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Home✈️Aircraft🚁HelicopterHelicopter Main Discussion › Trouble with Spartan Drifting
08-24-2008 02:48 AM  12 years ago
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blbills

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Provo, UT

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Trouble with Spartan Drifting
For being the king of gyros I don't understand why I'm having issues with this gyro. I'm using it in my trex 500 with a brand new 9257 and over the last dozen or so flights I have noticed that the tail drifs a few degrees a second, almost like i'm in normal mode without it trimmed right. In the last few flights it has become more pronounced as well to the point that I have to feed in rudder to get the heli to do an axil roll.

Any ideas?
Brian
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08-24-2008 04:18 AM  12 years ago
legoman67

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Nanoose Bay B.C, Canada

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what is your gain set at?

also, did you plug into the computer to program? or by flashes?
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08-24-2008 04:23 AM  12 years ago
classic

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So What actually makes it the "king of gyros"? The high price?

Just because top pilots are PAID to use it doesn't make it the best.

Look at the bright side, if you cant get it to work the way you want, there are plenty of guys out there willing to pay top dollar for it.

Hope you get it fixed Brian, nothing like jacking with the tail when your trying to get a heli to fly the way you want it too.

Do you have another servo to try?
Which is worse, ignorance or apathy? I don't know and I don't care!
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08-24-2008 05:11 AM  12 years ago
tchavei

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Portugal

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Thats pretty helpful CJames

Back to topic. Does it drift clockwise or counter clockwise? How did the drift developed? Was it there right from the start or did it only appeared now? Did you change anything on the bird before it started? I.e. electronic layout, tail control linkage etc? Do you use an USB cable? If yes, what firmware version do you have on it? Are you using futaba or JR/Spektrum equipment? Does the gyro get initialized properly on startup? Does it happen always or just during specific maneuvers?

Tony

PS - I'm not paid to have a bunch of them and I still believe it kick ass the competition.

--------------------
"Perfection and patience usually walk side by side..."
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08-24-2008 05:22 AM  12 years ago
drdot

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So. California, Orange County.

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fwiw...

I've found most gyros, this one included, like to have about 5-8 degrees of right rudder set at the neutral position of the gyro in rate...gets rid of a lot of odd drift and "soft" issues with the tail...That said, other factors certainly play a part...Head speed, collective/bogging issues...list goes on...Have someone familiar with the gyro check it if possible...

John.
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08-24-2008 08:11 AM  12 years ago
classic

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PS - I'm not paid to have a bunch of them and I still believe it kick ass the competition
Thats because you suck as a pilot
Which is worse, ignorance or apathy? I don't know and I don't care!
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08-24-2008 11:51 AM  12 years ago
tchavei

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Portugal

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Thats because you suck as a pilot
I know others that can't do an auto without ramming into themselfs and yet they are getting paid

Tony

--------------------
"Perfection and patience usually walk side by side..."
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08-24-2008 01:45 PM  12 years ago
blbills

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Provo, UT

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I just set it up with the lights, no computer link. I am flying with Spektrum so it could be an issue with the initial startup and it not calibrating correctly. Is there a way to tell if it's calibrated right b4 take off?

I haven't changed anything on this heli since I put it together. It seems to drift through all manouvers. It's most noticable though when doing backwards flight and hovering and I have to hold left rudder to keep it centered.
Brian
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08-24-2008 03:18 PM  12 years ago
inkspot1967

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Cranston Ri

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best way to fix it is put a solid-g on it......
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08-24-2008 04:07 PM  12 years ago
tchavei

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Portugal

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blbills: My bet is that its the gyro not calibrating correctly because of the Spektrum way of initialising the system. I would send SpartanRC a support ticket. In the meanwhile, I've sent the link to this thread to him also so he can help you out.

In the meanwhile check this out: http://www.spartan-rc.com/support.php?faq=19

Regards
Tony

PS - Ink, What goes around comes around

--------------------
"Perfection and patience usually walk side by side..."
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08-24-2008 05:27 PM  12 years ago
Stu.

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Abrakebabra Kebab shop

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not the gyro

i had the same problem with the tail on my 500 too.

I reamed out the plastic on the grips so that the thrust bearings could move more easily while under load.

when not under load they should wiggle quite a distance relatively. They centre themselves corrently when they are running up to speed.

Should sort it. Definitely not the gyro with those symptoms. Welcome to rex 500 crap tail grip land.

Stuart
www.waterfoothelis.com
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08-24-2008 06:39 PM  12 years ago
Autoeject

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Ashtabula, OH, USA

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Yeah, check your tail rotor. If it's sticking in flight like a few others I've seen, you servo might have a hard time centering pitch. You could try spooling up with the main blades off and check the pushrod to see if there's any drag/sticking.

Of course, secure the heli well. If the tail were to stick one way or the other, it'll piro with dangerous results. Don't want that!
Mark Webber
wai-rc.com
Spartan RC Distributor
Outrage Helicopters
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08-24-2008 06:50 PM  12 years ago
3dhiro

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Scotland

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very constructive comment inkspot1967. Perhaps while he is at it he can also change the airframe, servos, speed controller and his radio.
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08-24-2008 07:02 PM  12 years ago
floop

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Southern, NJ

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vibrationIT's what I do.
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08-24-2008 10:46 PM  12 years ago
LaurenceGough

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UK

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I too would say vibration or incorrect mounting, that's a top notch gyro you got there.
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08-24-2008 10:51 PM  12 years ago
Stu.

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Abrakebabra Kebab shop

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Id doubt vibes on an electric.

The spartan is quite insensitive to vibes really...id check the tail grips, but defo take a wee bit of plastic out as i think the tolerances are off on the moulding, so when you tighten the grips up they tend to put tension on the thrust races.

Defintely that

Stuart
www.waterfoothelis.com
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