Forced Induction Superchargers | Turbochargers | Intercoolers

Impeller speed

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Old 04-22-2006, 12:23 PM
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Default Impeller speed

What the formula for figuring out impeller speed?
Old 04-22-2006, 02:02 PM
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Procharger + smaller pulley + more belt slip = you letting me weld turbo pipes for you.

Old 04-22-2006, 02:18 PM
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Like I told Kevin(ss) if it breaks this time Im getting rid of it. But according to everyone with SDCE it will slip no more, so we'll see. But I will be doing an FMIC as soon as I sell my twin setup
Old 04-22-2006, 09:35 PM
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Crank pulley inches, divided by blower pulley inches, x step-up ratio x max. rpm's

Example : 7.25 x 3.7 = 1.959 x 4.10 (p1sc-1 step-up) = 8.03 x 6500 rpm = 52,219 impeller speed
Old 04-22-2006, 11:19 PM
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Originally Posted by Blown SS
Crank pulley inches, divided by blower pulley inches, x step-up ratio x max. rpm's

Example : 7.25 x 3.7 = 1.959 x 4.10 (p1sc-1 step-up) = 8.03 x 6500 rpm = 52,219 impeller speed
You need to correct the sign you have there.

I usually do it this way which makes it easier to change the value of the SC pulley to figure out what you exactly need.

(Crank Pulley*max RPM*Step up ratio)/ SC pulley

(7.25*6500*4.10)/3.70= 52,219 impeller speed.
Old 04-23-2006, 10:28 AM
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Sweet....3.4 pulley it is. Thanks fellas




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