RunRyder - Head Dampener on cyclic response

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Flybarless Rotor Head Systems > Head Dampener on cyclic response

tungym
Heliman
Location: Underground

I found my Trex450 flybarless has odd cyclic reponse. Despite various phase angle setting, the elevator response will always generate unwanted roll response. Most of the time a downward elevator stick will produce a right roll response as well.

I am not sure whether it is due to phase angle shift or too soft head dampener.

So may I ask if a harder dampener is needed for all flybarless setup?

Thanks

10-08-2007 Over year old.

Super-Hornet
Veteran
Location: Singapore

I guess u must have/using a hard damper right?

The forward followed by roll symptom is due to your rotor head is tooo stiff and it can't teeter.

Think about this. When your heli is seating on the ground and spinning, when u apply forward cyclic, the rotor disc is trying to tilt forward but then there is no mechanical part that allow the disc to tilt (damper too hard). Thus something must give way and u can see the disc tilted forward and then bounce back and then tilt sideway.

EDIT: I reread your post again and u said u using soft damper. How soft is soft? can you tilt the rotor (tilt both blade grip up/down) easily?

SH

10-08-2007 Over year old.

LoopZilla
Heliman
Location: Melbourne, FL

I guess it really depends on the exact interaction. What elevator motion causes which aileron or pitch change?

Normally, 2 blade, single axle flybarless heads require more dampening...

LoopZilla

10-09-2007 Over year old.

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Flybarless Rotor Head Systems > Head Dampener on cyclic response

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