Right...I've had an hour or so playing with the above kit...It's ready built so all you need to do is solder the wires on to the controller....as long as you require them.
Now...I reckon this is going to be a pain in the shebs at best.
With my head in a standard bucket I can't get the servo in to connect straight onto the pivot of the rf stalk.
This means the servo would need mounting at 90 degrees from the stalk, then something attaching it to the stalk.
Most obvious way of going that is either cog wheels (gears) or a push rod.
Gears = finding or building the cog wheels you need - one that attaches to the servo and one on the stalk. These then meet so as you turn the servo and attached gear the stalk turns too...

Something like that but much smaller and alongside your head.
The other option...which I've explored a bit more is a pushrod system.
Basically the servo comes with arm things called horns.
One horn mounts on the servo. Attach another to the stalk pivot and connect the 2 with a small metal rod (bent paperclip).
The theory is that at the servo moves it either pulls or pushes on the rod that pulls or pushes the pivot point of the stalk.
This is used pretty heavily in model aircraft...

The push rods move the elevator and rudder flaps but they don't generally do it at 90 degrees.
Either way I think is going to be a pain in the shebs given the room inside the bucket.
If I have any sudden revelations I'll let you know
