I have a Hartzell HC-M2YR-1BFPX prop on my Rocket, controlled by a Jihostroj governor (marketed as a PCU5000). I am unable to get the engine to turn up to the max 2700 rpm, I can only get 2680. I would really like to get the additional 20 rpm if I can.
What have I done so far?
Are there any prop gurus out there that can tell me what I have done wrong, and what I should do next?
I suspect the governor is limiting the rpm, but don't want to do anything else without some qualified guidance.
EDIT: A little more research indicates I need to adjust the lever on the governor - move it by a spline or two to get a little more travel in the "fine" direction. I will return the prop stop back to its original location.
What have I done so far?
- Confirmed the rpm with an optical tachometer
- Adjusted the governor in half turn increments (started out getting only 2650) till the screw is all the way out.
- Adjusted the screw on the front of the hub by an eighth of a turn, then another eighth for a total of a quarter turn. The manual says this will increase rpm by ~200 rpm per full turn out. This adjustment made no difference.
Are there any prop gurus out there that can tell me what I have done wrong, and what I should do next?
I suspect the governor is limiting the rpm, but don't want to do anything else without some qualified guidance.
EDIT: A little more research indicates I need to adjust the lever on the governor - move it by a spline or two to get a little more travel in the "fine" direction. I will return the prop stop back to its original location.
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