Compressor motor rpm question

[mshel]

If the compressor pump is rated at say 850 rpm, what should the motor rpm be to achieve this??? I know the combination of pump wheel diameter and the motor pulley figure into this but not sure how this all calculates.

This is info for a potential gloat (maybe) so need some fast feedback. Any help would be appreciated.

Mike

 

[mshel]

If the motor is 1750 rpm then the compressor pulley needs to be 2x the motor pulley.

If the motor is 3450 rpm then the compressor pulley needs to be 4x the motor pulley.

Mike thanks for the info. So how is the calculation actually done????

Mike

 

[DavidF]

Pulleys are like gears except no teeth so you go by circumference and since circumference is directly related to diameter we can simplify.

(Motor pulley Diameter * motor RPM) divided by Compressor Pulley = Compressor RPM

If we let M Pulley = 1

then Motor speed divided by C pulley = C speed

If motor speed = 1750 and C pulley = 2
then 1725/2=865

If motor speed = 3450 and C pulley = 4
then 3450/4=865



Or 1725/850=2.02

3450/850=4.05

If your motor is 1750 and its pulley is 3 inch diameter then the compressor pulley needs to be 6.17 or a 6 inch pulley. Twice as big.


Somebody double check me on this but I am pretty sure that's how it works.

Sounds right to me.....

 

[Jonz]

I need an aspirin.

 

[Partman]

I need an aspirin.

Goody's works faster !:-D

Danny

 

[Jonz]

Goody's works faster !:-D

Danny

:lol:

 

[NCPete]

or BC powders!