Must. Get. Home. 

"Zerofret" (zerofret) 12/02/2014 at 16:20 • Filed to: None

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Underdrive pulleys just arrived at my doorstep! Only 2 more hours of work left.

G_Body_Man: Sponsored by the number 3 > Zerofret 12/02/2014 at 16:31

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4.6L ford?

Zerofret > G_Body_Man: Sponsored by the number 3 12/02/2014 at 16:33

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G_Body_Man: Sponsored by the number 3 > Zerofret 12/02/2014 at 16:34

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Nice. My buddy has a P71.

Steve in Manhattan > Zerofret 12/02/2014 at 16:43

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What do these do?

Zerofret > Steve in Manhattan 12/02/2014 at 16:53

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"Reduce parasitic drivetrain loss by cutting down the amount of power your accessories take up"

Destructive Tester > Zerofret 12/02/2014 at 17:00

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By increasing the mechanical advantage of the crank pulley over the accessory pulleys by decreasing the size of the crank pulley and increasing the accessories' with the side effect of slightly under-spinning the accessories. Think gears on a mountain bike where the crank is your legs, the chain is the belt, and the rear wheel are the accessories.

Zerofret > Destructive Tester 12/02/2014 at 17:31

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Destructive Tester > Zerofret 12/02/2014 at 20:00

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Sorry to piggyback, c

Zerofret > Destructive Tester 12/02/2014 at 20:06

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Nah man, super good! :)

Destructive Tester > Destructive Tester 12/02/2014 at 20:38

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(What I meant to post above)

Sorry to piggyback, but I've found that "how" usually follows "what". From my research most of the improvement is in percieved throttle response since they allow the engine to rev more freely. Probably most noticeable in SCCA racing or small, low-torque motors.

Destructive Tester > Zerofret 12/02/2014 at 20:39

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No prob, thanks for the Citizen Cane clap (first for one of my comments).