Originaly my design had a single S9204 Servo steering all four wheels, I recently did a Dual Steering Servo modification and this page outlines the new parts and assembly.

Thats $200 worth of servos sitting there! The Futaba S9204 Servo has 132 oz/in of torque and Im using two of them! This modification allows me to steer the front and rear wheels simultaniously or independently thanx to my Futaba 3PJ radio.

This picture shows the Futaba PCM-1024 Reciever on the new Reciever Mount bolted on to the Dual Servo mount.

I cut the excess servo wires off and crimped on new plugs using a specialized tool.

I also redesigned the Steering Cable Routing blocks with a more streamlined path for less resistance. This picture shows the cable housings glued to the Cable Housing Ends and the new Cable Routing Blocks. See the curved slot on the Routing Blocks? That was cut on a Sinker EDM.

This is the pile of parts sitting on the work bench at Polcraft during the assembly.

Because I have two Servos now I had to build two Servo Savers so I used the concept from my GEN-II Servo Saver design and applied it to this, the GEN-III. This picture shows the Ball Bearing Linear Slide being aligned with the Stainless Steel Servosaver / Cable Clamp Plate. The Top piece is the Servo Saver Slide and its made from Titanium.

My Locking Servo Saver design holds the Servo Link rigid untill a preset load is reached, then it pops. These are set to pop @ 8lbs. They automaticaly reset themselves just like a standard servo saver only way heavy duty.

This picture shows the first Servo Saver in place with the Steering Cable ready to be clamped to it. In this view the Ball Bearing Linear Slide can move left to right about 7/16" pulling and pushing the Steering Cable causing the rear wheels to turn. See the Axle Assembly for an idea of how the steering cable connects to the Axle.

The Dual Servo mount has two dowel pins that locate in mating holes on the Chassis and the whole assembly is held inplace with two #6-32 screws. The batteries are hooked up so I can Origin the Servos.

This picture shows a close up of the Dual Servos and FM Reciever bolted inplace.

My Machined Servo Links complete the connection and provide smooth opperation with 660 bearing bronze bushings. I used Hangar-9 machined aluminum Servo Arms with my Stainless Steel Servo Arm Post Addition. I was blown away at the amount of deviation between the two Arms I used, you would think that a CNC machined replacement would be precision, not for Hangar-9. :(

This picture shows the linear alignment of the Servo Arms and Servo Savers. The Action of the Servo Savers is very linear.

This modification gave me eight times the Steering Power of my first design!