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** O T .. Need more Speed

D

Dutchman

Well-known Member

I need to replace the electric motor { which I have } on my air compressor ..
I want the compressor to turn a little FASTER .. it has a 5 1/2 inch pulley on it now .. thinking of going 6 inch or do I have to go 5 inch ...
,.

QUESTION : Do I needed to go a little smaller , or bigger ..
,>

THANKS for your help ..... mark
 
A big pulley turns a little one faster so you can put a smaller one on the compressor, or you can put a bigger one on the motor, course you might run into hp requirement issues if you get too outa hand
 
motor speed times motor pulley size in inches divided by driven pilley in inches. ex. 1725 rpm motor x4inch motor pulley=6900 divded by 10 compressor pulley=690rpm Big Sal
 
its funny how some folx have trouble with this ,,
I AM ONE that does,, Mark ,,, What i do is think of bicycle sprockets
 
To change the rpm you would use a bigger pulley on the motor or a smaller one on the pump. My thoughts is the compressor has been engineered to run at a certain speed, probably with a motor running 3450 rpm. I bet if you raise the rpm you will damage the pump. Also if you change the gear ratio you will over-task the motor at start-up and probably burn the new motor up. If it were me I would leave the pulleys to the factory specifications.
 
Putting a larger pully on the motor will speed up the compressor. Think of the circumprance of the pullys. To get one revolution of the compressor, you need the circumprance of the motor pully to travel the same distance.

Check your owners manual to sure you are using the correct RPM motor, and the maximum speed you can run the compressor.

If you can run the compressor faster, you will probably need a larger HP motor.

Calender is Great! Got two, one for me and I think I'll take the second by the local CaseIH dealer so they can see what real Case tractors look like!
 
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