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Author Topic: Thinking about building a small Diesel DC powerplant  (Read 8336 times)
Hal
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« Reply #60 on: July 08, 2010, 10:55:06 PM »

Kind of late to this thread I'm afraid but thought this might be of some interrest. About two years ago when fuel was almost $5 a gallon, I started a DC genset project. I  sourced a single cylinder Kubota, water cooled double balance shaft diesel. I'm driving a 200 amp 12 volt alternator, using a Zantrex 3 stage regulator with battery heat sensor. I plan on running at 2000 rpm, @150 amps to charge the battery bank. I have a heat exchanger to heat domestic water through my marine water heater (double walled of course). I have a Trace SW2512 which has load sharing so running a single air should be possible. Kubota claims a fuel usage figure of 8 hours per gallon at rated load. The sound box is on the drawing board using Bob Belters' design and will be quiet enough to run without anyone hearing a thing outside the bus.That's the plan anyway. Just need to get the time to finish it. Cheesy
Hal
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bevans6
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« Reply #61 on: July 09, 2010, 10:40:03 AM »

would an engine like this be a good choice for a DC power plant?  I am thinking of a single DN50 alternator, running the engine around 2000 rpm. 

http://www.dieselenginemotor.com/diesel/engines/4179,1.html

Brian
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1980 MCI MC-5C, 8V-71T from a M-110 self propelled howitzer
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« Reply #62 on: July 09, 2010, 10:46:34 AM »

Hal, Thanks for posting your experiences.   

Brian, I have looked at the single cylinder diesels and have come down to conclusion that for smooth quiet running I need to purchase a small 3 cylinder Yanmar or Kubota.   

I have received a few PM's from this email for updates.   I have purchased my 400 amp 24V alternators and need to write out a check for the powerplant.

 
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TomC
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« Reply #63 on: July 09, 2010, 01:24:25 PM »

Brian-that little 3 cylinder engine would be perfect! Quiet, smooth, long lasting.  Good Luck, TomC
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Tom & Donna Christman. '77 AMGeneral 10240B; 8V-71TATAIC V730.
Hal
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« Reply #64 on: July 09, 2010, 03:04:00 PM »

The single cylinder Kubota I bought uses double balance shafts and is remarkably smooth for a single. It is limited in hp and wouldn't work in your application but should work for my modest wattage requirements. The primary use is to charge batteries as running a 20k genset 3+ hours a day with limited load (without air of course) makes little sense. $12 to $15 a day to keep the refer going vs $1.50 makes it  practical. Hal
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NewbeeMC9
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« Reply #65 on: July 10, 2010, 10:44:30 AM »

Hal, Thanks for posting your experiences.   

Brian, I have looked at the single cylinder diesels and have come down to conclusion that for smooth quiet running I need to purchase a small 3 cylinder Yanmar or Kubota.   

I have received a few PM's from this email for updates.   I have purchased my 400 amp 24V alternators and need to write out a check for the powerplant.

 

I this the two 200 amps with a fancy dual controlling regulator or what did you end up with?



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Kenny
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« Reply #66 on: August 23, 2010, 04:23:39 PM »

Any updates on the DC powerplant?
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1941 and 1945 Flxible - South Lyon, Michigan
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