Prop governor travel

[Bill.Peyton]

I just installed the all of the quadrant cables and have a question. For the Throttle and Mixture cable, I get full travel on the quadrant which corresponds to full travel on the fuel servo. With the prop governor, I only see about half travel on the quadrant for full travel on the Hartzell governor. The only way I can see to change this is to replace the Hartzell actuator arm with a longer length. I really don't want to mod the quadrant arm shorter as the force is already right at the acceptable range.
Both the engine and prop/gov. were purchased through Vans

 

[aerhed]

Bill, I don't see any need for full quadrant motion on the prop lever. As long as it hits full up top with a little cushion and pulls the arm back fully its good. Just try to rig all three evenly at the top with a little bounce cushion. Vans quadrant arms should actually be drilled a little further from the pivot though as there is barely enough sweep in the quadrant to make travel at both ends.

 

[Bill.Peyton]

I did notice that it required a lot of adjusting to get the full throw on the throttle and mixture. That's a good idea to drill just a little outward of the current hole.

 

[LifeofReiley]

Bill,

If you're hitting the stops, it's good to go. We've got an F1 we routed low... under the cylinders and came up thru the lower ramp to a fabricated holder bracket. Worked out good, same thing, about half lever travel from stop to stop.

 

[pierre smith]

Check RPMs carefully.

Bill, a -10 I recently flew, overspeeded because the governor wasn't set up correctly. Increase the RPM's carefully and stop advancing power if she runs over 2700
, before first flight. Carefully increase power to full thottle, watching for any overspeed and re-set the high RPM stop as necessary.

Best,

 

[Bill.Peyton]

Thanks Pierre

 

[Bill.Peyton]

Follow up on solutions

I spoke with the Hartzell tech rep at OSH. He provided me with a different part P/N 103568, which I ordered and have installed. It has multiple locations to attach the prop control actuator cable. Below is a photo of the installation. I now have full travel and it is easier to move the quadrant lever due to the additional leverage.