I have a flitecraft cub and it is very hard to keep stable on the ground. Someone suggested to bend the tail wheel backwards in order for it to be more stable, but the plane tends to turn the whell to the front. The wire that holds the wheel is connected directly to the rudder and I feel it puts too much resistance on the servo. Any ideas?
Should I not bend the wire that holds the wheel at all or should I bend it backwards to make it more stable?

If you throttle up on taxi and give no TX rudder input at all, does the plane want to weave from side to side on it's own or merely maintain either right or left tack alone? Answering that question will give you a better idea of what is wrong.

And yes, the tail-wheel should be well aft of the tail-wheel assembly's pivot point or hinge.

Possible problems:

1. Slop in control rod at servo or rudder horn or both.
2. Control rod flexing.
3. Tail-wheel wire diameter too small for tail-wheel hub.
4. Tail-wheel wire slop at rudder attach point.
5. Excessive gap between rudder and vertical stabilizer (fin).
6. Loose hinge, hinges.

check it out......

You'll hear a lot of people complain that all cubs are squirrelly on the ground. It may not be a particular problem with your setup, but with the design of the cub itself. You'll typically need to be on the rudder as you add throttle slowly to keep the cub tracking straight during take-off. To minimize the problem, try adding a little toe-in on the main landing gear, ie the wheels point toward the centerline of the plane.

Thanks I will try those things on the field. I'll let you know.

Keep working at it, but if you don't succeed in taming it, it won't be the only squirrely Cub in BC.

kick it