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Lynn Hanover wrote:
. At low speeds and idle, the check balls in the crank don't even open to allow cooling oil to spray into the engine. Those balls operate as a function of RPM not temperature.
Lynn,
Many of us in the flying rotary community have modded the crank to remove the springs and balls and replace them with carb jets, as well as replacing the thermostatic plug at the end of the crank with a plug that is always open. This ensures oil flow to the e-shaft bearings/lobes regardless of temperature or rpm.
This is one of Bruce Turrentines recommended modifications.
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