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Critique my f1a build please

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Old 07-10-2012, 12:54 AM
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ok so i searched here for how to figure out my rpm on the f1a is, but how do you convert that to psi?

my f1a is rated at 74000 rpm max my calculations show me at 72572 rpm
used this formula

Crank Pulley: 7.65"
Blower Pulley: 3.7"
F1A Step Up: 5.40
Max RPM: 6500

7.65 x 6500 = 49725
49725 x 5.4 = 268515
268515 / 3.7 = 72572 rpm impeller speed

not sure how to figure out the boost this will make just wondering..
Old 07-10-2012, 09:16 AM
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You can Guesstimate but boost will be dependent a lot on the restriction in the motor (how well it moves the air)



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