The roots type scavage pump is the only way I have been able to see things
done properly and they are available. All high end racing engines have used
them for decades.
Dave
> -----Original Message-----
> From: owner-land-speed@autox.team.net
> [mailto:owner-land-speed@autox.team.net]On Behalf Of Bryan Savage
> Sent: Thursday, May 25, 2006 10:35 AM
> To: 3 liter
> Cc: land-speed submit
> Subject: Re: Dry Sump Musings
>
>
> Excellent information Elon.
>
> Going back in history, Smokey wrote about a special dyno oil pan
> he built that
> was about three feet deep and had plastic sides. After only a few
> minits running
> there would be a few inches of oil in the bottom and the rest
> would fill with foam.
> Also one of the early Cosworth F-1 engines had a centrifical
> air-oil seperator and
> a small roots pump to evacuate ait from the motor. The wrist pin
> problem was
> addressed with oil jets directed at the pin/bottom of the piston.
> Aireation takes time. The more passes through the engine, the
> more air. This isn't
> nearly the problem at the end of 1320 feet as it is at the end
> of 26,400 feet. In my
> opinion, it's a major cause of wet sump engine failures at Bonneville.
>
> Bryan
>
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