Never seen that before, but it's a nice idea.I'd think the easiest thing to do would be to link the "landing gear" control to the speedo so if it drops below eg 5mph, the gear deploys, although you might want a backup attached to an accelerometer (or maybe the brake system, I don't know) such that it would also deploy under very hard braking in case the speedo doesn't "catch up" in time.
Looked into something along these lines after an accident at work left me unable to ride properly (Thankfully a couple of ops have sorted things)How about something like these?http://trikealternatives.com/ghostwheels/
Check out videos on the Peraves Ecomobile. I believe they use a Starter motor to deploy the wheels. Got to be cheaper than pneumatics and looks just as fast.
With all the potholes around there is no system which would be 100% safe May be better off with a 3 wheeler??
I would say electric has to be the way to go.pneumatics will need a store of air, so a reserve tank, way of charging the tank compressor and associated PTO from engine/gearbox to drive compressor , condenser/air dryer,And that's before you start work on the legs.If you do go pneumatic route will you be going with air pressure forcing against spring pressure to lower the legs, kinda like truck spring brakes where air pressure holds brakes off, so if there is an air failure the brakes are applied, or in your case air failure raises the leg. or air actuation in both directions.Spring pressure dropping legs if there's an air failure, I haven't decided if it is a bad of good thing yet may be good if the spring is sufficiently soft to allow bike to lean into bend without tripping it up.The geometry of the wheel and leg would have to take into account the possibility of drop at different angles of lean.But then again soft spring pressure may not be enough to support bike and riderI'm just thinking out loud Lot of stuff to think about, I wish you luck
Would it be possible to mod the center stand(small wheel either side) instead of designing a new outrigger & adding to the weight ?
The fail safe is a tricky one. You could make a case for landing gear up and for landing gear down and both would be valid so I'll have to think about that one carefully.
If you want kids laughing at you at every junction then I guess it's a pretty good idea.