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HelicopterFlybarless Rotor Head SystemsBeastX › Tail looks fine on the ground, but no control when flying
01-24-2012 10:02 AM  6 years agoPost 1
astro-g

rrApprentice

Wellington, New Zealand

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I tried to maiden by trex600/microbeast tonight, and there is obviously something wrong with the tail setup:

When I took off, it hovered nice and stable, zero trim or corrections on the cyclic, but it began to make a very slow left piroette, I fed in right stick all the way to the edge, and if anything, it got a little faster. I put the heli back down safely, but I cannot figure what I might have done wrong.

The gyro and stick inputs seem fine on the ground, everything is moving in the right directions, and reaching the end of the travel.

Does anyone have any ideas about what I may have done wrong?

Beating the air into submission

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01-24-2012 11:39 AM  6 years agoPost 2
FloridaHeli

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jacksonville, florida

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If it did not do it on the last flight and there was no crash since the last good flight then check your yaw or rudder trim. It could have moved when you inadvertently touched it.

Good luck.

This hobby is WAY too expensive!!

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01-24-2012 08:44 PM  6 years agoPost 3
astro-g

rrApprentice

Wellington, New Zealand

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It was my maiden flight with the microbeast installed.
I'll check the trim tonight, but I set my radio up with trim increments of zero for this machine, on the understanding that tx-trim was bad.

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01-24-2012 11:51 PM  6 years agoPost 4
mylee

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Rochester, UK

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Is your tail set-up mechanically correct? i.e will your heli hover, without tail drift, in non heading hold?

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01-25-2012 12:00 AM  6 years agoPost 5
astro-g

rrApprentice

Wellington, New Zealand

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mylee

I dont know - It was getting dark, and I was the last person at the field, so I decided it wasn't time to experement.

When it was flying, it seemed almost ok, the lift piro was only ~ 1/3 turn/second. apart from the near or total lack of control, I would have called it a good maiden.

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01-25-2012 12:38 AM  6 years agoPost 6
unclejane

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santa fe, NM, USA

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It sounds like your symptom is no tail control input from the transmitter at all, at least once the heli is flying.

So I'd say troubleshoot your rudder connection from the radio to the microbeast. If you're using S-bus (i.e. a futaba S-bus enabled RX), make sure the rudder channel assignment is correct (the factory defaults are correct for the 8FG for example, but might not be for other radios) - tho I guess if it works on the bench it's probably right. Otherwise, make sure the connection however you have it setup is solid.

Maybe vibrations are disconnecting the rudder input in flight (and it's just managing along with just the tail gyro)...

LS

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01-25-2012 02:12 AM  6 years agoPost 7
mylee

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Rochester, UK

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I only ask because I had a similar situation while setting up a friends 700.
Everything will appear good on the ground, but the tail displays some strange things once you get flying.
If you had no tail input it wouldn't work at all, on the bench or in the air.

Try the basics first.

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01-25-2012 09:52 AM  6 years agoPost 8
nickwap

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Berwick-upon-Tweed, Northumberland, England

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Tell us the full specs of the Heli and Radio gear I have set up several Beasts not seem a problem like this, I would guess it's something in the set up.

Nick

"Give me another one, this one's broke!"

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01-25-2012 11:02 AM  6 years agoPost 9
dgoss999

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UK - Lancashire

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Check out the Instruction book (ver2) page 66 'Free spinning range' and also the Par'B' Control Behavour notes on page 63.. to see this is not the problem..

/DG

"Believe none of what you hear, and only half of what you see." • Benjamin Franklin

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01-25-2012 11:38 PM  6 years agoPost 10
astro-g

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Wellington, New Zealand

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nickwap: the heli is a trex600 nitro, airtronics servos on the swash,
some nasty jr on the tail, which replaced the 9254 I blew up the other day.
The transmitter is a jr dsx9, and I'm using the full size receiver.

dgoss999: I think my manual only went to ~55pages, I dont have it right in front of me right now.

