Capi's G5 Head Setup 101

[Tronix]

hey capi, you say to adjust the small links to adjust pitch. however, the manual shows this pic



so which do i adjust when i have my pitch gauge on there? i'll be in that chat :/

[DominicD]

With the more aggressive setups adjusting the small links result in smaller pitch changes allowing for more fine adjustment of the grip pitch.

[Tronix]

so its ok to use either then. i guess i'll adjust the long links for pitch setup and adjust the short for blade tracking then. or vice versa?

[DominicD]

Yeah it depends on your mixing ratio, the point is that you want to adjust the links that results in the lowest pitch changes on the head.

[halfcab1981]

I also have a question. How high should the swash be at mid stick. For some reason, no matter what I do, even with relatively tame swash mix settings (+/- 10.5 degrees pitch and cyclic about 6 degrees) I still get a fair bit of binding of the left and right cyclic servos at low stick when I roll. Could this be an incorrect swash height?

[jurassic5]

Hey,

My G5 build is done thanks to you. I want it to be setup perfectly. I'm now focusing in depth in the head setup.

It's far from perfect. I leveled the swash with a leveler on the whole travel.

I'm running these swash values :
AILE -40%
ELEV -50%
PIT. + 60%

Question 1 : My swash height is 10.26mm. Do I need to up it a bit to have more cleareance ? lets say to move it until I have only 1mm from the washout base?

Question 2 : Do I have to lower again the swash values to avoid the pitch/aile servo arms to touch the frame when I'm at low stick with full right aileron stick on and full low elev stick on ?

Photos

- Low stick



- Mid stick



- High stick







Cédric

[DominicD]

Your swash plate is prolly alittle on the low side but i would leave it for now as any change in the swash will require you to completely redo the head setup.

[jurassic5]

Hi Capi,

Honestly I want it to be perfect. This is what I'm gonna do:

- Level up the swash plate with 2 turns on the servo links
- make the lower mixers at the same level by lengthening the two linkage that goes from the flybar cage to the mixers.
- check 0 pitch at middle stick first with the smallest rotor links (instead of the longest that goes directly to the swash)

What swash values are you all running ?
With the 1700kv and 12T (I don't have a tachometer), what RPMs are you all running ... and what value on the throttle curve ...? 70% ?

Cédric

[DominicD]

At midstick my swash is 12mm from the frame. My swash mixing values are

Pit -65 %
Elev 65%
Pit -58%

[jurassic5]

Hi Capi,

I just read again the first post you did on how to setup the head.

I did again from almost scratch one part of the head associated to one blade holder.

- I have 12mm has you do for the swashplate height.
- got -11 / -0,2 / +11 pitch
- got 8° of cyclic

that gives me the following swash mix values
AILE : - 60%
ELEV : -60% (same value as aile as you recommended in the #1)
PITCH : +58%

But I still have an issue with the servo arms binding.

When I'm at low stick, full negative and apply aileron or elev, works fine. As soon as I apply full low elev + full right (or left) aileron the pitch or (aile) servo arms touch the frame

How can I fix (if it's possible ... this binding?) - Do you have the same behaviour on your g5 ?

Cédric

[DominicD]

The arm binding alittle isnt a big deal, you will never be using full cyclic and collective at the same time.

[jurassic5]

Capi,

Thanks for the feedback. I just got a perfect rotor on one side, got to adapt the linkage on the other side with same linkage length.

I never noticed such binding on my TREX, cause the servos (and arms) have not the same position.

I think that my heli is now setup for a "normal use". The binding should be documented in the manual

Many thanks !

Maybe I should get a cyclic ring to avoid some mistakes ? I just don't know ... maybe I'm that kind of pilot that sometimes goes full aile, full elev, full pitch !

Last, not least... what value on the throttle are you using ? I don't have a tach to check it

Cédric

[DominicD]

Nah no need for a cyclic ring. Even if you do go full cyclic and collective the servo will just buzz no big deal. ...... your heli will be bogging and falling out of the sky at that point anyways On my flybared G5 i have the 1700KV motor on 12T and my jazz is set to 85%. But i use a pitch curve

0 , 12 , 36 , 50 , 63 , 81 , 100

Without the softer pitch curve I found the collective was over powered and didnt match the cyclic but that was for my style of flying which is mostly piro stuff and not pop and lock. I'm glad i could help you with your G5 setup. Once you have the G5 setup properly you will just fall in love with it. The big thing you will find is the tail control, there is almost corrections needed to hold the tail in an inverted hurricane, you cant say that about a rex.