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pump pulley
- Thread starter Greg/sd
- Start date
Glenn Clark
New Member
Lets see...
1450 div. by 3600 = .4027...3.4 x .4027 = 1.37
To get the rpm's down you would need a engine pully around 1.37" if the pumps pully is 3.4"...Is there enough room to go with a larger pulley on the pump? 1.37" is awfully small.
1450 div. by 3600 = .4027...3.4 x .4027 = 1.37
To get the rpm's down you would need a engine pully around 1.37" if the pumps pully is 3.4"...Is there enough room to go with a larger pulley on the pump? 1.37" is awfully small.
Mark
Moderator / Sponsor
It gets a little confusing sometimes!
I had to scratch my head for a second or two!
To determine pulley / sheave size start with the "known" engine speed and engine sheave / pulley size.
3.4 sheave.. engine speed 3200 - 3600 RPM depending on who set it up, and " desired RPM 1450"
Divide driver speed by desired speed of driven: (driver = engine..driven=pump)
3200 divided by 1450 = 2.20........(A 2.2 to 1 ratio)
Next multiply 2.2 by the known size of the driver 3.4
2.2 x 3.4= 6.8
So you would need a sheave / pulley with size of @ 6.8.
I had to scratch my head for a second or two!
To determine pulley / sheave size start with the "known" engine speed and engine sheave / pulley size.
3.4 sheave.. engine speed 3200 - 3600 RPM depending on who set it up, and " desired RPM 1450"
Divide driver speed by desired speed of driven: (driver = engine..driven=pump)
3200 divided by 1450 = 2.20........(A 2.2 to 1 ratio)
Next multiply 2.2 by the known size of the driver 3.4
2.2 x 3.4= 6.8
So you would need a sheave / pulley with size of @ 6.8.
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Glenn Clark
New Member
Ah! Re-read post, I had it backwords...
H
Hotwaterwizard
Guest
If you want me to send you a worksheet I made up just Email me or go to my web page. Pumps 101