I decided to do this as a How-To instead of in my 'MOJO' build log.
I prefer to use the larger servos for my radars as you can run them slower.
I have tried to explain this as simple as i can to make it easer for the novice.
Hopefully i have the photos in order.
Anyway here we go.
9g radar motor.
Remove the sticky labels.
Undo the four screws and pull off the bottom casing.
Carefully lift off the top three gear cogs (remember how they are fitted or photograph them to help the reassembly)
Pull out the small PCB to revel the potentiometer.
Carefully separates the three gear cogs (again remembering there position.
Cut off the small tab on the main gear shaft flush with the bottom of the gear cog.
Cut off the bottom flat section of the main plastic shaft.
Re-assemble and fit the three gear.
Put the top casing on.
Power up the servo and adjust the potentiometer so that you have the required speed and direction you want your radar to turn.
When you are completely happy with the speed of rotation you can apply a small drop of CA glue to the potentiometer to stop it moving if you wish.
Push the small PCB back in.
Fit the bottom casing back on making sure the cable cutout lines up with the cable.
I hope the little video works ok.
I hope this will help you guys but remember not all servos are the same inside.