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Surplus water pump converstion to generator question

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01-04-13, 08:07 AM

seaaggie

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Surplus water pump converstion to generator question

I have a military surplus diesel powered centrifugal water pump that I'd like to convert into a generator if possible. The engine is a Yanmar L40AE-D putting out 3.8 HP. If this conversion is possible, is it a process of pulling off the pump and putting on an alternator?

Thanks in advance

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01-04-13, 08:45 AM

Halton

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Are you are talking about producing 120 volt A/C power or 12 volts D/C ?

If A/C.....you would need to correctly match the RPM so that the engine operates at it's ideal power range.....and at the same time....it needs to spin the generator at the right RPM to produce the correct frequency. Is there a governor that controls the engine speed? What is the size of the generator? Your output would be fairly limited by the HP of the engine. You would also need to solve any issue of compatibility between the drive shaft of the engine and the generator itself.

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01-04-13, 08:49 AM

ray2047

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Might be able to use a generator intended for a tractor PTO but the cost would probably exceed the price of a ready made generator. Especially one as small as would be powered by a less the five horsepower engine. On second thought I doubt a 3.8 HP engine would power a PTO generator. Here is a 5000 watt generator and note the engine is 10Hp. Amazon.com: Coleman Powermate PM0435003 5,000 Watt 10 HP Portable Generator: Patio, Lawn & Garden

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Electrical - AC & DC
Gfci, need help fixing

J

jallenwhit on Jan 02, 2013

Hi all, Looking for a little help on a weird electrical issue. I was running a space heater in my garage while I was working on a project when it went out all of a sudden. I went back to the source and found that I had plugged into a GFCI receptacle in my laundry room that had switched off. Assuming all I needed to do was reset the GFCI i pushed the reset without anything happening. I pulled the receptacle out of the wall and tested for power only to find that the hot wire had to power into the GFCI. I went to the panel and found that no breaker had flipped which at first was a little confusing. A little later I discovered that my freezer which is in the garage, on what is labeled in the panel as a dedicated circuit, was no longer working. I pulled the receptacle from the wall and found that it too was receiving no power to its hot wire. With these two outlets being the only 2 in the house to simultaneously give me problems my guess now is that they are in fact on the same circuit and the GFCI flipping has caused my freezer outlet to no longer receive power. The piece I can't figure out, how is the GFCI not receiving power? I have been able to visually track the freezer wire back to one stud bay away from the blown GFCI in my partially unfinished basement ceiling. Though I am not 100% sure that the two are connected because there are 4 wires total that run down from the ceiling to the same location in the wall. (side note, the home runs for the circuits in my basement are in the ceiling and the only other things in that same wall are a dedicated 120 receptacle for my washing machine and on the reverse side a GFCI and light sconce in the bathroom, i've tested thus far and the GFCI in question is not connected to the GFCI in the bathroom, i was able to access them from a hole behind my bathroom mirror.) I've gone all throughout the house and tested all the GFCI's I can find because we did remodel about 7 years ago and did quite a bit of new electrical. The only two outlets that I've found to have problems are the two described above and i'm at a loss for what is going on. Any input would be greatly appreciated! Thanks in advance!
Electrical - AC & DC
lighting

M

mr ruppert on Jan 04, 2013

i replaced a light in my basement and it comes on and stays on tried replacing the switch not turning off also checked old switch in another room and its working just fine help im lost :wall:

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