RE: Airplane rudder gyro  
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All Forums >> Radios, Batteries, Clubhouse and more >> RC Radios, Transmitters, Receivers, Servos, gyros >> RE: Airplane rudder gyro
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RE: Airplane rudder gyro - 9/9/2007 5:19:23 AM   
Gremlin Castle


 

Posts: 1224
Joined: 2/9/2004
From: Arlington, TX, USA
Status: offline 		To further the gyro input here, I flew the Wedell Williams Racer today using the GY 401 set in the rate mode.

It flew off a Petromat runway with a slight crosswind from the right. all I did was line up on the center of the runway and advance the throttle at a normal rate. The take of run was straight with no zigzags and only a slight amount of drift to the left.

Flew loops rolls four point rolls and inverted all with the gyro in the rate setting.

Landing and roll out were straight down the runway with no tip dragging.

At first try it looks like it will aid in consistent take offs and landing roll outs. We will see how it likes the asphalt at Bomber Field the coming week.

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RE: Airplane rudder gyro - 9/9/2007 5:57:29 PM   
Big_Bird



Posts: 3334
Joined: 12/18/2001
From: Arlington, TX, USA
Status: offline 		We had a great time yesterday at the Golden Triangle Golden Age Flyin at Joe Pool Lake in Grand Prairie Texas. As you can see GC flew his Wedell Williams racer and I flew my Bucker Jungmeister two times with AVCS mode on takeoff. The takeoffs were perfectly straight and of course not touching rudder. The rest of the flight was in rate.

The reason that I didn't make a third flight was that I lost the tail wheel assembly on the second flight. I bought a new tail wheel and bent a new 5/32" wire. It's ready to go for Bomber Field.

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Ken
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       Post #: 102

RE: Airplane rudder gyro - 9/10/2007 11:05:26 PM   
Flyfast1


 

Posts: 395
Joined: 9/25/2005
From: Livermore, CA, USA
Status: offline 		Ken,

Your Jungmeister is a beautiful plane. The other two are also really nice.

-Ed

(in reply to Big_Bird)
       Post #: 103

RE: Airplane rudder gyro - 9/18/2007 3:26:23 AM   
Big_Bird



Posts: 3334
Joined: 12/18/2001
From: Arlington, TX, USA
Status: offline 		The three of us (above) had a great 5 days down at Bomber Field. We got back Sunday afternoon. Jim flew his 1/2 scale Spacewalker II probably 10 times. He built his own steel mufflers and it produces great smoke. He used over $45 in smoke oil. He won 1st Place Civilian Post 1941.

I put 14 flights total on the three planes that I took (Super Decathlon, Bucker Jungmeister, PT-19). I flew the Jungie 5 times. On all but one flight I had a moderate easterly cross wind. Each time I shoved the throttle forward on takeoff, with the gyro in the heading hold mode, the plane tracked very straight. The only thing that I had to do was use the ailerons to lean into the cross wind. Unless I forget, I'll never takeoff with that plane again without using heading hold.

GC flew his Wedell Williams racer several times but only found it necessary to leave the gyro in the rate mode. That is one super flying plane.

Mack Hodges was there with his awesome flying 98# B29 powered by 4 ZDZ80RV engines. He puts on an unbelievable aerobatic show. There were probably 350 planes there.

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Ken
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       Post #: 104

RE: Airplane rudder gyro - 10/10/2007 12:57:23 AM   
maxun


 

Posts: 484
Joined: 12/21/2003
From: canal winchester, OH, USA
Status: offline 		ok I new in this forum but I got help from a 3D aerobatic heli guy to set up this to a airplane.
I set up my 401 on a 3 position swith on a futaba 9C transmiter.
up position: normal 1%
center: normal 75%
down: avcs (HH): 80%
Ok with the switch in the up positon airplane work normal like is not gyro.
in center move the tail left and rudder move left and the rudder come back to center with out moving the airplane back.
in HH the tail is move left and rudder keep position left and comback to center only if the plane tail is back in the original position.
This set up is installed in a 30% extra 330L is a 3D airplane, I fly 3D and I installed the gyro on the rudder to help me tork roll in hover, I can't do this manuver yet, so I thing this will helpme learn how to do this. What is you guy opinion.
Ohh something else how to swith the gyro off if I get in trouble, all the info and imput will be fully apreciate. thanks.

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< Message edited by maxun -- 10/10/2007 12:59:57 AM >

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       Post #: 105

RE: Airplane rudder gyro - 10/10/2007 3:51:41 AM   
Big_Bird



Posts: 3334
Joined: 12/18/2001
From: Arlington, TX, USA
Status: offline 		maxun, it seems that you have it setup correctly. Up position is actually off on your transmitter, not normal. There is a small dead band around zero that is off.

