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HelicopterFlybarless Rotor Head SystemsNoBar › To Those Who Fly "NOBAR"
08-27-2012 06:01 AM  5 years agoPost 1
JKos

rrProfessor

Redondo Beach, CA

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Guys,
If one wanted to take a try at "NOBAR," what flight characteristics should one be aware?

Thank you,
John

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08-27-2012 06:21 AM  5 years agoPost 2
brian94066

rrVeteran

San Bruno, California

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your heli will roll faster than it will flip

and you'll have quite a bit more pitch tendencies

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08-27-2012 01:38 PM  5 years agoPost 3
Lewd Skywalker

rrApprentice

Manila, Philippines

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Just curious, how is a NOBAR setup? Is it the same FBL head and linkages just without the FBL controller but still uses a normal gyro?

Thanks.

SDX FBL | Eagle3 SWM | Trex 600EFL Pro

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08-27-2012 01:41 PM  5 years agoPost 4
Ronald Thomas

rrMaster

Gainesville, Fl, USA

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Yep, that is it. You guys should pm Heli-Cuzz. He has a LOT of experience with NOBAR. I think he has FBl electronics now but he know a bunch about it.....Ron

Team MikadoUSA 480XXTreme, 550SX, 600SX, 700XXTreme, 800XXTreme!!

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08-27-2012 01:49 PM  5 years agoPost 5
wrongler

rrProfessor

Brewerton, New York

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I did try it once, It was very "twitchy" and not anything I was use to, so I landed (barely) and that was the end of that. I think you can get use to it with some practice, I just didn't want to do it!

Bill Whittaker

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08-27-2012 05:47 PM  5 years agoPost 6
Chris Bergen

rrElite Veteran

cassopolis, MI USA

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Might look something like this;

Watch at YouTube

Chris D. Bergen

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08-28-2012 05:09 AM  5 years agoPost 7
GMac

rrNovice

Gurley AL

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Use to fly the old GMP fly bar less heli legand i thank and a little cyc pitch would go a long way. The hover left a lot to be desired.Up stairs in forward flight was not bad it was fast and quick.At that time all we had for gyro was rate mode like a fp153bb Futaba. Good luck with it and have fun.

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08-28-2012 08:20 PM  5 years agoPost 8
GetToDaChopper

rrElite Veteran

Las Vegas , NV

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Might look something like this;
It might, but if this is your first time with NOBAR i highly doubt it, it more than likely will end like this........

Watch at YouTube

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08-28-2012 10:22 PM  5 years agoPost 9
unclejane

rrElite Veteran

santa fe, NM, USA

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The main things to be aware of:
- rotor pitching in both ELE and AIL axis with the wind. Much like a very badly tuned flybar only a little worse. So best to try it in low winds at first until you get used to it.
- holding corrections in in the hover when there's a wind. You'll be surprised at how much you'll have to hold in.

In general, it's perfectly controllable but will give pitching behavior with wind where it didn't before with a FBL gyro on it. So be careful with manuevers like slow piros, that can be really exciting the first time you try it.

I would suggest at first:
- low rotor speed, 1500 to 1600 or so
- a set of heavy FAI blades
- no expo or dual rates (this will exaggerate the amount of stick you have to hold in the wind)
- limit cyclic pitch to 10 to 12 degrees at first.

As for setup, just use regular CCPM mixing in your radio with the servos straight into the RX, just like with a flybar machine (do use a HH gyro on the tail).

other than that, it won't be much different than a bad flybar setup, but with an absolutely off-the-hook cyclic response.

If you do it on a completely calm day, you will hardly even notice you're NOBAR in the hover....

LS

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08-28-2012 11:35 PM  5 years agoPost 10
unclejane

rrElite Veteran

santa fe, NM, USA

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Just curious, how is a NOBAR setup? Is it the same FBL head and linkages just without the FBL controller but still uses a normal gyro?
I already sort of answered this above, but yes the mechanical setup is identical to what it would be if you were going to fit a FBL unit. Only the electronic setup is different. You go straight into the RX with the cyclic servos and set it up with the radio's CCPM software like a flybar heli.

In fact, you want the throws to correspond to certain AFR ranges in the CCPM software just like you would with a FBL unit. I.e. a good ballpark figure is 50% to 60% on the swash to give you around 12 to 14 degs.
Or looking at it another way, it should setup approx. like a flybar head would.

That's to get you in the ballpark, anyway. I think I had mine setup with 55% on the swash both AIL and ELE at about 15deg. pitch. That was pretty dramatic but it gave good overall handling...

LS

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08-29-2012 05:20 PM  5 years agoPost 11
Chris Bergen

rrElite Veteran

cassopolis, MI USA

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Why would it end up like that?

That guy had a flybar and lost the tail...

Chris D. Bergen

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09-01-2012 12:42 AM  5 years agoPost 12
payne1967

rrElite Veteran

uk

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if set up correctly nobar flies very well
even in gusty 35mph winds
to start with use around -4/+4 deg of cyclic pitch and adjust to taste from there

depending if the cofg is correct on the model in forward flight it will pitch slightly
the sceadu nobar i fly is uncommon that it pitches downwards
most pitch upwards

i also fly fbl with an electrionic unit
but the old shuttle i tried nobar was perfect, with an align 3g it was uncontrolable

before i fit a fbl unit i set the heli up with zero trim in nobar
form

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09-01-2012 08:47 AM  5 years agoPost 13
GetToDaChopper

rrElite Veteran

Las Vegas , NV

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i said it would likely "end" like that, not "fly" like that if that is your first time with NOBAR, i guess it all depends on who it is that's trying it for the first time.......

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▲ ▲ ▲ One of a Kind !!!

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HelicopterFlybarless Rotor Head SystemsNoBar › To Those Who Fly "NOBAR"
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