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- This topic has 14 replies, 9 voices, and was last updated 1 year, 3 months ago by todd281.
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January 24, 2022 at 5:57 pm #253359
I have a 1956 RD-18 Johnson 30hp. I came across a flywheel w/ second set of gears at the top for the generator belt, generator and bracket and belt for the generator. Can anyone tell me what else I would need, how does it charge the battery…is it worth it?
- This topic was modified 2 years, 2 months ago by Gary Pasquale. Reason: miss-spelling
January 24, 2022 at 8:24 pm #253377Most people would say it isn’t worth it. #1, it is 12V and starter is 6V. Takes a rare and endangered ($$$$) voltage regulator. The gen looks similar to the starter, mounted on opposite side from the carb.
January 25, 2022 at 7:31 am #253388The Starter and generator are both 12v.
Why can’t I just use this?
- This reply was modified 2 years, 2 months ago by Gary Pasquale.
January 25, 2022 at 8:02 am #253391Dunno. Interesting. Let us know how it works out.
January 25, 2022 at 12:05 pm #253406Frank -correct me if I am wrong but the regulator needs to produce 10 amps
January 25, 2022 at 1:32 pm #253415The correct regulator is a 3-unit regulator. 12V voltage reg, 10Amp current reg, and cut-out relay. 10Amps refers to the current limitation. No cars that I know of have only 10A systems. Harley Davidson also used them, but they are as hard to find as OMC.
I’m not smart enough to know, but I think the suggested unit is for a combo starter/generator that serves to start the engine and generate electricity once running. I’ve seen a few back in “The Day” on small engines, like on Kohler gas-engine golf carts. Too many years, to many tears ago.
January 25, 2022 at 2:12 pm #253416I believe this is the regulator that has been talked about before.
https://www.ebay.com/itm/383955705245?epid=17017006027&hash=item59658b1d9d:g:1CcAAOSwsyNhH~MXJanuary 25, 2022 at 3:07 pm #253417I believe this is the regulator that has been talked about before.
https://www.ebay.com/itm/383955705245?epid=17017006027&hash=item59658b1d9d:g:1CcAAOSwsyNhH~MXSomething’s wrong. Seems too cheap????? Decal says not to ground field terminal. But that’s how you go about testing a “Type A” gen.
This is what it’s supposed to get
https://www.ebay.com/itm/313616844630?epid=1839866689&hash=item4905054756:g:KfMAAOSwEFNg~uUY
- This reply was modified 2 years, 2 months ago by frankr.
January 26, 2022 at 2:32 pm #253447For the (VERY LITTLE) it’s worth, for **12V** regulators, I have a bookmark for an old incarnation of the blue board from January 2012:
Altenator on 33 hp evinrude
I have tested an inexpensive solid state voltage regulator for a Harley on my bench test setup using a Prestolite 4008M 12V generator. The solid state regulator is a 12V regulator and has a 10A current limit to protect the generator. The older Harley 12V generators are also a 12V, 10A unit with the same internal field connections as the Pretolite generators OMC used. I got it from J&P Cycles, Part number 381-309 and it was $49.99 plus shipping.
Which may still be available: https://www.jpcycles.com/product/381-309/v-twin-manufacturing-solid-state-voltage-regulator-for-12-volt-generators
It’s solid state (so it can’t get rusty, but may inexplicably and irreparably stop working at any time)
http://www.omc-boats.org
http://www.aerocraft-boats.orgJanuary 26, 2022 at 11:27 pm #253489not sure if this helps but i have a 63 40hp evinrude. i asked about a regulator a few years ago and guys on the forum recommended harley davidson excelsior voltage regulator. havent gotten around to installing it yet
mn
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