will running a smaller crank pulley have any effect on S/C boost?
May 5, 2004 | 05:10 PM
#1
will running a smaller crank pulley have any effect on S/C boost?
lets say someone had a radix designed to run at 6-7psi boost
would running a smaller crank pulley increase said boost?
would running a smaller crank pulley increase said boost?
May 5, 2004 | 05:21 PM
#3
now that I think about it more I think that is correct
my analogy is this:
on a motorcycle if you want to have lower overall gear selections without going into the tranny you have two options......install a smaller front sprocket(i.e. blower pulley) or a larger rear sprocket (i.e. crank pulley)
makes perfect sense know! what was I thinking?
my analogy is this:
on a motorcycle if you want to have lower overall gear selections without going into the tranny you have two options......install a smaller front sprocket(i.e. blower pulley) or a larger rear sprocket (i.e. crank pulley)
makes perfect sense know! what was I thinking?
May 5, 2004 | 05:25 PM
#5
Originally Posted by moregrip
now that I think about it more I think that is correct
my analogy is this:
on a motorcycle if you want to have lower overall gear selections without going into the tranny you have two options......install a smaller front sprocket(i.e. blower pulley) or a larger rear sprocket (i.e. crank pulley)
makes perfect sense know! what was I thinking?
my analogy is this:
on a motorcycle if you want to have lower overall gear selections without going into the tranny you have two options......install a smaller front sprocket(i.e. blower pulley) or a larger rear sprocket (i.e. crank pulley)
makes perfect sense know! what was I thinking?
May 5, 2004 | 05:27 PM
#6
Launching!
Joined: Oct 2003
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From: Little Rock, AR
This may sound strange, but you'll have to have a bigger crank pulley to increase boost. The crankshaft will always spin at the same rotational speed. On two pulleys connected by a belt, the angular velocity times the radius of one pulley must equal the angular velocity times the radius of the second one. Thus keeping the same angular velocity on the crank and using a bigger radius makes the angular velocity increase on the unchanged radius on the supercharger pulley. Going to a smaller pulley on the supercharger itself will also increase boost.
May 5, 2004 | 06:02 PM
#7
Originally Posted by yeary01z71
This may sound strange, but you'll have to have a bigger crank pulley to increase boost. The crankshaft will always spin at the same rotational speed. On two pulleys connected by a belt, the angular velocity times the radius of one pulley must equal the angular velocity times the radius of the second one. Thus keeping the same angular velocity on the crank and using a bigger radius makes the angular velocity increase on the unchanged radius on the supercharger pulley. Going to a smaller pulley on the supercharger itself will also increase boost.
Uhhhhh, uhhhhhh huh huhuhuhuhhh he said bigger radius.
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