2nd Elevator Servo for 7 Channel Receiver. Futaba

Get rid of the gyro, problem solved :silly: :silly:

Chris73 wrote: Get rid of the gyro, problem solved :silly: :silly:

Concur. They didn't have gyros back then in it's day. They had to fly 'em :lol: :evil:

Trouble is gentlemen, this particular model came from Horizon with a receiver/gyro installed as standard because they thought it would be too "frisky" for your average top gun gung-ho rc model pilot! It's definitely a potential trouser wetting experience for the likes of me to fly without one I'm afraid. I tried!

Simon - If all else fails , see if the gyro functions o.k on the Y lead option.
John B did predict the problem.

Colin

Have you double checked the C of G, tail heavy would make it feel really twitchy, also check the expo you are running

Thanks guys for the advice. The c of g is bang on. I'm running minus 50'/, expo on all surfaces with the control surface movements turned right down. Maybe the answer is to use the Y lead with the newly acquired gizmo to get the offending servo to come to the party.

DECISION MADE! The die is cast, Y lead on the gyro/receiver, gizmo installed to make the elevators work together. Happy days, we hope. Gyro seems to work in correct directions, up to an appropriate responsible adult ( Tim Sulley ) to fly the Fury and check it out! However, grateful thanks to JRI for your input, I now have some sort of understanding when it comes to programming my tx.
Simon O

50% expo is a lot, this could also make it feel really twitchy, I will explain next time I see you Simon

Quite right Chris, turned the expo down to 40 '/, on all my models and have to say they feel much better to fly. The Sea Fury had its 1st outing with the gyro in. Tim Sulley took it up for me, still twitchy as hell until he switched the gyro on. What a revelation!! It fllys just great now. I took the controls on the 2nd flight and I felt totally in control all the time. Take offs and landings were great as well. Good old Hobbyking, the Orange s-fhss basic gyro and receiver combined for just £14.50 delivered. Now the model isn't so scary!

Hi Simon, when you use high expo values, typically over 40%, what happens is you will get a sudden increase in surface deflection at mid stick position, almost like a step change, which makes it difficult to control.

I always recommend limiting expo to a max of 35-40% unless you are using 3d throws. If the model is still too twitchy even at those values then you need to decrease the overall throw.