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Tracy,
I recently switched from pre-mix to OMP on my 3-rotor. The 20b OMP
uses a stepper motor instead of a lever. The stepper motor controls a
plunger which regulates the amount of oil injected for a particular
load. I removed the stepper motor and built a plate with a 1/4-20
screw for adjustment. I have it adjusted so it injects 1 oz of
2-stroke per gallon of fuel burned. It uses Richard Sohn's OMP
adapter connected to an external reservoir.
On a side note, I contemplated using a 13b pump (using the 13b OMP
adapter), but it is a smaller pump. I was concerned that it may not
have the pumping capacity to supply a sufficient amount of oil for the
3-rotor. So, I went with the heavier 20b OMP.
Also, I fabricated new steel lines from off the shelf brake line
material purchased from O-Reilley's AP.
Mark
On 11/28/12, Tracy <rwstracy@gmail.com> wrote:
How have you guys using the OMP adjusted the injection amount? Have you
found it good enough to set it to maximum and just let the engine rpm vary
the amount? If not, about what percentage of the adjuster lever travel
did you end up with and what oz per gal of fuel did that equal?
Any info appreciated!
Tracy
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