xview

Hi guys,

Got my Esky 4ch a couple of weeks ago, since i did'nt had any experience with rc heli's i tried some adjustments on the gain and proportional.
after that i had a crash, i just was'nt in control anymore[:-]
i forgot what the factory settings were. did the gain and proportional were set to 12 o clock?
what do they do by the way? is gain to add more power? , i tried to move it to the right and it goes to 2 o clock, i can make an adjustment to the left by more than an hour (if you know what i mean)[8D]
Does the proportional adjusts the tail sensitivity or does it control more the trim settings?

best regards
kurt

disguy2k

The gain is how sensitive the gyro is to side to side movements, turn this down only if the tail keeps swinging back and forth. The proportional is how much the gyro will drive the tail motor. It is best not to play with these until you have the cyclic/rudder controls trimmed in nice. This will only affect the heli when you are changing throttle. So eliminate as much drift as you can with your trims, then crank the gain up all the way, and the proportion at the 12 o'clock position, and adjust as needed.

Too much gain the tail will wag, too little the heli will spin clockwise when throttling.

Too much proportion, and the gyro will drive the tail too hard (overcorrect) Too little will be the same as not enough gain.

xview

thx disguy

tanasit

The 2 terms being used on the all in one controller are similar to GAIN and PROPORTION on the other controller.
The GAIN or LIMIT will set the strength or sensitivity of how much the rudder response to the yaw movement, normally set at 90% and go down from there.
The PROPORTION or DELAY will dictate the amount of signal sending to the rudder control per unit time, again good starting point is 90%.

The DELAY should be set first, you want to set it so that the rudder speed is proportion to the rotor speed. If the heli is on the ground and the throttle is a lowest position, move the heli side to side by hand, if the tail spins you have to decrease the DELAY.
Then fly the heli and adjust the LIMIT, if the tail osscilates then the gain must be reduced the LIMIT but if you reduce it too much the nose will not stay put.

One manual suggests that you set both at 90% then go down from there if needed. On my Esky 3D, the gain stays around 85% (arrow points at 7 o'clock) and the proportion is about 75% (arrow points at 3 o'clock), this is with 1800 mAH lithium pack.

Look down, the rotor turns clockwise so the body would want to counteract by turning to the left (nose to the left that is), now come the rudder to help pulling the nose to the right (pushing the tail to the left that is). So if you need to trim the rudder to the left (nose moves to right when fly), which means the rudder has TOO MUCH power then you must LOWER the proprotion by turning the pot counter clockwise. If the tail oscillates, then the gain must be reduced (as mentioned above).

It is okay to have to adjust the trim on the TX, sometimes it changes with ambient temperature or the efficiency of the motor(s) (low battery too).

disguy2k

Sometimes drift? Our Txs drift when using them on FMS!! Although, flying with a 'real" Tx is almost too easy

The 3D version uses a slightly different Gyro board. on the FP version you have a range on the pots of between 10 o'clock and 2 o'clock. (3D also has a touch more rotating mass to correct for too )

xview

Thx tanasit for the detailled explanaition.
I adjusted gain and prop back to 12 o clock, i believe that were the factory settings.
will try it out when i get my spare parts.
ordered them at 24/12 at ejbshop (Holland) and still waiting for them[:@]

greetz

Kurt