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  1. Scoupe89

    Re: RPM Formula

    HP = pump speed cubed HP2/HP1 = (RPM2/RPM1)^3
  2. Scoupe89

    Internal Belt Problems on Powerdyne Supercharger

    ""Are you using a toothed external drive ?"" The external drive belt is a 6 rib serpentine type belt. Here is their website and propaganda. www.powerdyne.com and http://www.powerdyne.com/silentdr.htm They are not willing to help, just keep saying "Send it back to...
  3. Scoupe89

    Internal Belt Problems on Powerdyne Supercharger

    I have had a Powerdyne Supercharger with an internal belt drive similar to a Cam drive belt on OHV engines. The belts seem to break due to both heat and tension. I have tried Kevlar belts, which seem to last longer, but still break. I have heard that Neoprene rubber is only good to 150* F...

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