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Heli gyro for airplane

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Old 12-03-2002, 04:32 AM
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rclinks2002
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Default Heli gyro for airplane

I was wondering, can a helicopter gyro be used in an airplane? email me at brmitchell@zianet.com
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Old 12-03-2002, 07:02 AM
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Default Heli gyro for airplane

RCL, welcome to RCUniverse! Yes, a heli gyro can and often are used in aircraft. Be sure you understand what heading hold gyros do, however, if you are looking at a heading hold gyro, before attempting to fly in heading hold mode!

for example, in heading hold mode on the rudder, if you do a typical modelers 180 degree reverse of direction using elevator and aileron without any rudder, as you try to make your turn the heading hold gyro is going to use rudder until it turns that model back around 180 degrees to the heading it believes it is supposed to be on. It has no idea that a different input you gave created the change in yaw direction, and it will work until it has returned to that yaw direction.

this is not to say that heading hold isn't GREAT in an aircraft application if used properly! But it is key to know exactly what it does and how it will respond in specific situations.
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Old 12-03-2002, 09:52 PM
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Default Heli gyro for airplane

is it possible to put the gyro on the elevator, or the airerons? it is a futaba G154 gyro (mechanical)
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Old 12-03-2002, 11:00 PM
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Default Heli gyro for airplane

RCL, The gyro can be used on elevator or ailerons, they are most commonly used on rudder.Yes a mechanical can be used but it will give you much lesser quality and precision performance than the SMM gyros made now, which are 2 generations past your mechanical.
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Old 12-03-2002, 11:47 PM
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Default Heli gyro for airplane

Why do you want to waste the time? Fly it, or get a hobbico gyro. They are tiny and they fit nice. You would be better off learning to fly without one.
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Old 12-04-2002, 10:14 PM
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Default gyro

I already know how to fly. A club in my area has a duration glow rc where you fly from the back of a truck and drive around on desert roads. It would be less stressful not always having to correct for winds, for long durations.
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Old 12-06-2002, 04:09 AM
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Default Heli gyro for airplane

Originally posted by rclinks2002
is it possible to put the gyro on the elevator, or the airerons? it is a futaba G154 gyro (mechanical)
I experimented with a mechanical gyro some years ago.
The plane was a Currare Pattern of Hanno Pretner design.
I installed the gyro on the ailerons, and you have no idea how perfect the setup was.

On a windy day, the plane flew on rails. 4 point rolls would stop dead in its tracks, and with the gusty conditions, when I landed, it came in with no wing rock at all.

Today if I were to do it again, I would use Piezo gyros set low, and no heading hold gyros.

Good luck.
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Old 12-06-2002, 10:12 PM
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Default Heli gyro for airplane

What is the main disadvantage to using a mechanical gyro?
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Old 12-06-2002, 10:32 PM
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Default Heli gyro for airplane

Originally posted by rclinks2002
What is the main disadvantage to using a mechanical gyro?
a mechanical gyro will work quite nicely but it draws high current all the time, while the Piezo gyro draws very little all the time, but because they are so efficient, they make the servos connected to them work harder and so the current goes up on the servo. Not too much of a problem on airplanes but it was something to consider on helicopters.
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Old 12-06-2002, 10:37 PM
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Default Heli gyro for airplane

What about connecting another reciever battery pack in parallel with the original to create double the current, but the same voltage?
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Old 12-06-2002, 11:16 PM
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Default Heli gyro for airplane

Originally posted by rclinks2002
What about connecting another reciever battery pack in parallel with the original to create double the current, but the same voltage?
It depends on the battery you are going to use. A mechanica gyro normally draws about 125ma, so if you use a large pack to start with, you might not need and extra battery.
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Old 12-07-2002, 12:34 PM
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Default Heli gyro for airplane

The 154 Futaba Gyro is a very good one, it's just outdated. If you have it, try it. Start with 50% gain.
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Old 12-08-2002, 03:44 AM
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rclinks2002
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Default Heli gyro for airplane

Do you have a 154? Is there a way to turn it off in flight? safely.
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Old 12-08-2002, 03:56 AM
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Default Heli gyro for airplane

Originally posted by rclinks2002
Do you have a 154? Is there a way to turn it off in flight? safely.
I suppose with all the cheap Piezo gyros on the market, the 154 might be a bit hard to find.
There is no way to shut down the 154 in flight if my memory serves me correctly.
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Old 12-08-2002, 12:02 PM
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Default Heli gyro for airplane

I still have a couple of them, but there is no way I know of to shut them off in flight. The same can be said of many of the cheap Piezo gyros out there.
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Old 12-08-2002, 10:12 PM
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Default Heli gyro for airplane

I have a G154 coming in the mail.
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