Bill,

Thanks for the heads up on the lubricity issue

with AGE 85. In light of

what
you said it would be prudent for me to premix two

cycle oil, especially

since I will be going with the 10:1 Renesis

rotors. One point I would

appreciate your opinion on.  I am considering

having the two or three

injectors per rotor.

I want to place an injector (probably the primary

for better idling) in

the
location of the oil metering hole and the

secondary injectors shooting

through the P port after the slide throttle.

Because of the size of the hole needed to provide

a spray directly into

the
chamber won't that hole volume lower the

compression ratio?  Ditto a third

spark plug?

Thanks

Doug

Doug, I would be interested in your application of
injectors at the "oil
metering holes." Please keep me posted. Milo

Doug
I am also interested in your injector in the oil port
approach. Have you managed to remove the threaded
brass insert in the bottom of the port? If so, what
did it take? BTW the oil port is early in the intake
cycle, so I don't see any effect on C/R.
regards, Robert

Robert, Milo

I haven't touched the housings yet.  I have several junk housings that I
would like the local machine shop to bore but they tend to want all drawings
done first so that they can do all three holes in the same session.  That is
P-port, third plug hole, and oil meter location injector.  I would like to
"just DO IT" but experience has taught me that while satisfying the
immediate urge I will have to do it over again:)   The middle way is to have
them do a welding experiment for me.

 I like the idea of having an O-ring or flat seal on the inner P-port step
and that requires either adding material through aluminum welding or pouring
epoxy in there before boring.   Can JB WELD do it? Will the localized heat
from welding distort the housing?  We will find out.

I am going to establish make sure the housing is already flat and then have
some inner measurements taken within the housing. I'll monitor inner housing
temperature rise and try to measure how much the housing distorts.  Remember
these two housings are just test pieces.

The fuel injector hole size through the oil injector has not been decided
yet. For structural strength considerations I will drill out the oil
injector boss as little as possible and only use one injector in that
location. The challenge remains finding a short enough injector that perhaps
feeds from the side because it has to fit under the wrap over P port
manifold.


Regards


Doug

Doug, injecting the fuel directly into the chamber is a loser.
Been tried many times before. BSFC is hurt.

If you are still going with EFI I would put them out towards
the ends of the runners. That has proven to help the BSFC
slightly. Gives the fuel more time to vaporize.
That is why Lycoming heats the intake runners by passing
them through the oil pan first.
Also the 3rd spark plug has drawbacks. There is a loss of
compression as the apex seal passes over the hole.

Paul Lamar ...No rotor no motor.

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