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Datsun 1200cc engine to drive a 12 KW power generator
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I plan to run a 12 KW power generator off the front end of a 1200cc Datsun engine. The generator requires CCW rotation so need to do it that way. Anyone have any long term concerns about doing this. I'm thinking a flywheel on the front end would take out vibrations that could be induced from the generator. Comments.

Posted on: 10/6 14:27
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Re: Datsun 1200cc engine to drive a 12 KW power generator
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Datsun A-series engine have a timing chain tensioner designed to work with clockwise rotation. So some method will need to be developed to change that, like maybe a gear drive

12kw is only 16hp, so I expect crank end will be ok. Need to find a way to attach as the stock crank key is not very strong. Also driving it off the fragile cast iron crank pulley would be a problem as they are known to crack sometimes


Maybe you could install a supercharger drive pulley, and drive the generator off a reversing gear, while keeping the standard engine rotation?

Crank Pulley For Supercharger Drive
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Posted on: 10/7 5:07
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Re: Datsun 1200cc engine to drive a 12 KW power generator
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at the back of the crank flange would be better
Also you can do an A6 engine cut and shut A12
someone in finland or somewhere cold did a beauty

Posted on: 10/8 15:49
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Re: Datsun 1200cc engine to drive a 12 KW power generator
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Thanks for the info. My intent is not to reverse engine rotation as I believe that would create many new issues. Some and I believe most engines have the crank offset slightly from true vertical of the cylinder so the downward push on the piston during the power stroke is more straight. Reversing the rotation the power stroke would be on the other side at a greater angle and more stress on the pistons and rods. Then there would be cam timing and timing chain issues as you said.

I have used a 2 gpm hydraulic pump on the front end of a 1972 1200cc engine through a love joy coupling for over 15 years at pressures of 2200 psi, to raise the boom on my windmill boom truck with no problems. You might calculate HP needed for that. Doesn't seem to load the engine much at all.

Posted on: 10/8 16:39
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Re: Datsun 1200cc engine to drive a 12 KW power generator
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If you use a lovejoy coupling, that will eliminate harmonic problems. Which aren't much of a problem in the A12 engine in any case

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jpg  lovejoy coupling.jpg (6.21 KB)
174_59da6fce901b2.jpg 300X174 px

Posted on: 10/8 19:34
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Re: Datsun 1200cc engine to drive a 12 KW power generator
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How much torque can you put through the key on the front pulley? 12kW has got to be close-ish to the sum of all accessories (alternator, air-conditioning, water pump). 12kW is like 3 air conditioners.

If you drive the generator from a belt off the flywheel side you can choose to drive it any direction you want just by orientating the generator relative to the motor. Easy.

Posted on: 10/8 21:23
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Re: Datsun 1200cc engine to drive a 12 KW power generator
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Hey, great idea putting the two side by side instead of inline. I usually think of everything but didn't think of that. Just goes to say. Two heads are better than one.

Posted on: 10/8 21:44
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