Lynn,

Another thing I don't understand is - with a flat plate engine sump how

does

the scavenge pump keep primed without a sump to hold some oil. It just

seems

it will start sucking air at anytime ( considering attitude) and lose

prime.

George (down under)

Lynn, do you have both of your scavenge sections in the
bottom plate?

Group, one of the advantages that hasn't been stated
about dry sumps is, removing as much oil as possible from inside 
the engine usually results in lower frictional
losses. (read, more horsepower) One of the best examples
of this if you can find it is Bill Jenkins "The Chevrolet
Racing Engine." He ran some of the first crank scraper
experiments and a highly schavenged crankcase. The finding
was more than 10 "free" horsepower. They also experimented 
with negative crankcase pressure. (Vacuum in the crankcase)
Which also resulted in more power. This idea has used by both 
Kawasaki and Suzuki on the large displacement motorcycles.
Both got about 1 hp gain at maximum RPMS. The rotary probably
won't gain as much due to it's different construction, but
reliablity should improve.
Bill Jepson

In fact not at all Bill. The E-shaft is not near the oil level
at all. The scavenge pumps themselves will suck more HP than anything
you might gain by using them..

Paul Lamar

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