replacing generator with an alternator

[sastanley]

thank you Shawn!
here is a little video showing my boat - except for repacking shaft part

https://www.youtube.com/watch?v=cCMi8YxSehI

I hope you can see it

Yes...I can see it. This is so awesome. Get a video of it running some day!!!

Does anyone on the forum have a 12V 35A motorola we can send to 2Dogs ?? Would this solve his problem ?

[2dogsnight]

What is "field connection" ....can't figure it out

[2dogsnight]

Yes...I can see it. This is so awesome. Get a video of it running some day!!!

Does anyone on the forum have a 12V 35A motorola we can send to 2Dogs ?? Would this solve his problem ?

I am slowly learning to use simple editing skills and will make video of my Atomic soon.
I can buy an suitable alternator. Can someone send me a link to one that will work for my motor? I did look at lots of them so far and don't know what will fit my motor. One wire alternator sound simple.......price wise $250- is way too expensive, $60- ish is doable.

[joe_db]

The generator should have two connections - armature and field. The armature is the main DC output and should be connected to that big relay. The field is what regulates the output. Depending on the generator, the field wire may be feed from the positive side or connected to ground through the regulator.

[2dogsnight]

alternator shop give me a broken alternator that looks similar to Delco 10 SI single wire that Joe was recommending earlier. First challenge is position of pulley that is off around 1" compared to original generator.
I think generator is powering raw water pump in my motor...!!!??.....no, can't be

[joe_db]

It is not going to just bolt on.
You will need this:

https://moyermarine.com/product/lifting-eye-bracket-late-model-aftermarket-ovel_02_221/

And this:

https://moyermarine.com/product/alternator-support-arm-late-model-ovel_03_222/

And this:

https://moyermarine.com/product/alternator-support-arm-bracket-ovel_13_558/

Note the generator does not power the water pump, the accessory drive powers the water pump and the generator both.

[2dogsnight]

wander if this fits my motor, supposed to be good for 1964 - 65 Atomic

https://www.ebay.com/itm/254384243528?hash=item3b3a7b8348:g:fO4AAOSw4cFdngND

[2dogsnight]

It is not going to just bolt on.
You will need this:

https://moyermarine.com/product/lifting-eye-bracket-late-model-aftermarket-ovel_02_221/

And this:

https://moyermarine.com/product/alternator-support-arm-late-model-ovel_03_222/

And this:

https://moyermarine.com/product/alternator-support-arm-bracket-ovel_13_558/

Note the generator does not power the water pump, the accessory drive powers the water pump and the generator both.

Just looking over all 3 items........still can't figure out if there is one that will position the alternator over the pulley on accessory drive?? Would it be the new lift eye bracket??
I am ready to get all that but want to be sure . Thank you Joe!

[joe_db]

The lifting eye is what lines up the alternator. You can fit a 10si, but make sure it is a MARINE 10si.

[2dogsnight]

The lifting eye is what lines up the alternator. You can fit a 10si, but make sure it is a MARINE 10si.

thank you Joe,
placed the order with Moyer Marine for all brackets.
Looking for the alternator, NAPA and other automotive part stores want me to tell them what car I need it for
Took generator out of the boat and found some markings...

[2dogsnight]

Well, received Moyers brackets yesterday and my new alternator. Alternator was build for me by Scott from The Rebuilder in Kent WA. He made it to my specifications: Delco style, S10, 63A, single wire, for marine motor...price $85 He will work on my original generator, as I want to keep it in case I would like to go back to original set up.
Spend few hours planning how to fit it into my 1958 Atomic 4. Moyer brackets were useful. The lifting eye needed some modifications, support arm would not fit my motor. Today everything fell into place.
Started the motor and watch the voltage reading in horror....only 12.2V !r
But after 5-10 seconds reading was getting better and better and end up being 14.4V Success!!!
Going to the boat in few hours and will be taking it for a spin and test of new alternator.
Thank you everyone!!

Wojo

[joe_db]

More voltage and less sparks

[ndutton]

Delco style, S10, 63A, single wire, for marine motor... Started the motor and watch the voltage reading in horror....only 12.2V

The single wire self excite alternators need a bump in RPM to start charging, something like 1000RPM.

[joe_db]

FYI - Your 14.4 volts is too high for gel batteries if you even want them. It is a bit high for wet cells too for float, I would be checking the water frequently if you stick with it.
Being a simple powerboat without a lot of hotel loads you may not really care to do any more work on this, but the 10si series of alternators have a lot of regulators available for them. You might hunt around for a lower voltage one if you want to.

[2dogsnight]

Joe,
I am still testing the whole set up, including alternator. Yesterday I was cruising at 1000rpm and was getting charge 13.5V.
Motor was pretty hot......how hot? ....will be checking that today. Stuffing box is not letting one drip of water trough - will be looking into that today too. So lots more to do. BTW, I wouldn't know what to look for as far as regulator - all I know that there is one inside