Subject: Oil pump cavitation
From: ACRE
Date: 5/20/2004, 6:45 AM


<< Am I missing something here, isn't the oil pump geared to one third e-shaft

 > speed ?

 > John >>

The pump has a 31 tooth sprocket and the shaft has a 23 tooth sprocket.

Lynn E. Hanover

Francois Badoux wrote:

No, sorry Lynn, on our engine, the pump has a 36 tooth sprocket and the shaft a 24 tooth sprocket.

Francois

Which would slow your pump even more making cavitation even less likely.

24/36 = .66 e-shaft speed verses 31/23 = .74 e-shaft speed. If what you say is true
Francois it would be a major breakthrough in Mazda rotary engines because it would
allow a drastic increase in the 10,000 RPM redline allowing more power to be generated.
The red line of the engine now is based on a combination of high oil pressure
and rotor weight.

Paul Lamar
 
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