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01-26-2012 08:49 AM  6 years agoPost 11
nickwap

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Berwick-upon-Tweed, Northumberland, England

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Quick guess,
check that you have the settings for the servo's correct, especially the tail, in fact I would redo the complete tail set up.
BeastX servo list here

Jr are different to most.

Also make sure that you are on the correct software version and use the correct manual to set up, if you are not on V3.08 update it, you need the USB cable

HTH Nick

"Give me another one, this one's broke!"

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01-26-2012 10:01 AM  6 years agoPost 12
Peterr

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Queensland Australia

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When you switch hh> rate mode , do the lights on the Beastx change ?

Check that rudder and Gain leads are in the right ports, ,in both rx and beastx.....

E ,N ,G Whiplash's;Spectra G's;Stratus;E&N Razor,Fury 55;Furion6;TSA 600N, 700N, 700G;; Be

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01-26-2012 09:54 PM  6 years agoPost 13
astro-g

rrApprentice

Wellington, New Zealand

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Peterr:
the rudder lead is correct, because the tail servo works on the ground.
the gain lead is correct, because the light changes color.

The gain values on the other hand...? Probably wrong.

On Saturday I'm going to pick up a new (savox 1290mg) tail servo, go back out to the field, and try to get it running properly.

Beating the air into submission

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01-27-2012 08:08 AM  6 years agoPost 14
nickwap

rrVeteran

Berwick-upon-Tweed, Northumberland, England

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Did you check the Beastx tail servo settings Points C and D in the setup menu?
Gain settings that I use are 25% for rate and 75% for HH (JR9303)
start with these and adjust as required.
Ball 13mm out on servo Arm.
There is some thing wrong if you are considering a 3rd tail servo.

Nick

"Give me another one, this one's broke!"

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01-27-2012 11:33 AM  6 years agoPost 15
povern

rrApprentice

LF, MN

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Sounds like there is trim or some other setting that is different between flight modes.

Paul

Screw It, I'm gonna fly
Synergy E5, E5s and Logo 800 xxtreme
vControl and Neo

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01-28-2012 02:14 AM  6 years agoPost 16
astro-g

rrApprentice

Wellington, New Zealand

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Paul - no trim - no flightmmodes, the heli never left normal.

Nick: I left seetings c & d as default.
The default gains on my Tx are 36% and 76%.
11mm on the arm.
I did have to adjust the endpoints (setting E)

I'm going to go through all of this again right now.
Thank you.

Beating the air into submission

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01-28-2012 07:04 AM  6 years agoPost 17
astro-g

rrApprentice

Wellington, New Zealand

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I've fitted the new servo,
I also updated the firmware on the beastx from whatever it shipped with (2.0.0?) to 3.0.8
After updating the firmware I had to re-run the setup.

Somewhere between those three changes, it seems to be fixed.
It still wants to turn to the left on take off, but I can control the tail now.
My pitch curves are horribly wrong, no-where near enough pitch on at take off, I clearly need to think about the pitch setup.

25% normal gain (jr style) was way to high, even when I backed the headspeed off, going back to the tx default 37% worked much better.

The whole thing wants to drift forwards and left, I think I need to go over the servo centering again.

Other than that, I'm mainly wishing I was at the club field, and not my back yard. I need more space to test this properly....

Thank you all for your help.

Beating the air into submission

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01-28-2012 11:32 PM  6 years agoPost 18
Peterr

rrApprentice

Queensland Australia

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Suggest you run a 0-50-100 pitch curve , especially during setup ! Then if you want less neg pitch in N mode , take the 0 to 25 or so .AFTER the setup is complete...

And the supplied tape is next to useless , try 3M , Scotch , 4011 tape , very thin and firm ....

E ,N ,G Whiplash's;Spectra G's;Stratus;E&N Razor,Fury 55;Furion6;TSA 600N, 700N, 700G;; Be

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HelicopterFlybarless Rotor Head SystemsBeastX › Tail looks fine on the ground, but no control when flying
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