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HelicopterCentury Radikal G20-30 N640 Hawk Predator › anyone use a roll gyro??
12-18-2003 07:37 AM  13 years agoPost 1
fritz

rrApprentice

San Antonio, Texas 78232

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would there be any advantage or disadvantage to using a simple piezo gyro for roll control, I know some plank flyers use them..........;it would make life easier for me just transitioning into ff flight I think...........fritz

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12-18-2003 01:28 PM  13 years agoPost 2
SteveH

rrProfessor

Texas

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Fritz,

A few years ago, a friend of mine had the same idea, only he put two extra gyros in the heli, one on roll, and one on pitch. I was elected to do the honors on the test flight, and it wasn't bad, however it wasn't good either. We concluded after a very few flights that the same effect could be achieved by simply turning down the rates on those two channels. It did not seem to have any more stability, it just had a lot less response. What response it had prior to the installation of the gyros with, lets say for example 1/4 stick, it then took full stick to get the same response.

If a person feels he just has to have such a devise, I'd recommend one of the auto stabilization units on the market today.

The government cannot give you anything without first taking it from someone else.

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12-18-2003 03:03 PM  13 years agoPost 3
sreuss

rrApprentice

Ontario, Canada

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Add flybar weight! That is the simplest and probably the most effective cyclic stabalization that you can introduce.

Indeed, the flybar and entire rotor head is a giant mechanical gyro! Park fliers are using such gyros for stability because they don't have this natural gyroscopic in their planes.

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12-19-2003 01:34 AM  13 years agoPost 4
fritz

rrApprentice

San Antonio, Texas 78232

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THANKS

I think it isnt worth fooling with..............fritz

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12-20-2003 04:38 AM  13 years agoPost 5
oldfart

rrProfessor

Vancouver, Canada

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Steve H and Stephen R - thanks guys...saved me some typing.

Master Reuss, how ya been? How's the winter out there?

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12-21-2003 03:32 PM  13 years agoPost 6
sreuss

rrApprentice

Ontario, Canada

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Hey Phil,

Its #!$%ing cold, and the days are too short. Grumble, grumble...

Cheers,
Steve

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12-22-2003 05:06 PM  13 years agoPost 7
oldfart

rrProfessor

Vancouver, Canada

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Winters - GRRR

Hi hear ya Stephen....but I do not know what is worst....too cold to fly or sometimes having decent flying weather (as we have had a fair bit of here this month) but not having the time to take advantage of it !!

Phil

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12-22-2003 05:37 PM  13 years agoPost 8
AGRAV8

rrProfessor

Mosquito Coast......Houston Texas

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Phil

it would be the NO TIME to take advantage that would be more detrimental to my flying happiness. The weather is one thing, that you can't control it. The time........that is my fault.

James

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12-22-2003 05:48 PM  13 years agoPost 9
arrio

rrApprentice

Newport News, VA

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I don't think it would be a huge advantange either. Helis today have come along way in design and are by and large as a group pretty stable machines. Haveing said that, I did try this years ago with a couple extra Futaba 153 gyros on elevator and roll. I had to turn them down in rate significantly to get a moderate control response rate and eliminate some feedback hunting. Though they were turned down to near nothing, there was enough authority to allow me to do some amazing (for me) perfectly axial rolls feet off the deck with near complete confidence. The heli had no deviation from the trajectory when entering the roll. I could almost see the the gyros correcting the flight path. It was pretty neat. I only flew the heli (xcell 60 custom) a couple weekends after I got it dialed in. The downside to the extra gyros was that, like on a heading hold tail rotor, you had to constantly fly the heli. There was little self straightening, and the control response was dampended quite a bit. Because the gyros were mechanical, they were a conciderable drain on the batteries ( three gyros on board). The added battery capacity (weight) and the two gyros (weight) and bulky installation, was also a detractor.

"fly it like you hate it"
Alfred (arrio) Riopel "more toys than time"

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