np always happy to share heli stuff with you guys (and gals).

i'd say that the 30mm long can feigao provides a substantial improvement over the 22mm short can. i felt the short can was very waggy during slow left yaw maneuvers, and the long can showed no such behavior. with the short can this wag during slow left would only go away with gains so low they make the hh gyro useless. also, comparing the collective punchout (quickly moving the collective a full +10degrees, then directly to -10degrees, then back and forth several times in a row) the short can yawed roughly 20degrees near the top, and the 30mm stayed locked in. for both motors i used my cf blades and max flyable gain on gyro.

even with my latest setup i still have a barely noticeable bounce back, but it is tolerable and predictable now. i may be able to tune it out with adjustments to the brake/advance/throttle... on my phx10 (thank goodness for castlelink). also, i recommend a 1320mAh with this setup to help balance the tail and have some extra flight time.

like i said, this geared long can 5300kV feigao tail (prop chopped to 5 11/16" for clearance only) has restored my confidence to yank the sticks around. in fact, during my collective punchout testing i was amazed that i was flying a brushless tail with hh that held like it was in rate mode (rate mode usually dominates this test, as long as you get the revo curves right). still, anybody who has tried 3d stuff with in rate mode knows what hh is for, so this setup is a good thing for aerobatics. i was so impressed that i was tempted to try my first low altitude flip. anyways, glad i didn't since i haven't been hotdogging much lately with all this testing so my thumbs are a little twitchy.

[edit: after thinking about what i learned about control systems in ae controls class, my next round of flights i'll focus on adding some braking to stop the bounce back and get closer to symmetrical yaw performance.

given no braking voltage is applied, a brushed motor decellerates faster than brushless. this makes the brushless slower to respond to the gyro in the left direction. also, despite the fact that a brushless takes longer to start accellerating from a stop (and we're talking milliseconds), it's likely the much higher accelleration makes up for the small delay, not to mention how many times the tail won't stop during left yaw. if brushless does overall out accellerate brushes when you take in to account startup time (and i think it would be hard to argue it doesn't), that means a brushless is generally faster to respond than brushes in the right direction. i'm not sure if the brushed tails available have symmetrical performance, but if they exhibit less bounce back than brushless, then asymmetrical brushless performance is the problem that should be focused on. the bounce back problem ppl have with hh brushless can be cured by reducing accelleration and/or increasing decelleration to make the response more symmetrical, which would make the gains match up in both directions, which would make for a nicer performing PID control system.

anyhow, i have a hunch a mild braking action might stop the bounce back altogether.]