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Onan Fairbanks Morse v45s-20 generator light plant my first vintage generator


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  #1  
Old 06-14-2014, 01:10:59 PM
DaveinRI DaveinRI is offline
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Default Onan Fairbanks Morse v45s-20 generator light plant my first vintage generator

Hello, New to the forum although browsed many times looking at all of the wonderful vintage machinery. I am beggining to collect different pieces and recently acquired an Onan v45 that is in as found running condition that i wanted to share with the forum to get some feedback and possibly some advice.

I have lots of pictures and a video of it running that i will upload as soon as i can. I will try and upload the most important piece to determine most of information which i know everyone will require in order to tell me anything about the plant.

I know that the gas tank is not right, as it was added by the most recent PO. Its currently setup as a gravity feed as the electric that was retrofitted at some point and the original mechanical pump are not working(mech not even there).


The most recent owner advertised it as 8kw but the tag obviously says 5000watts, did he know something i do not?

Dave
In Rhode Island
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Old 06-14-2014, 01:40:09 PM
Jim Rankin Jim Rankin is offline
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Default Re: Onan Fairbanks Morse v45s-20 generator light plant my first vintage generator

NICE!

No, the PO was just wrong about the 8kW. After all, something that big and heavy surely has more than 5000W capacity! NOT

Or at least if it were mine (It's 58.5 years old)
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Old 06-14-2014, 01:41:16 PM
countryboy07 countryboy07 is offline
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Default Re: Onan Fairbanks Morse v45s-20 generator light plant my first vintage generator

very cool.....and very jealous. I have a w2c, the 2 cylinder version of yours, id love to find a v4 one of these days.
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Old 06-14-2014, 01:54:01 PM
YellowLister YellowLister is offline
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Default Re: Onan Fairbanks Morse v45s-20 generator light plant my first vintage generator

wow that is a beautiful example.. sure will be hard to beat that being your first..
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Old 06-14-2014, 02:55:15 PM
Leon N. Leon N. is offline
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Default Re: Onan Fairbanks Morse v45s-20 generator light plant my first vintage generator

Jim don't get messermized by the size of the prime mover. No, I do not think one could pull 8 KW from that machine-just look at the back end!

In those days, these machines were built to run continuously, 24/7 so the designers opted to over rate the IC engines so that they would not be taxed to heavily.

Geeze, just look at the Onan JB's as an example. Then compare the old stuff to the modern day Generacs and Onan- Cummings stuff.

Just my 2 cents.
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Old 06-14-2014, 03:01:05 PM
Kpack
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Default Re: Onan Fairbanks Morse v45s-20 generator light plant my first vintage generator

Wow
I understand the ac voltage on the tag but what is the dc 15 volt - 10 amp - 150 watts ?
A very very cool unit.
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Old 06-14-2014, 03:02:34 PM
DaveinRI DaveinRI is offline
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Default Re: Onan Fairbanks Morse v45s-20 generator light plant my first vintage generator

Thank you for the responses, I was very excited to get this unit after i saw it initially. The seller listed it in the antique section of craigslist without any info so that if i had not just accidentally happened to view post by my towns name i never would have seen it, and if it had been on the ground without the cart i never would have gone to look at it as it just seemed to have nice curb appeal with the cart.

As you will see when i upload the video later the engine start right up, and does not have any gaul marks on a majority of the bolts which would seem to indicate to me no hacking has gone on with the unit. The PO had used it several times over the past ten years to backfeed his house 240v during power outages. He said he never had any issues with surging or overloading delicate electronics, can this be used for reliable voltage?

Also i thought it was funny that the engine blows fan out the front of the radiator as opposed to a car that pulls it back and then across the engine, is this typical of this setup? Also the fan blades make the most noise when running, not bad bearings or a wobble just a lot of air moving, is that also typical to the point that its all you can hear. Its not a bad thing just curious.

Ive hit the block all over with the stethoscope and other than the lifters tapping, no crazy noises, are these hydraulic or mech lifter setups, im assuming mechanical but ready to be wrong.

I know i have alot of questions but am hoping that by reciprcating with pictures and video i can also give a little to the forum and not just be a burden, so thank you in advance.

Where can i get an original mech fuel pump? is it the same as the 2cyl, or is their a better alternative, stay gravity or add electric?

The radiator cap does not fit at all and is just resting on top, replacement universal or?

If i use the 12vdc backfeed to the battery to keep it charged do i need to install a voltage regulator or will it be ok without cooking the battery if i keep it down around 5amps?

Is the 12vdc back voltage or extra voltage or am i robbing from my 5kw when using it if i wanted to run 12v lights for the unit and surroundng areas during a storm?

And i guess the most important is. What do those of you with familiarity with these units think the most important thing you can tell me to check on the generator or engine so that i make sure i keep the unit running as well as it has been?


Thanks again and here are some more pics.

Dave
From Rhode Island
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Old 06-14-2014, 03:07:43 PM
DaveinRI DaveinRI is offline
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Default Re: Onan Fairbanks Morse v45s-20 generator light plant my first vintage generator

And a few more, i could not find more than 3-4 images on this site and none anywhere else so i hope its not picture overload if i put them up here. But sinces the radiator hoses and wire covering still appear to have the original paint/overspray on them i thought this was a fairly complete original unit. Minus the gas tank and control panel voltage, PO's had a small junction box of the generator.

Dave
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Old 06-14-2014, 03:19:07 PM
DaveinRI DaveinRI is offline
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Default Re: Onan Fairbanks Morse v45s-20 generator light plant my first vintage generator

And two more of the control box. If anyone would like a picture of any specific area to compare to others they have seen or just curious about the design or setup please let me know, i would be more than happy to accomodate any requests. I love original unmolested examples of vintage items. And although this unit appears to have modifications such as the tank, fuel pump and external control box i was very excited to find that all the decals were in place and readable and noone ever sent someone out with a can of paint to "freshen her up".


Story was that the guy i got her from who used it for storms acquired it from a farmer who used it to power his greenhouse fans during outages and had had it for a very long time.


Dave
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Old 06-14-2014, 04:02:18 PM
YellowLister YellowLister is offline
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Default Re: Onan Fairbanks Morse v45s-20 generator light plant my first vintage generator

I wish I could find one like that.. really cool score.. we don't mind the onan porn at all..

I don't have one of the 4 cylinders.. but I do have a 2 cylinder version in much worse condition.. only thing I would do is drain the coolant if it looks rusty.. napa might have the fuel pump rebuild kit.. but you don't have the pump do you? I see them on ebay from time to time. check the plugs make sure its not running lean or to rich.. and to see if its running on all 4.. not much else to do aside from checking out the gen brushes and slip rings..
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