New Throttle Linkage

With the new propeller I also purchased a new throttle linkage. So I needed to find the best way to hook it up. So to get the best look at the possible throttle mechanisms I ended up tearing down the engine. Now you can see the governor and throttle linkages clearly. 

The twist throttle linkage

Top view of the engine with gas tank and air filter removed

The air filters for reference

The engine with the gas tank and air filter removed, and screws on the ground

The end results of my research was to identify that the best place to attach the throttle is actually on the exterior handle. 

My final solution

The bare end

A little bit of electrical tape for grip

Three zip ties to hold axially

Another view of the zip ties, also showing the zip tie with the screw attachment point.

After using pliers to tighten the zip ties

The zip ties trimmed

The zip tie mount installed on the front of the engine

Demonstrating the mechanism

With the friction released the external handle does not hold position. And removing my other throttle mechanism we're now able to control the throttle with a twist of the wrist. 

It's a little bit more sensitive than I'd like, but being able to change throttle quickly will be nice. And I suspect that most control will be bang bang style anyway.  Right now there's not much spring return, but I believe that once the governor spins up the return spring will be tighter and pull it back. Since at stop the governor is leaving the throttle wide open the throttle linkage only tensions at the very end. 

Next up I need to get a handle bar to mount the throttle onto. I'm not sure if it should be on the tiller stick or not. A single joystick control would be nice, but possibly confusing/ergonomically challenging if it requires continuous torque.