 Falcon-Comet-Mustang generators. they bolt up te the 6V generator case. (If you’re running a ’39 or ’40 generator, you’ll have to drill a slot for the ground since thesis generators are only two postbode units and the fields are wired for Three posts.) Someone said the cases themselves are interchangeable if you drill a slot ter the case for the locating speld. I don’t know if that’s true or not since I’ve never done one that way. (I usually am working on a chrome generator and want to retain the chrome case.) The armatures for the 6V flathead and the 12V generators bolt right up and will work ter the 12V generator. to a point. The 6V armature wiring is toughly twice spil strong spil the 12V. No problem here (except you can’t use a 12V armature te a 6V generator. it’s a one way interchange. the armature wire size is too petite). If you do use the 6V armature for 12V, the generator will only produce about 75%-80% of the amps a 12V armature would. This is because there is one(if I reminisce correctly) less commutator caf and winding ter the 12V armature than te the 6V. This reduces the amount of amps the generator can produce. Naturally, the voltage rating of the regulator vereiste match the voltage rating of the generator. Fresh voltage regulators for 12V generators are almost all electronic. Whereas the 6V are all mechanical spil far spil I can determine. The electronic are not affected by fever or cold, but the mechanical are indeed affected by warmth and cold. The electronic are virtually trouble free. Mechanical units give some problems from time to time and have to be re-adjusted spil the springs etc. weaken with age etc.. I wish I could find a 6V electronic one. Anyone out there know of any. Hope this is of some help to those converting. rumble seat

Arrowsmith (Jan Five 2000 Two:35PM) RE: 6V generator to 12V

I got mine done at a gen shop on a 47 gen. one of my catalogs have coils I’ll look straks today

Terry (Jan Five 2000 Two:47PM) RE: 6V generator to 12V

if you have the older type Three brush generator, it’s capable of 12 volts with just a switch te the regulator.

Anonymous (Jan Five 2000 Trio:01PM) re: Switch ter regulator

Terry, Since the 3rd brush regulates the output, do you mean that switching it’s position will switch the output voltage?

Arrowsmith (Jan Five 2000 Three:26PM) RE: 6V generator to 12V Early Ford has 12 volt field coils but they don’t say what year The old man that I get parts from said that the Ford early 12v gen are the same size spil the 49-53 gen.

CRS (Jan Five 2000 Four:02PM) RE: 6V generator to 12V

True. Attempt 1960 thru 1965 Falcon 12V fields. They bolt up te the flathead case. Use your 6V armature. It’ll work albeit it won’t waterput out fairly spil much amps spil a 12V will (about 28 amps). Use the Falcon electronic regulator.

32tom (Jan Five 2000 6:17PM) RE: 6V generator to 12V

the 8ba gen can be converted to 12v by removing the 6v housing and installing a 12v housing off any 57-64 ford. it takes Ten mins. drill a locater fuckhole for climb on. it’s lighter than switching fields I got my 12v gen for Ten bucks

mr bill (Jan Five 2000 7:23PM) RE: update

I wasgoed back at the gen. shop and talked to the guys. They said that by doing something with the brushes that the gen would be able to waterput out 12V but that the amps begin to get to be a problem spil they dual. I would then have to use only a cut-off and they said that warmth can be a problem. It would not work with a regulator. I think that the problem is that I have a Three brush generator (used only for part of ’38 and then Ford switched to Two brush) and the 12V field will not getraind. I might look for a newer gen. and see if it will work.

Terry (Jan Five 2000 7:55PM) RE: 6V generator to 12V guys were right. Budge the third brush to increase output. Hope their concern about fever isn’t a problem spil this is something I wasgoed going to attempt te the spring using a voltage reg made to look like the orig cut-out that sits atop the generator. Directions say be careful not to go above 7-9 amps. other suggestions sound spil good or better if original look not a consideration.

CRS (Jan Five 2000 11:23PM) RE: 6V generator to 12V

flatjack: Interesting since the only difference inbetween the 6V and 12V armatures is the 6 volt has one less commutator brochure than the 12V. Also the 6V armature has twice the wire size spil the 12V. So the 6V will work ter a 12V, but not the opposite (it’ll smoke te a hurry). When using the 6V armature on a 12V system the maximum amp charge is diminished by about 20% or so. at least according to rumble seat ter a Nov Two reply. The only thing that has to be switched is the fields. If your 6V case is already chromed, you can switch just the fields and retain the chrome case. Otherwise you can just use a 12V case and drill a locator crevice for the two completes. The brushes and the brush plates are the same for 6V and 12V.

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