Jeff Spitzer wrote:

At 07:54 AM 3/26/99 -0800, you wrote:

Todd Carrico wrote:

Anyone thought about a dry sump?  Would there be an advantage.

Just trying to stir up conversation.

Dry sumps have an advantage for racing for three reasons, none of which
apply to the rotary airplane engine.

1) Low profile engine for lower c.g. and better aero.  (Most airplanes dont
have a height issue with the bottom of the engine)

2) Reduced windage of crankshaft in sump area (Rotaries don't have a
crankshaft in the sump)

3) Reduced oil sloshing and retention during high g cornering. (Unless you
like flying really uncoordinated, this doesn't happen)

The disadvantage of a dry sump system for our use is that you have to run
the scavenge pump(s) which costs power.

Jeff Spitzer

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