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Old 01-28-2011, 08:14 PM
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electric to gas conversion compressor

I have recently been given by our local boat builder a Dresser Le roi , tru 7.5 compressor with an 80 gallon tank and a monster of a pump on it. The motor burnt out on it and they had planned on replacing it but bought a new compressor instead. I was wondering if it would be possible to convert this to a gas powered compressor as I live on homestead land and do not have the necessary voltage to run the electric motor. Are there advantages of doing so and can anyone tell me what size of a motor should I go with if it is possible to do so? I will be using it mainly for blasting. Appreciate any help I can get , Thank you!

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Old 01-29-2011, 05:47 PM
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look at the electric motor and see if they give a hp/rpm spec givin. you can change pulleys to match the rpm if different from a gas engine and i would prolly run a larger gas engine hp wise then the electric is rated it. hope this helps good luck!
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Old 01-29-2011, 07:42 PM
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My gasoline powered construction compressor has a different unloader that the elect compressor. . the gasoline engine runs all the time and when it reaches the high pressure it has an unloader idle valve that lets the engine slow down a bit and not pump any air until the pressure in the tank drops then it starts pumping again. when it hasn't been used for a while I have it WD 40 the mechanism and make sure it works. My son gave me a 10 HP 3 phase compressor out of one of the gas stations, I have been trying to decide whether to buy a rotory phase converter or switch it to gasoline. It cost us $ 4k to get 3 phase power to one of the farm pumps and $1200 per year minimum charge. just the power co charges , not the rest of the elect work reqd.
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