Hi everyone,

Having a thread like this will most likely help newbies to gas engine setups plus

I have been looking for ideas for making a throttle arm setup for my Roto35Vi with a Walbro WT571 (I could be wrong on the number, I don't have it with me at the moment). Since it is mounted using a screw, I had removed the arm to mount a ball link on it and lost it. (don't ask [:@]). The arm I am talking about is on the other side of the carb in relation to where the idle stop screw is at.

The end of the throttle shaft is not circular but oval in shape where the screw goes into it.

One idea I have is to use the blue aluminum servo arm that comes with Hitech digital servos by mounting it with the screw and then soldering it in place from underneath to help hold it. That will also allow me to use the exact same arm on the servo to get a 1:1 resolution.

I am looking for other ideas for making and mounting a new arm. Pics and detailed explanations would be great.