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HomeAircraftHelicopterMain Discussion › Preset Your Heli GYRO With A Slight Lean As You Plug In Power
08-19-2014 03:51 AM  4 years agoPost 41
dkshema

rrMaster

Cedar Rapids, IA

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Don't answer unless we have something WISE to offer? It hasn't made any difference yet.

The wisdom is ignored. As for kooks, I will let the others who stumble upon this thread sort that person out.

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

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08-19-2014 04:10 AM  4 years agoPost 42
TMoore

rrMaster

Cookeville, TN

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Hirobo Quark SG has skids that are higher on one side as stock from the factory. Tilted skids are an old FAI trick.

I'm reminded of this quote: "Ignorance on fire, knowledge on ice.

Delayed Response Operator Not Engaged
AMA SECTION 336 = Good
Drones = EVIL

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08-19-2014 04:46 AM  4 years agoPost 43
JasonJ

rrKey Veteran

North Idaho

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Not moving the swash on an fbl system prior to takeoff is by and large a wives tale. I can stir the crap out my swash on the ground with rotor at speed and nothing happens. I operate my fb and fbl helicopters the same way with no issues. In fact the only tipover I have had was a flybar machine in high winds on landing. I didn't get some negative to plant the helicopter fast enough and the wind got under the disc and there it went.

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08-19-2014 05:38 AM  4 years agoPost 44
Dr.Ben

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Richmond, VA, USA

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I agree. The way you can ball one up is on something like a moving auto with a cyclic command actively in place at touch down and then having the model catch a skid. The system was delivering commanded rate prior to the catch, so it will immediately add more cyclic to try to maintain that rate. Gets fugly fast .

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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08-19-2014 11:40 AM  4 years agoPost 45
icanfly

rrElite Veteran

ontario

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thanks for that drben, exactly what I was focusing toward. That would be the reason why my heli would always tip to the right after it had landed on soft grass where it wasn't firmly set on its landing surface/skids, I would have to right stick a gingerly applied left roll input at touch and spool down.

I read time and time again as guys are fine tuning their gyros they experience a tip over or in air flick of the gyro. My greatest concern was adding a simple tip to help them understand the nature of the mems gyro and the way it mimics the halters on insects. The few degrees of bending the bio mimic'd halteres experience at plug in could be the beginning of the control loop, from which the pid app takes over in future events, YOU SEE.

This recent piece of the puzzle came on the heels of reading up on jet liner cog's, how main and tail control surfaces interact to stabilize the thing. I'm recommending a 3x gyro to a friend who flies planks, planks don't set off the ground into a leaning aspect but helis being complex to understand do. It's nice to set up a heli without nasty turn off surprises, tilted skids and all, size not a factor.

this is interesting

Watch at YouTube

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08-19-2014 02:05 PM  4 years agoPost 46
unclejane

rrElite Veteran

santa fe, NM, USA

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Not moving the swash on an fbl system prior to takeoff is by and large a wives tale. I can stir the crap out my swash on the ground with rotor at speed and nothing happens. I operate my fb and fbl helicopters the same way with no issues. In fact the only tipover I have had was a flybar machine in high winds on landing. I didn't get some negative to plant the helicopter fast enough and the wind got under the disc and there it went.
Same here pretty much, though one difference is the increased rotor stability of an unassisted flybar as the rotor speed slows down. Or, at least, moreso than with an assisted FBL. Basically, on a flybar, you have to pilot the rotor yourself according to the rotor speed. Especially at the bottom of an auto, the control inputs when needed have to be correspondingly larger. A FBL unit, OTOH, takes care of this for you and tries to make the control responses the same magnitude regardless of the rotor speed.

Ages ago, when I flew LOS I preferred doing autos with the FBL unit disabled because I was more accustomed to the flybar response. So I had "NOBAR on a switch" setup with my CGY 750; I'd cut the gyros off before dropping the collective. A NOBAR FBL heli behaves virtually identically to a flybar machine in an auto, so it just felt like home to me.

Other than that, I agree, it's all pretty much piloting. You get used to the fly-by-wire which compensates for things like the varying rotor response with different rotor speeds and you fly with pretty much the same habits.

LS

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