ULSRS Low Rotor Speed RC Heli Teetering Head and crash

[MarioIArguello]

Hi Max, I could tell you had too much teeter , at the start of the video when you teetered the blade up and down.

But I am glad you got it working and really enjoyed your other fliying video!

[MarioIArguello]

I learned the hard way, also, while designing a flybarless MIA House FLY back almost ten years ago, but luckly my fail attempts, before I finally got it right, were at almost no cost . Most important thing is not to have too much deflection of the control links, and I employed delta 3. I made the control arm on the rotor head really short, so I didn't have to use dual rates, or special TX settings, and just the right amount of damping.

[StormyMaxPerry]

@MarioIArguello

RE: Too much teeter - No, just enough to allow the blades to flap without bumping into the flap stop, that's all. I've yet to edit and post lots of other testing video of this rotorhead where I tried all sorts of neg and pos delta 3. The teetering was slightly restricted and flight was wobbly but possible. The best handling was with..........................­...............wait for it............................­...........ZERO DELTA! Yes, I'm shocked too.

[StormyMaxPerry]

What really frustrated me while trying to fly this head was the fact that Bell 206 Jet Rangers use basically the same design. I thought, "If the real one can fly so smooth, the model should too." Wrong! Three years later I'm talking to a friend that had stick time in a Jet Ranger and he said it was a horrible handing machine requiring constant cyclic inputs to keep it from shooting away. I wish someone had told me that bit of info sooner...

[gaetanboiv]

I feel sorry for you.The rotor construction reminds me of the Schlùter helicopters family, But they were restreint with some rubber dampeners. It look like you have too much control.

[StormyMaxPerry]

@gaetanboiv

The center-teetering head is more Hirobo's baby than Schluter and typically had pretty firm damping. What looks like "too much control" (or me overcontrolling the rotor) is actually the rotor doing what it wants all on its own. I didn't dare give it an input for fear it would then over react and crash... I'm thinking of revisiting this project but will have HUGE training gear under it. Thanks.

[jaydekaytv]

Yeeeep, that didn't work! Haha.

Sorry for the loss though man, thanks for making and sharing the video.

[lockout45]

Hey Steve i feel your pain buddy.

Were you running the Actro 32/4 i sent you a while back in that heli ?

Patty

[StormyMaxPerry]

@lockout45

In 2008? :p Got an Actro 32-3 in it. :)