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According to the manufacturer, the pump has to turn 1800 rpm to produce the flow rate and pressures as specified for the bed. I'm not mathematically inclined enough to figure out if you had say a 10hp motor at 3600rpm running through a reduction gear box to 1800rpm if that would transmit the...

Back when I was going to move my pump onto an MEP motor, I actually contacted the manufacture of the hydraulic pump used in a M936 and got the 18hp via diesel engine at 1800rpm straight from a service rep to match the M936 bed required pressures and flow. 18hp electric motors are not that common...

Nope, it runs 1:1 with the engine RPM, and in a M936 when the lever is engaged for the pto, the air throttle sets the engine to 1800-2000 RPM. That's a common speed range for electric motors. However you still need the HP to provide the pressures needed when under load. Uh, the pump that is...

a 20hp 220vac motor (what is required to run the wrecker pump under load) would draw 746 watts per hp, so 746 x 20 would be 14,920 watts. BIG generator would be needed, unless you were fine using a smaller HP motor and just waiting forever for the crane to move and cutting the load capacity.

Daniel, I have the exact same problem logging in at work too. The IP changed, and the internet provider reclassified the site. I have tried to get it reclassified with no luck. I used to get on the site many times a day but not since the server replacement. Doghead and I discussed this idea at...