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HomeAircraftHelicopterAerial Photography and Video › Can gyros be used instead of helicommand?
03-06-2008 12:47 AM  10 years agoPost 1
djdaveq

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new york new york usa

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i was wondering if gyros can be used to stabilze a helis pitch and roll axis safely instead of using heli command for that. I mean it works with the tail. Anyone ever try this? your input please.

thanks

dave

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03-06-2008 01:42 AM  10 years agoPost 2
Autoeject

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Ashtabula, OH, USA

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I've used gyros to stabilize for flybarless flight. However, it does not work like a stabilization system. The gyros will not have a frame of reference to return to level flight.

Mark Webber
wai-rc.com
Spartan RC Distributor
Outrage Helicopters

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03-06-2008 01:46 AM  10 years agoPost 3
Hogster

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Surrey, UK

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I assume the Helicommand use HH gyros?

Thanks

David

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03-06-2008 01:54 AM  10 years agoPost 4
rerazor

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Mich.

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Nope they use piezo gyros.

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03-06-2008 01:57 AM  10 years agoPost 5
Autoeject

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Ashtabula, OH, USA

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Yep, there's a fair bit more involved than just the gyros.

Mark Webber
wai-rc.com
Spartan RC Distributor
Outrage Helicopters

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03-06-2008 01:57 AM  10 years agoPost 6
Hogster

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Surrey, UK

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How does the HC system provide stability then? Does it not remember what a 'level' hover looks like and adjust the controls to try and regain that?

Thanks

David

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03-06-2008 02:24 AM  10 years agoPost 7
rerazor

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Mich.

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It remembers your "SET" level setting and will bring the heli back to that.

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03-06-2008 05:56 PM  10 years agoPost 8
AceBird

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Utica, NY USA

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Does it not remember what a 'level' hover looks like and adjust the controls to try and regain that?
If it doesn’t it is pretty much useless. Most heading hold gyros are piezo gyros but the algorithms that are used could be and probably are quite different from a standard HH gyro. What I can’t fathom is how Helicommand has gotten around the drifting problems that a standard gyro has when exposed to vibrations and RF. Or maybe this is an issue and those that are using it are keeping quiet when they have the problem. Possibly they are not using the stability function long enough to where drifting is noticed.

Ace
What could be more fun?

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03-06-2008 06:31 PM  10 years agoPost 9
wxyz

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calif*, U know where

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Europeans & their voodoo technology.

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03-06-2008 06:46 PM  10 years agoPost 10
djdaveq

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new york new york usa

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so lets say there is a small amount of drift. thats true we are on the controls constantly so maybe its un noticed. i would say for many of us who dont want to dish out so much money for HC that its worth finding out if there is aosme kind of gyro out there as is, or with a slight mod can be used like heli command. i would not be suing the position hold personally cause i heard it does not work too high up, and i dont want to spend $500+ for basicly two gyros! ideas anyone??

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03-06-2008 09:11 PM  10 years agoPost 11
AceBird

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Utica, NY USA

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ideas anyone??
You have to come up with a way of setting the attitude of the heli for a level hover. Remember when you first initialize your tail gyro there is no motion present. Secondly, if you are the tiniest bit off on either axis you will have to fight the gyro corrections (in HH you cannot use trim buttons). Possibly, you might have to set the gain of pitch gyro different than the roll gyro.

On the surface it may seem simple to use two standard gyros for hover stability but I think as you dig deeper you will find it isn’t so simple.

Ace
What could be more fun?

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03-07-2008 02:53 AM  10 years agoPost 12
GyroFreak

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Orlando Florida ...28N 81W

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Keep in mind if you are using a helicopter with CCPM, the Helicommand does the swash mixing for you. Thats the problem with just adding two gyros for pitch and roll on a CCPM, you need some sort of mixing since it can't be done at the transmitter with pitch and roll gyro connection.

I think about the hereafter. I go somewhere to get something, then wonder what I'm here after ?

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03-07-2008 03:09 AM  10 years agoPost 13
djdaveq

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new york new york usa

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dam gyro your right!

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03-07-2008 05:18 AM  10 years agoPost 14
nooobs

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web

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...

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03-07-2008 08:58 AM  10 years agoPost 15
FCM

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Surrey, England

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If you want to use 401 gyros on cyclic then they wil need some like this http://www.starwoodmodels.com/produ...multi-mixer.php to work properly

Paul.

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03-07-2008 05:39 PM  10 years agoPost 16
AceBird

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Utica, NY USA

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Sure add this do dad and that do dad and now you are not far from the price of the HeliCommand so why go the patch work way?

I would like to see the HeliCommand run on a two or three year old gasser for a whole season and get a report on how much fussing around you had to do in order to keep it working right. Anything can be made to work great once but does it require a lot of babysitting to keep it working? Both the FS8 and the APi required very little fooling around after they were set up. That is something I look for.

Ace
What could be more fun?

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03-07-2008 05:50 PM  10 years agoPost 17
FCM

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Surrey, England

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Just trying to help. Personally, I would not attempt to use a 401 gyro on cyclic. I won't even use one on the tail

Paul.

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03-07-2008 07:05 PM  10 years agoPost 18
rerazor

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Mich.

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The Helicommand is maintenance free. Once you set it up there is nothing else to do. You can autotrim it once in awhile or if you change CG etc.. Much less hassle than IR stabilization.

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03-07-2008 09:25 PM  10 years agoPost 19
AceBird

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Utica, NY USA

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The Helicommand is maintenance free
maintenance free on what?? are there any on gassers?

Ace
What could be more fun?

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03-07-2008 10:07 PM  10 years agoPost 20
rerazor

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Mich.

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Yes there are people using them on gassers and nitros. Make a new post and see how many respond. I'm not getting into a debate with your argumentative self.

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HomeAircraftHelicopterAerial Photography and Video › Can gyros be used instead of helicommand?
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