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HomeAircraftHelicopterHelicopter Main Discussion › Cyclic pitch question
01-07-2015 07:30 AM  3 years agoPost 1
DeathByMonkeyDk

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Central Iowa

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How do u check what cyclic deg I'm running ? Do I put the blades over the tail boom and check with a pitch gauge
It's a e360 with a v bar I set it to 8 deg in the software like it said to so does that mean I'm running 8 deg or is that just a reference for the v bar

MJM

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01-07-2015 08:45 AM  3 years agoPost 2
cabeng

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South africa

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pretty much yes, Its just a ref point for the v bar algorithms

remember to not get confused between cyclic and collective

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01-07-2015 09:31 AM  3 years agoPost 3
Jacoub

rrKey Veteran

Kuwait

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this is what you suppose to do

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01-07-2015 10:41 AM  3 years agoPost 4
Richardmid1

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Leeds, England

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It is just a reference for the Vbar so it knows your servo to blade resolution to help it work out how much it needs to tell the servos to react.

Forget about measuring cyclic pitch, that is old school and for flybarred helis only. You dial in your roll and pitch rates in the Vbar ('Agility' I believe?) and the Vbar works out how much pitch is required to produce that roll/pitch rate. Just like a tail gyro, you have a huge amount of pitch on the tail but the gyro only uses what it needs to piro and to adjust to interference from wind.

There is a part in the setup where you tell it the maximum amount of cyclic and collective there is without binding, on cyclic alone this can be upto around 15 degrees, it doesn't mean it will use it all to do a simple roll etc.

60% of the time, it works every time!

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01-07-2015 01:53 PM  3 years agoPost 5
ICUR1-2

rrElite Veteran

Ottawa, Ontario

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put your collective to mid stick 0* then hold the right stick to measure the cyclic. for aileron put blades parallel with boom for elevator put blades across to measure.
V-bar uses the measurement to adjust to the heli's linkage geometry.

you'll want to adjust your servo horns to get it close as possible for the best performance of the gyro.

spending time, paying attention

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01-07-2015 02:02 PM  3 years agoPost 6
cabeng

rrApprentice

South africa

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Richardmid1
the 8deg is rather critical in the setup process for v bar , there is no setup where you adjust the end limits , (Mhs brain and others yes )

there is no need to put your stick mid way , once you cet to the cyclic setup screen the software automatically takes the servos to the mid position that you have pre determined when leveling the swash and setting the zero point ,fit your pitch gauge on the blade that should be sitting directly over the boom (needs to be perfectly inline to get an accurate reading BTW) then on the software you select the "Measure" button , the servos will jump making the swash tilt to the right , then by adjusting the slider on the v bar software yo make sure your pitch gauge reads 8 deg different from where you started , if the slider is not comfortably with in the green marks on the slider you will then need to mechanically adjust the servo horns to get the resolution the v bar requires in order to operate at is maximum ability

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01-07-2015 02:15 PM  3 years agoPost 7
Richardmid1

rrProfessor

Leeds, England

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I never said it wasn't critical (although if it's not exact the vbar will still fly ok) I just meant it has nothing to do with how much cyclic is used in flight.

Also isn't there a cyclic ring setting in the vbar to prevent binding at the extremes? There must be some part where you can limit the throw to prevent binding?

60% of the time, it works every time!

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01-07-2015 09:09 PM  3 years agoPost 8
ICUR1-2

rrElite Veteran

Ottawa, Ontario

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in the mini vbar you set the limits with the cyclic slider same for the collective you use the sliders to get between 80 -100 110
and you also check for binding while in the set up mode.

both adjustments are made on tabs 10 & 11

spending time, paying attention

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01-07-2015 09:48 PM  3 years agoPost 9
blackjackdealer

rrNovice

Bondurant Iowa

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v bar
so ill just set it up using the software settings and let the v bar do its thing ..so if it doesn't roll or flip as fast as I want it to then should I move the slider or adjust the rates in the radio? lets say I have the slider all the way up and want it to roll faster adjust rates in radio then or will that have a neg effect on the v bar

MJM

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01-07-2015 09:52 PM  3 years agoPost 10
ICUR1-2

rrElite Veteran

Ottawa, Ontario

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if the slider is too high move the servo ball out a hole or two or get longer arms. During the set up.

your rates are set up with the agility slider on the first screen
if it don't flip fast enough raise the slider to make it more agile

spending time, paying attention

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01-07-2015 11:34 PM  3 years agoPost 11
rcflyerheli

rrKey Veteran

Granbury, TX USA

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Have you gone through the complete setup procedure? I'm not asking to be a smarta$$, but to just make sure you have read all the setup instructions. I've set up a ton of these things, and by now it's a pretty straight forward procedure, starting from the receiver designation to the transmitter setup and so on to the governor setup, if you are using a Vbar governor.

Just follow each tab's instructions and it will tell what needs to be done on that step.

How did you determine your cyclic values, as that step comes way on down the line in the setup process, and after the collective setup phase?

Logo 700, Specter 700, Goblin 700, Trex 700DFC, Gaui X7, Logo 690SX, Logo 600SX; Trex 470 Trex 500
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