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Radio - Spektrum DSM > Full size Electric Heli with AR6100 ??
 
 
norsman
Senior Heliman
Location: paradise PA

Damm for a village idiot your pretty smart
05-02-2008 01:51 AM
 
 
village_idiot
Senior Heliman
Location: Land of confusion

The AR6200 is supposed to work without the remote receiver, but the one that I have does not, that would make a nice compromise if you get a newer one or have the firmware upgraded so that it will work without the remote.
05-02-2008 04:52 AM
 
 
dkshema
rrProfessor
Location: Cedar Rapids, IA

From the instruction sheet that comes with the AR6100E:

Quote 
Note: The AR6100E receiver is designed for parkflyer aircraft only. This includes all types of compact electric airplanes as well as mini and micro helicopters. While the AR6100E receiver has more than adequate range for parkflyer aircraft, it is imperative that it not be used in larger aircraft that could exceed its operational range.

But, that "operational range" is not specified....

-----

* Making the World a Better Place -- One Helicopter at a time! *

Dave
05-02-2008 05:28 AM
 
 
Discharger
Heliman
Location: Perth, Western Australia

The 6200 would be a better choice with the satelite receiver however I suspect your problem is an inadequate power supply. With 4? digital servos the current draw would cause a voltage sag below the critical Rx requirement maybe only for a fraction of a second but this is enough to cause grief. I think a lot of bec's on board esc's are suspect. Perhaps look to a seperate high power bec or a 6v battery pack. Hope this is helpful.
05-02-2008 07:55 AM
 
 
norsman
Senior Heliman
Location: paradise PA

Well I just bought a ar7000 but I'm telling you I have not flown this heli far in my side yard it was never out of range I'm sure and my esc a Hacker Master 48-3p does not have a bec I have a koolflight 3 amp ,35 volt 5 amp peak BEC .Do you think that's not big enough???
05-02-2008 01:32 PM
 
 
Discharger
Heliman
Location: Perth, Western Australia

Stay cool norsman, most of us are just trying to be helpful. Consider those digital servos and ascertain the current draw on each when you move the sticks and x4. Could it be you are exceeding the 5A peak momentarily? If your bec is set for 5V then you only need a voltage sag of 1.5V for your rx to complain. Also check for solid connections from bec to battery and elsewhere. Poor solder joints or dicey switch contacts can cause v drops as well. Consider using a seperate 5 cell 6v pack.Not be as clean and convenient as the motive power source but may well solve your problem.
05-03-2008 03:19 PM
 
 
norsman
Senior Heliman
Location: paradise PA

It's all good,I'm waiting on the AR7000 and give it a wirl..And thanks for everybodys input,I'll figure it out.I have run about 10 packs through the heli and on the third pack my son was flying a nd when landing it started to lean right I'm screaming power and left and he said he had nothing know power know servos.Then on around pack 8 or 9 have way through the battery I was spooling up to take off again and it shut down and started leaning right I went left on the stick and nothing .So here we are ready to go at it again...Thanks
05-04-2008 02:55 AM
 
 
dkshema
rrProfessor
Location: Cedar Rapids, IA

Any idea what gauge wire comes out of that 3 amp BEC? And how long are the leads coming out of it?

Could be at high amp loads, you're seeing a lot of voltage drop across leads that are way too small....

Could also be that your 3 amp BEC is not capable of actually delivering 3 amps on a continuous basis, or even a couple.

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FWIW -- you might tell us what servos you're using in the heli. If you're flying standard size digital servos, even a healthy 3 amp regulator is marginal at best.

-----

* Making the World a Better Place -- One Helicopter at a time! *

Dave
05-04-2008 05:38 AM
 
 
village_idiot
Senior Heliman
Location: Land of confusion

It could also be static built up from the tail rotor belt if this is a belt drive tail
05-04-2008 06:27 AM
 
 
MMike
Veteran
Location: Holland,Mi-USA

Village is right on!

Ask me if I can fly nose in. :)
05-04-2008 11:41 AM
HOMEPAGE  
 
 
Discharger
Heliman
Location: Perth, Western Australia

No he's not! The Spektrum system operates beyond the static interference frequencies.
05-04-2008 11:57 AM
 
 
MMike
Veteran
Location: Holland,Mi-USA

Yes he is!

Ask me if I can fly nose in. :)
05-04-2008 02:26 PM
HOMEPAGE  
 
 
MMike
Veteran
Location: Holland,Mi-USA

Seriously:

The AR6100 is prone to static reset if you don't spray the belt.

I've had it on my EP100, BEFORE I knew any better.

Check out "all things that fly" podcast # 25 at 19 minutes.

JustPlaneChris tells the story.

Ask me if I can fly nose in. :)
05-04-2008 02:31 PM
HOMEPAGE  
 
 
village_idiot
Senior Heliman
Location: Land of confusion

There is a very long thread on RCGroups about the static issues with an Ar6100 and a belt drive 300 class heli. He could fly all he wanted to fly, but as soon as that bird touched the ground - ZAP! - he lost all control. Strap it to the bench and nothing ever happened since the charge is always drained.To say that an RF device is no susceptible to static discharge is just plain wrong. A spark gap transmitter throws out huge amounts of radiation on many different frequencies.

The recommended resolution was to lube the belt and pulleys, and possibly build some electron strippers to ride on the belt and pull the static off to the battery negative terminal.

If I think about it I'll find the thread and give a link.
05-04-2008 04:01 PM
 
 
Discharger
Heliman
Location: Perth, Western Australia

Maybe. I wonder if the static discharge is inducing a pulse to the power line of the rx that causes the reset rather than radiated energy into the rf stages? Has anyone tried a transient suppressor across the + & - at the rx?
05-04-2008 05:12 PM
 
 
village_idiot
Senior Heliman
Location: Land of confusion

Here is the thread, a little long but I think he did try a big capacitor across the power supply to eliminate that.
http://www.rcgroups.com/forums/showthread.php?t=743294

And no matter what the real cause is... Big static = bad things!
05-04-2008 06:11 PM
 
 
norsman
Senior Heliman
Location: paradise PA

These are full size digital servo's.How many amp bec do you rec???
05-04-2008 08:00 PM
 
 
norsman
Senior Heliman
Location: paradise PA

The wires are skinny but thay all are on bec's.They do run from front to back see pic

05-04-2008 08:13 PM
 
 
Discharger
Heliman
Location: Perth, Western Australia

Quote village idiot "He could fly all he wanted to fly, but as soon as that bird touched the ground - ZAP! - he lost all control. Strap it to the bench and nothing ever happened since the charge is always drained.To say that an RF device is no susceptible to static discharge is just plain wrong. A spark gap transmitter throws out huge amounts of radiation on many different frequencies."

Spektrums own blurb www.spektrumrc.com/DSM/Technology/spekTech.aspx suggests that 2,4G is above that.
As you mentioned the problem was the sudden discharge to ground upon landing and not while flying and this would support the theory that an induced pulse to the power and servo etc cables did the dirty deed.
A capacitor (of the correct value) could help but as I've mentioned a high speed transient suppressor (or both?) might well take care of the situation. It comes back to adequate power supply again. Not only being able to supply the juice without v sag but also a "clean" supply without high v spikes.
05-05-2008 01:42 AM
 
 
MMike
Veteran
Location: Holland,Mi-USA

Nors

Do you spray your belt?

Ask me if I can fly nose in. :)
05-05-2008 02:27 AM
HOMEPAGE  
 
 
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Radio - Spektrum DSM > Full size Electric Heli with AR6100 ??
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