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Strip Poker 388

02-18-2013 11:31 PM

What is the rpm of my supercharger with?

1 Attachment(s)

I have a 4.250 top pulley and a 8 inch bottom. What would my blower speed be at? how do I figure it?

3000 rpm
3500 rpm
5800 rpm

thanks
Rob

TahoeRick

02-19-2013 01:03 AM

Quote:

Originally Posted by Strip Poker 388 (Post 3870454)

I have a 4.250 top pulley and a 8 inch bottom. What would my blower speed be at? how do I figure it?

3000 rpm
3500 rpm
5800 rpm

thanks
Rob

Jeeze... Sounds like almost two to one. 5000 rpm is about 9000 rpm blower speed

MILD THUNDER

02-19-2013 10:59 AM

Quote:

Originally Posted by Strip Poker 388 (Post 3870454)

I have a 4.250 top pulley and a 8 inch bottom. What would my blower speed be at? how do I figure it?

3000 rpm
3500 rpm
5800 rpm

thanks
Rob

8 divided by 4.250=
1.882 ratio

3000x1.882=5646RPM
3500 =6587RPM
5800=10915RPM

Strip Poker 388

02-19-2013 12:37 PM

Quote:

Originally Posted by MILD THUNDER (Post 3870704)

8 divided by 4.250=
1.882 ratio

3000x1.882=5646RPM
3500 =6587RPM
5800=10915RPM

Thanks for the math,I think Whipple said 15-16k was max, I guess 11000rpm is a good bit below?

so my normal cruz Whipple rpm would be 5600-6500rpm

Rob

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