Gas Air Compressor

[nbaff]

I have an older air compressor that is gas. I picked it up from a guy for a song. I know that since the pump is off a gas that it would be rated for continous duty. I have no idea that amount of air that it puts out, but I am sure that it would be plenty to keep up with most of my tools. But the sucker is loud. I want to convert it to electric. I was thinking about just getting a 2hp electric motor rated for continous duty with about a 1.15 service factor capacitor start. Any ideas where to get this motor and where to get one cheap?

 

[Elroy]

You need to look at the RPM. Most small internal combustion engines are rated @ 3600. Your "typical" electric motor is 1750. Sources are many. Look in any Grainger catalog and you will find page upon page. However a 120 volt motor is going to be limited to maybe 2 horse. A 2 horse gas engine is small so you will probably have to go to a 220 motor to get the horsepower then you need to look at the "drive ratio". Also don't forget to consider the overload protection.

 

[kartracer55]

Gas air compressors typically use a higher hp motor than thier electric counter part, if you do abig of research youll be able to find exact numbers and ratios. Eaton has two compressors that share the same pump, ones a gas, and the other is electric. The Gas uses a 6.5hp honda, the electric is 4.5hp. Also, like Elroy mentioned, the speeds of the motor will be different than that of the engine, so you will have to play around with the pulleys as well

Jim

 

[nbaff]

I have no worries about going with a 220volt compressor. Most of the motors that I have seen have a 3450 speed more so that then 1750. I'm sure that I am going to have to play with the pulley ratio some.

 

[kartracer55]

Im to qualified to tell you why, but the lower RPm motors have more torque and most industrial and more serious home owner compressors run 1750 rpm motors