increasing rudder responce

[twjsb]

I have a 200 srx and find the rudder to be less responsive that the cyclic. I just got a 450x RTF so now I have a dsx6i which I am going to use with the 200 till I am ready to fly the new bird. I know I can set a - expo on the rudder to speed it up in the middle but I don't like the idea of non liner response. Will setting the travel adjustment to 125 in both direction give me faster response but keep it linear?

my thought was that if the say one inch movement of the stick normal gives 100% command and the 1/2 inch movement would then give 50% command. If I make the travel 125 then the 1 inch has to give 125% command so 1/2 movement would be 62.5% thus making it more responsive and since there is no direct servo control it can hurt anything my trying to move the servo to far.

[Xrayted]

It won't hurt anything to try, but it may make no difference. This is one of the problems with motor driven tails. There is always a spongy lag to the rudder response because the motor simply cannot spin up fast enough to give instantaneous changes for right rudder.

Left rudder is achieved by the motor simply slowing down and allowing the natural torque of the main rotor to turn the heli, so left tends to be quicker than right since the torque is helping.

Also, the ESC controlling the tail speed may already be at max signal at 100% rudder, so anything above may yield nothing more.

All you can do is give it a shot, but what you are wanting comes better with variable pitch tail designs.

[ArchmageAU]

Originally Posted by twjsb

...
my thought was that if the say one inch movement of the stick normal gives 100% command and the 1/2 inch movement would then give 50% command. If I make the travel 125 then the 1 inch has to give 125% command so 1/2 movement would be 62.5% thus making it more responsive and since there is no direct servo control it can hurt anything my trying to move the servo to far.

Close enough. Increasing travel adjust will increase tail rate on a 200 SRX.

If 100% is 300 degrees per second rotation rate, then 50% is 150 degrees per second rotation rate (depends on how long you hod the stick for as to how far the gyro tries to rotate it). 125% will be 375 degrees per second rotation rate in the above example.

The onboard gyro is limited as to how fast it can physically move the tail, so you may be commanding 375 degrees per second, but physically the heli may only be capable of 300 degrees per second CW (CCW is determined by main blade speed on a separate motor driven tail heli and is often WELL in excess of this number).