Ok, I have the Walkera 4F200 # blade flybarless, and it is my first CP heli. I have flown it now for about a week. I was interested in setting the pitch up abit from how it came and one time had it I thought where I liked it, but it started shaking at the top end of the throttle. I honestly do not understand how to set the pit /plt correct, I assumed you positioned the stick each time to the setting you enter. (it came with the walkera Pro 2.4ghz transmitter and has a V1 and V2 knob for adjustments. The book is vague on exactly how to do the settings. Can someone explain how to set it up correct? I would like it to have more lift at a lower rpm so hover is below half throttle if possible. I read a forum where the setup was very close to what I was looking for, but not able to do it. I would have pretty good experience flying but fixed pitch for 3 years and several helis and flying planes scale for over 35 years, I was bored with the FP helis as they are very limited to zooming around, and I know I am not ready for any 3d stuff for quite some time.

to my understanding the V1 knob adjusts the pitch curve, meaning what pitch your blades will have at given percentages of throttle (example 40% throttle= 3 degrees of pitch) adjusting the knob counterclockwise will lower your pitch range, giving you high pitch at lower rpms, but this isnt always good as too much pitch increases blade resistance and slows head speed on the heli which can overheat the motor. The V2 knob adjusts pitch range, this is the knob you would want to turn up if you are looking for more pitch capability out of your heli. Turn the knob counterclockwise when the Plt Pit function is selected on the Tx, this will allow your servos to have a further range of motion and thus grant you more pitch range. Also the dual rate (D/R) switch is something to look at if you havent alredy. With the switch down, the servos have 50% travel, with the switch up the servos have 100% travel ability making the heli much more responsive. Hope some of this helps, im still learning all the trimming and throttle and pitch curves as well, kind of complicated by the complicatedness of it all makes it that much more interesting!

you might want to check out this page, this post, this thread, and pay attention to 60something.... it worked for me

http://helifreak.com/showthread.php?t=264733&page=12

Thanks for the help, I got it done now and it is alot better, I increased the pitch so it lifts off at about a little over quarter throttle and then just added a few degrees as the throttle goes up until it was at full pitch at open throttle, rotor blades sound alot louder and it really smoothed out for hovering..