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If the vacuum line is disconnected, the oil being
pumped into the rotor housing drop by drop is not spread cross wise along the
apex seal. Therefore, the oil will do next to nothing in regard to cooling or
lubricating the apex seal.
Whatever oil is pumped into the injection valve
will be misted into the combustion chamber by intake air coming through the
vacuum hose. The vacuum hose is functioning just as the intake manifold, only
with a much smaller volume. The rubber check valve prevents oil from going in
into the vacuum hose.
Richard Sohn
N-2071U
----- Original Message -----
Sent: Tuesday, May 16, 2006 1:28 PM
Subject: [FlyRotary] Re; oil
injection
Sure glad this subject came up. I never
gave it a thought about the rubber caps sitting on top of the oil injectors
needed to be connected to the intake manifold. What are the thoughts on
just the two injectors in the rotor housings, as my intake hasn't any
provision for the two manifold injectors. Is anyone running with the two
rotor injectors from the engine oil pump without using premix.
On using MM oil, I put 1 oz. of MM oil in 5
gallons of gas in the Lycoming and in 50 hours the residue is so thick on the
airplane belly that l have to remove it with mineral spirits. The
residue does not collect when not using MM oil, but the engine seems to run
better with it and a little seems to go a long way.
JohnD
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