If you can get the cables cleanly to the tail wheel from the rudder servo, and the servo has a wheel or two arms, you can use the same servo. you could also run a second pushrod for stearing, simular to the way the nose wheel stears. Just keep your arms, both on the servo and on the wheel and rudder on the same side, so the movement is the same as the rudder. You could use an antenna wire tube with a fine music wire for a push-rod, or use a cable pushrod setup. You want to keep the weight low. You could carefully solder a brass horn on the brass hub of the Sullivan tail wheel. Use a z bend in the wire there, and then use an ez link on the rudder servo. Humm, that may be the answer for my Quickee 500. I'll have to take another look at that.

Unless there is a method I don't know of, or I am seeing the rudder in a different light that the photo shows, you will not be able to use a rudder to tail wheel connection for stearing.

Don