What is Exponential?

[pinchio]

Please help with a definition of exponential as it relates to heli setup. Would like to know how this affects performance of the heli in addition to how it translates to a users stick movements.

Thanks

[concept1]

basically, your stick movements are proportional or liniar to the servo movements when you move your stick 20% you also get 20% of your servo travel.
now you adjust or ad expo so your initial movements of the stick does not give proportional servo movments. for example if you have real twitchy thumbs or just a real twitchy heli, you may set 30% expo, this will make the stick movment non proportional so it will take more stick travel to get the same servo movment as before, but at full stick you will still have full travel, the farther you move the sticks the farther the servo will still travel.

[BarracudaHockey]

Yep. Dual rates lower sensitivity around center by reducing overall travel. Expo does it by giving you less travel in the middle and more at the end.

How it works depends on you, its a personal preference thing. Try 20 percent to start, that makes control response linear, as its actually more sensitive in the center before you start adding expo, at 20 to 22 percent or so its linear, and anything more is softer at center than at the end of throw.

[pinchio]

So what is EXP inhibited do if 20% EXP is linear. Aren't the two perceived to do the same thing with respect to stick inputs?

[BarracudaHockey]

It makes it more sensitive around center.

Its because a round servo output natually has opposite expo built in. Using about 20 percent makes the end movement linear.

When EXP is LIN or Linear, then the servo response is linear to stick movement but the control surface isn't. I'd need pictures to really explain it.

EXP in the swash or throttle curve menu is something different alltogether.