Bill Freeman wrote:

Paul,

Why not build a simple venturi system with an adjustable
(reaplaceable) orifice which feeds the oil into the fuel upstream
of the fuel injection.  Start a little big and watch the usage rate
and adjust the orifice size downward until it feeds the
correct ratio.  The use of synthetic would help avoid
the problem of variable viscosity (with temp) of the oil causing
variable mixing ratio.

This is how your hose-end yard sprayer works and it is
easily adjustable, and seems to work well.

The only downside is running out of oil in the tank would
fry the motor.

Bill

Good idea. At least someone should try it. We would need
at least two for a two rotor. Would we get ice? How much
HP loss? Do you think the viscosity is low enough to
work? What about the change in head as the oil is 
depleted? That could be the show stopper.

Paul Lamar
 
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