I am not the one to ask about 3D because all my flying is conventional aerobatics. You know, the kind before 3D was invented. With my Bucker Jungmeister I always use the AVCS (heading hold) mode for takeoff and always go to Normal for the rest of the flight. I love the gyro. On takeoff it makes me look like I know what I'm doing.

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       Post #: 106

RE: Airplane rudder gyro - 10/10/2007 12:52:07 PM   
maxun


 

Posts: 484
Joined: 12/21/2003
From: canal winchester, OH, USA
Status: offline 		yes it is like you say, but I assume that if the gyro is turn off in flight, will be crazy to flip the swicht to normal or HH because the initilization of the gyro, the power has to be off and them on in HH and wait the 3 second for him to know were is neutral. Please let me know if I'm right or not. thanks.
the other question is do I have to do anything with the servo travel on channel #5 for the sencitivity, this gyro was on my heli with a t6xh futaba radio and in order to take the gain down you have to lower the atv on the channel 5, if I do the same with servo travel on my 9c .... Do you thing this will have any effect on the gyro bejaviour?...

(in reply to Big_Bird)
       Post #: 107

RE: Airplane rudder gyro - 10/10/2007 4:11:07 PM   
Big_Bird



Posts: 3334
Joined: 12/18/2001
From: Arlington, TX, USA
Status: offline 		Uhhhh....... maxun you lost me. I don't have a helicopter or a 9C radio. So, I don't know much about either.

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Ken
WACO Brotherhood #70

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       Post #: 108

RE: Airplane rudder gyro - 10/10/2007 7:41:54 PM   
BarracudaHockey



Posts: 10993
Joined: 7/13/2003
From: Orange Park, FL, USA
Status: offline 		You arent turning the gyro off and making it reboot you are just running it at 0 gain which is effectively off.

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RE: Airplane rudder gyro - 10/10/2007 9:24:05 PM   
maxun


 

Posts: 484
Joined: 12/21/2003
From: canal winchester, OH, USA
Status: offline 		barracudahocke you are complely right if I go a extra notch to off is extremelly danger, the giro will move the rudder hard to the right and is not fix one's is off because the plane will be flying and get initialization again will be dificult, plus those fraction of a second can be deadly, with 1% normal the airplane work like it was not giro and don't do the radical right rudder problem thanks.

Thanks big bird for your impusts. I got my New DL50 today and this engine looks great, look like my DA50 but chinese vertion LOL>.
Will see how he will do on my new edge 30%.

< Message edited by maxun -- 10/10/2007 9:26:25 PM >

(in reply to BarracudaHockey)
       Post #: 110

RE: Airplane rudder gyro - 10/10/2007 9:49:44 PM   
bobferguson



Posts: 262
Joined: 6/21/2003
From: Mission, BC, CANADA
Status: offline 		Do any of you guys know of a device to let you turn off a gyro. I use the GWS pg03 and would like to be able to turn it off. I found a device but now I can't find it. Any help would be grreat.

Cheers Bob

(in reply to maxun)
       Post #: 111

RE: Airplane rudder gyro - 10/13/2007 3:40:29 AM   
maxun


 

Posts: 484
Joined: 12/21/2003
From: canal winchester, OH, USA
Status: offline 		well I did my first test fly, OHHH My good, I put the giro in normal 75% and everithing look normal, so I did a hi speed taxi, turn arround and well, I decided to take off.
The airplanes was perfect, but them....OH SSSSHHHH the rudder start to dance LA Conga, at 20 feet in the air the rudder was flapping left and Right very violent, my friends said was is that, so I flip the swith to normal 1% and I stop the Conga, I was so nerves that I fly the airplane for a minuted before I landed with a smile in my face, what a experience. My friend said, do you fffuuc
esperiments in a chip airplane no in a $3000.00 dollar airplane, so I reply well: This is my dosis of adrenaline for today.
I thing I got to go lower on the gain. LOL> My 2 cents for today.

< Message edited by maxun -- 10/13/2007 3:42:01 AM >

(in reply to Big_Bird)
       Post #: 112

RE: Airplane rudder gyro - 10/13/2007 3:49:24 AM   
Big_Bird



Posts: 3334
Joined: 12/18/2001
From: Arlington, TX, USA
Status: offline 		It sure sounds like you had it in AVCS (heading hold). It seems this way because if you takeoff in AVCS and you touch rudder the plane will do the Conga on you. Bad bad news. You did the right thing in switching it back to off.



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Ken
WACO Brotherhood #70

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