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Vintage Diesel and Oil Engines Fairbanks Morse, Lister, Petter, Witte and other pump injected Diesel oil engines.

Vintage Diesel and Oil Engines

Witte MD 12 project


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  #1  
Old 06-20-2017, 12:17:14 PM
Grigg Grigg is offline
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Default Witte MD 12 project

Last week I picked up second Witte Diesel to play with.
This one came with a 230 volt 10hp DC motor/generator which I'm not real sure what to do with.
It was setup to be cooled by city water, total loss.

Attached are a couple pictures of fetching it.
This evening I'll unload and see about starting it.

The story goes it was provided with or purchased to run a machine tool that required DC power, in a school setting. The only paperwork I have are 3 student papers/reports from 1947 detailing how to setup and run the tool, including one paragraph roughly describing how to adjust, hand crank, and start the engine and generator.
The machine tool is long gone. Next the engine was used for various mechanical engineering labs apparently infrequently until some years ago, now not run in 5 or more years. For that purpose I presume the cylinder was drilled and tapped for a valve into combustion chamber. I'm not sure what exactly was used for pressure sensors, indicators or the like. All I have is the valve attached, a couple spare valves, a pressure relief fitting, and it has thermocouple in exhaust and magnetic tone wheel bolted on end of crankshaft.

A few years ago the engine was removed from it's original installation and put in storage. I picked it up from there and it seems outwardly to be in fine shape. Missing an air cleaner but does have 1/4" screen over the inlet, keeps out the big chunks!

Grigg
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Old 06-20-2017, 12:28:07 PM
Vanman Vanman is offline
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Default Re: Witte MD 12 project

Nice that you were able to save Both machines! Hopefully their tinkering with the engine hasn't irreparably damaged it?

Too bad the machine tool it powered is gone.

LOVE the Direct Current motor! May we have a shot of its nameplate?

Keith
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Old 06-20-2017, 12:39:36 PM
Grigg Grigg is offline
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Default Re: Witte MD 12 project

Quote:
Originally Posted by Vanman View Post
LOVE the Direct Current motor! May we have a shot of its nameplate?

Keith
Sure, attached
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Old 06-20-2017, 04:03:43 PM
Andrew Mackey Andrew Mackey is offline
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Exclamation Re: Witte MD 12 project

The tag you posted says 'MOTOR', not generater. Does it indeed make power if it is driven, or was it used to motor over the engine? Interesting find! With the fuel shut off, the engine would have made one hell of an air compressor (valve on the head???).
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Old 06-20-2017, 04:22:23 PM
Vanman Vanman is offline
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Default Re: Witte MD 12 project

That shunt motor would make a quite good generator, especially since it has interpoles.

Interesting thought about that poor engine being turned into a compressor. Certainly seems possible.

By the nameplate, on the motor, I'd guess it to be of later manufacture than the engine.

Keith
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Old 06-20-2017, 09:46:10 PM
Grigg Grigg is offline
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Default Re: Witte MD 12 project

Try this video.



---------- Post added at 09:46:10 PM ---------- Previous post was at 09:44:16 PM ----------

Well.. that might not have worked and not sure why, try this link instead
https://youtu.be/moGzmNPAODY
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Old 06-20-2017, 10:29:56 PM
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Chuck Moss Chuck Moss is offline
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Default Re: Witte MD 12 project

Well done Grigg. That certainly didn't take you long to get going! It looked to me that it fired on the first time through compression. In any case you sure look to have found a treasure.
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Old 06-21-2017, 08:58:45 AM
Grigg Grigg is offline
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Default Re: Witte MD 12 project

Thanks,
It has a lot of original paint and should clean up nicely. Apparently it hasn't been all that long ago it was running and therefore wasn't any trouble to start again.

Oil was only on lowest end of dipstick so opened crankcase cover and poured oil on the moving stuff and filled the front sump. Eventually it settled in to be over full and running out dipstick hole by a few quarts, should have that sorted out now, thankfully figured it out last night before it made a mess.

It was definitely running the Direct Current "motor" as a generator and had been from at least 1947, presumably from new in early 40's I guess. To my eye the motor/generator does look suitably old.

What can I do with 230V DC? Or wonder about cost and inefficiency of an inverter to make it into AC?
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Old 06-21-2017, 11:22:10 AM
Vanman Vanman is offline
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Default Re: Witte MD 12 project

You could always slow down the engine and / or use a field rheostat to reduce the voltage to 115 or so. Did the generator come with its field rheostat? Without it, that one will have to be turned quite slowly to get 115 volts.

Then you could run light bulbs and quite a number of vintage appliances.

Keith
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Old 06-21-2017, 12:45:19 PM
Bill Hazzard Bill Hazzard is offline
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Default Re: Witte MD 12 project

You can buy 230V light bulbs.
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