Hi

One of my heli's flip response is quite fast but when I do pitch pumping response is sluggish.

blade length = 360mm (480 class)
collective angle = 13 degree
cyclic angle = 8 degree
RPM = around 2800~3400 (?) anyway, increasing rpm didn't help

flight style = 6

feel like internal expo for collective pumping... but not for cyclic movement.

Which parameter should I change?

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"Flying makes me happy" -- Markus Chelios

Hi,

unfortunately there is no parameter that could affect the collective other than the Collective Pitch Range.

If you feel a delay, then it could be caused by a problem with axial ball bearings in the rotor head.
Then it will cause delayed response and also other unwanted phenomenons. But firstly you can notice slow collective response.
So I recommend to check the rotor head.

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Spirit System developer

It was my bad.
Collective was 10 deg. I've changed it to 13 deg. and it feels alright.
I will reduce cyclic from 8 to 6 deg.

I like the rolling. it's quite smooth compare to *BAR.

KH

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"Flying makes me happy" -- Markus Chelios

Great!
If you mean Cyclic Ring, then even 8° could be too low.
This limit should be at least around 9°.

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Spirit System developer

I meant cyclic pitch angle. I think I set it as 8 deg. during PC setup. (May be I mixed up with *BAR - I remember it was 6 deg. in *BAR)
Cyclic ring is 11 deg. Anyway, it feels alright so I will leave as it is for now.

Thank you for advice.

Regards,

KH

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"Flying makes me happy" -- Markus Chelios

What do you mean with "Cyclic pitch angle" being different to "Cyclic ring" degrees?

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Oxy 2 ♦ X-Vert ♦ Warp 360 ♦ Blade 450X ♦ Blade 450X Nightflyer ♦ Goblin 500 (RIP) ♦ 2 X mCPX v2 ♦ night fly mQX ♦ LadyMQX ♦ nano QX ♦ nano QX FPV ♦ Inductrix ♦ DX8 G1

Please, refer this physical ring story for mode 2. Modern FBL uses digital limits. Instead of real ring.

https://rc.runryder.com/helicopter/t217916p1/

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"Flying makes me happy" -- Markus Chelios

RedJacket: Indeed, but our unit has electronic Cyclic Ring
Coco66: I think he meant Cyclic Ring - Aileron/Elevator Range parameter.

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Spirit System developer