iKon Mumbo Jumbo

[Razorback Flyer]

Ok so Im considering me still new to heli's. Been at it for almost 9 months, but more heavily the last 2. So I can fly and do big air and a couple of flips 3 stories high. I need to understand the electronic adjustments. My heli may fly like crap to a experienced and good pilot. What is Cyclic and Governor gain and what would I see if they were to Hi or to Low. Im flying a Trex 450, 550 and a new Goblin 770. Im still nervous but getting better and trying new manuvers 3 mistakes high. But when I have a question on why is the heli doing something that I my think is wrong. I get suggestions as the gain may be too high. Id like to understand these gain issues and adjustments better. Could someone please enlighten me or direct me to some info where I could understand better.

Thanks
T.

[Daddy]

I'll give it a shot...

Gain determines how much. In this case how much to adjust servos when an input is given in the control feedback loop. One control input would be a gust of wind as measured by the gyro mems, another would be your stick inputs.

If gain was too low the heli would still drift with the gust and may also feel spongy on the sticks.

If gain was too high it would over adjust and try to correct thus getting into a small oscillation (shakes). It would also tend to shake on hard stops like from piros, flips and rolls.

Now gain is actually 3 variables, PID. This link explains it in detail better than I could, the graphs beside each (PID) show it well IMO though. BTW, overall gain adjusts all 3 values and varies slightly in method depending on the fbl unit.

For some reason I get an error linking to wikipedia....go to wikipedia and search, "PID controller"

[Razorback Flyer]

Originally Posted by Daddy

I'll give it a shot...

Gain determines how much. In this case how much to adjust servos when an input is given in the control feedback loop. One control input would be a gust of wind as measured by the gyro mems, another would be your stick inputs.

If gain was too low the heli would still drift with the gust and may also feel spongy on the sticks.

If gain was too high it would over adjust and try to correct thus getting into a small oscillation (shakes). It would also tend to shake on hard stops like from piros, flips and rolls.

Now gain is actually 3 variables, PID. This link explains it in detail better than I could, the graphs beside each (PID) show it well IMO though. BTW, overall gain adjusts all 3 values and varies slightly in method depending on the fbl unit.

For some reason I get an error linking to wikipedia....go to wikipedia and search, "PID controller"

Thanks for that info. I will do a search for it.

[ah_liang]

I guess the layman word is 'sensitivity'.