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Monty let me try to explain it in general terms.
Unfortunately, I do not have any detailed pictures.
The pump is working on the positive displacement
principle. It has a piston-cylinder combination with in-out port control. The
port sequence is achieved by rotating the piston in such a way that the intake
is open on the way down, and the outlet is open on the way up. The stepper motor
controls the stroke for more or less pumping.
Here are the physicals. The drive shaft turns the
piston through a 1:1 worm-angle gear. The piston has a wedge type cut out on the
bottom side which is sitting on a cross pin, spring loaded. When the piston
turns, it moves up and down, in and out from the pin. I do not know exactly how
the control pin is hooked to the piston.
I am at this moment making a replacement for the
stepper motor, to do what you described. I believe the pin is at maximum when it
is pushed in, however, I will have a test run on the pump with my adjuster
shortly, and we will know for sure.
I have the same adjustment gadget, in principle,
for the RENESIS pump, ready to sell.
Hope this helps.
Richard Sohn
N-2071U
----- Original Message -----
Sent: Saturday, December 17, 2005 12:02
PM
Subject: [FlyRotary] 90-91 oil injection
pump
Would somebody out there who is more
knowledgeable than me please educate me on the operation of this
pump?
There is a plunger controlled by a stepper motor.
Then there is the thingy that spins. Then there is some other thingy that
moves in and out.
Which thingy does the pumping and which position
is max oil flow. Plunger in (towards the motor) or plunger out (away from the
motor) my plan is to just fix it in the max oil setting and use 2 cycle oil.
Or perhaps use a set screw to adjust it until the oil flow/fuel flow is the
same as you guys running premix. I will be replacing the nylon crap with
hard lines.
Monty
P.S. Thingy is a technical term. If you prefer
substitute dumaflatchie or thingamabob.
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