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HelicopterAerial Photography and Video › Helicommand Rigid on logo700
08-31-2009 10:28 PM  8 years agoPost 1
fergus

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Ireland

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Hi Guys,

Just finishing the setup of a helicommand on a flybarless Logo700 and want to run some numbers by you to see what those of you using it think.
Using the software for setup.

I have position mode disabled by taping the sensor and setting the EPA on the pilot channel to zero on the POS side. The channel is assigned to a knob so Horizontal Gain can be adjusted over half the travel (orange LED) with the second half showing disabled (red LED)

The Heli is setup with a mini G tail gyro so the tail gain channel in the helicommand is set too a switch to activate the autotrim feature (Flashes rapid RED when activated).

I am happy that the swash movements are correct. I have collective pitch of +/-10 and 9degrees of cyclic (measured while RIGID mode is deactivated).

Here are some of the settings from the software screens. If any of you are using the Rigid on flybarless especially with a Logo700 I would welcome some feedback.

Rigid settings are knew to me. I think I have them set about right to start with or should they be lower?

I am als wondering if expo should be used from the start and if the cyclic throw should be lowered further.

This heli is yet to fly with helicommand fitted. Maiden is planned for Thursday!

Thanks Guys

Regards

Fergus

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08-31-2009 11:05 PM  8 years agoPost 2
nooobs

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08-31-2009 11:14 PM  8 years agoPost 3
fergus

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Thanks Rosauro,

yes it is for AP and no it's not mine :-( I will stick with vbar for 3d haha

negative end pitch will be adjusted back with the pitch curves in the radio. I am happy the swash and gyro directions are fine (from the diagnostics tab and tilt test).

Is it worth setting fader and adjusting the rigid settings on the fly? Will have a laptop at the field so I guess fixed will be fine.

What kind of % on Horizontal mode works best. Do I risk oscilations if the slider is increased too far?

Will add 20% expo to cyclic.

Anyone got advice on 700/720 blades for AP. Anyone used radix FAI blades?

Edit: oh I missed the pilot channel default setting. Should I set that to 70 on the Horizontal side? Is it not disabled when using the pilot channel via the radio?

Regards

Fergus

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08-31-2009 11:37 PM  8 years agoPost 4
nooobs

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08-31-2009 11:47 PM  8 years agoPost 5
fergus

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Thanks again Ros,

so if I go full travel on the slider and get oscilations where do I make the adjustment? Is it too the Horizontal Gain ( Sensor Total) function? i.e change the 8 to a 7.

Edit: would adjusting the slider endpoint achieve the same thing? I know not the 'best' way but just curious if that would work as well.

Regards

Fergus

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08-31-2009 11:50 PM  8 years agoPost 6
nooobs

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08-31-2009 11:59 PM  8 years agoPost 7
fergus

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Great. Will do your suggested adjustments tomorrow. Need to ground the boom and might try some aluminium foil on the sensor. Have read this thing just hates static.

Ros do you know how much mechanical cyclic pitch your using? 9degrees on this seems a bit high. I am considering shortening the servo arms a bit. I have already lowered the collective and cyclic travels quite a bit in the software and think there is too much mechanical advantage. Any thoughts?

Regards

Fergus

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09-01-2009 12:09 AM  8 years agoPost 8
nooobs

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09-01-2009 06:52 AM  8 years agoPost 9
andrei

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Monsieur Nooobsqois, as the Freanch would put it, not that i'm accusing you of being French, once again i feel the need for speed (not the one you are thinking about), pardon me, i meant the need to mention your outstanding participation on this AP forum.
I may be one of the first aerial whatever on the North American continent to own a Rigid from Jirik at MS Composite USA, and i have experimented widely with flybarless rototrheads with and without it, but i never had the patience and discipline to log any of my setups and anything related, by hard numbers thus eventually allowing future sharing of my experiences and maby help my brothers in arms.
One other reason why i didn't post whenever i felt i can add, was probably due my limited communication ability.
Hat off to vous, N.

Che Guevarra

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09-01-2009 09:01 AM  8 years agoPost 10
fergus

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Ireland

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I just want to second Andreis sentiments and say thanks again Nooobs. You are a real asset to the community Rosauro

Regards

Fergus

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09-01-2009 10:39 AM  8 years agoPost 11
nooobs

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09-01-2009 12:54 PM  8 years agoPost 12
fergus

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What goes around comes around Ros. Thanks for the kind words and your help with this. I will let you know how it goes with the helicommand.

Regards

Fergus

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09-02-2009 12:20 PM  8 years agoPost 13
gtarling

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London

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Fergus - BBT make a series of 'Evolution' blades in your size range and they are mostly semi-symmetrical, reasonably priced, too!

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09-02-2009 12:57 PM  8 years agoPost 14
fergus

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Thanks for that ^

Regards

Fergus

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09-02-2009 09:17 PM  8 years agoPost 15
comet

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Neuilly sur Seine, Fr

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sorry for that,

that first post is sleek

VT "slow&low"

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09-03-2009 02:51 PM  8 years agoPost 16
fergus

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Ireland

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Ok heli is flying fine with rigid without the Horizontal stabilization. As soon as stabilization is introduced the heli drifts left FAST.

Have done the set procedure and the heli is in trim without stabilization. We have also done the autotrim procedure but it does not seem to make any difference. The one thing I did notice in the software is that the unit is not seeing zero values for tx neutral and I wonder if this is the issue.

Regards

Fergus

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09-03-2009 05:58 PM  8 years agoPost 17
fergus

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Ireland

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Ok dialled out the tx neutral settings with subtrim and redid the set button procedure. The above neutral values are now zero.

No change in horizontal mode. Autotrim isn't helping need some help here Guys!

Regards

Fergus

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09-03-2009 06:04 PM  8 years agoPost 18
rerazor

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Mich.

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If clicking reset (resets values not setup) and trimming and set button procedure doesn't work then I would try a couple things.

1. Trim heli with TX in Horizontal mode see if that works.
2. Adjust unit to compensate for left drift.

I have not setup an HC in awhile so I might be off on the above.

Robert

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09-03-2009 06:36 PM  8 years agoPost 19
oneskidshort

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Montreal Canada

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That's odd....if the heli is trimmed out fine with the HC not active then you should be ok to auto-trim.
One question though....after you activated the horizontal mode, did you hold the heli in a stable hover for 8 seconds before triggering the auto-trim switch? The heli needs a full 8 seconds when you first turn it on (can't touch heli for 8 seconds after hooking up your battery) and also another 8 seconds to "remember" a hover before auto-trimming.

Bill

..........there I was, out of altitude, airspeed, and ideas.......

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09-03-2009 06:46 PM  8 years agoPost 20
fergus

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Ireland

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D'oh. I thought the autotrim was done prior to entering horizontal hold. Are you saying to engage horizontal hold then use tx to hold a stationary hover (override the helicommand and it's enduced drift) and then autotrim?

I hope that is the issue. We were doing the autotrim in normal non horizontal mode after an 8second hover expecting it to keep those values when horizontal mode was engaged.

Regards

Fergus

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