Thank you Mark and Gill for the help in wiring up the recoil and sound.
A video of it working before the turret was fitted
![Image](http://i285.photobucket.com/albums/ll49/GRAYHIL/th_panzerrecoil.jpg)
and some photos
Only one part had to be made , a plate to fit the servo to the gun raise and lower bracket, plus a bit of clearance machining for the cable up the barrel holder.
As an extra I also added a guide slot underneath the barrel holder with a cap screw drilled and tapped into the barrel
Graham