ORIGINAL: Greg Cothern
For the tiller arm tail wheel drive try this..cheap easy strong and very easy for the manufactuer. You can make it as long or short as needed.
i prefere it to be on the bottom of the rudder like the pic im posting but i know i can make the arm better just didnt want to take the timeand it can be bigger if you wanted but thats not the way to do it the same size as the tw tiller arm is the size you want with the correct geometry lends itself to the best control of the tail wheel then to the best ground handling.