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----- Original Message -----
From: "Marvin Kaye" <marv@lancaironline.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Thursday, October 03, 2002 7:29 PM
Subject: [FlyRotary] Re: water pumps
> Posted for Jim Sower <canarder@starband.net>:
>
> <... I use an underdrive pulley (smaller than stock) ...>
> How much underdrive? 10%? 15%? 20%?
> Thanks, Jim S.
The Racing Beat pulleys that I use reduce the water pump and alternator
speeds by about 15-20%.
Yvon Cournoyer
>
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