Quote Originally Posted by Eventorizon View Post
You would need one of the newer digital transmitters to get anything other than the 50% dual rate switch.
This isn't necessarily true - a lot of older transmitters have separate controls for enabling the dual rates and then the amount of dual rate (if that's the correct term) to use, both of my old Futaba transmitters have that system. It works better for me than having to go through menus, but then my preferences are always a bit odd!

The main use I have for dual rates is to reduce turning rate when driving the robot - with mixing, you can turn the rates on the aileron channel down to about 20-40% and that way have full power available for forwards and backwards, but not have the robot spin around like a loon on a carousel with a small sideways movement on the stick. It comes down to personal preference, largely, but they're a good option to have.

(out of interest, James, it's looking like the next AWS will be in Surrey or thereabouts - would that interest you?)