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Zoom › Glitch - Altitude Drop
02-08-2006 03:30 AM  12 years agoPost 1
lazerin

rrApprentice

Adelaide, Australia

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Hi guys, I think I've been having problems with glitching. When flying my heli, it will drop a foot or so of altitude very suddenly. I can't really tell whether it's the motor losing power/cutting out, or whether the pitch servo is glitching and reducing pitch suddenly.

I was hoping you guys could give me some easy (and cheap) suggestions and ideas that I could do to solve the problem, short of changing/moving components around.

I've heard that braiding the cables from the ESC to the motor may help? I will give this a try later. Is this an effective method?

Below are a few pics of my setup and here are my components:
400dh
Align 25A esc
4 x JR NES371's
GY240
JR R610M receiver
JR 2610 radio

EDIT: I've also got this ferrite clamshell hanging around and I've heard about people putting these on the cables coming out of the motor. My only concern is the weight of the thing. How effective is this?

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02-08-2006 05:01 AM  12 years agoPost 2
flyhigh

rrApprentice

USA

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I had a glitch too. I invested on a new berg, ferrite ring, and an SBEC. All new parts and still have the glitch. I've read a forum about static on the belt. I grounded the carbon fiber tail and carbon frame to the negative of my lipo battery. My glitch went away.

I spent over $130 in trying to solve it and all I needed was a small piece of wire.

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02-08-2006 07:44 AM  12 years agoPost 3
Rob_T

rrElite Veteran

..

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If it is static, try static guard spray on the belt.

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02-08-2006 07:50 AM  12 years agoPost 4
lazerin

rrApprentice

Adelaide, Australia

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Hmm, my heli's not belt driven.

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02-08-2006 08:17 AM  12 years agoPost 5
Rob_T

rrElite Veteran

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Ok, so no static guard

Give the ferrite a try. They work for some people. Also there is another glitch stopper for the ESC wire from DeeTee that some people seem to have had success with.

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02-08-2006 08:20 AM  12 years agoPost 6
Rob_T

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Also try straightening the antenna wire out. Run it to the tail fin and back to the skid on the other side to make a long vee shape.

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02-08-2006 09:08 AM  12 years agoPost 7
flyhigh

rrApprentice

USA

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or just get a DX6 transmitter. Comes with a radio, receiver, and 3 servos. Glitch free and worry free.

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02-08-2006 05:21 PM  12 years agoPost 8
smokin

rrApprentice

Bellevue, NE - USA

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I agree with flyhigh, I have a DX6 on order with my LHS.

Meanwhile, rerouting my antenna wires to my Electron 6 RX seems to have helped some. I think I was running the wire to my Deans on Shogun #1 a little too close to the ESC. Shogun #2 is running a standard wire antenna mounted through plastic tubing out on the plastic landing struts and I don't seem to have nearly as many glitches with it as I do with the Deans antenna. Having said that, #1 is practically all metal, #2 is almost all plastic. It could also be the rabbit's foot I stuffed into the canopy!

Anyway, reroute your wires as far away from noise sources as possible. If that doesn't work then maybe you gotta spend a few bucks on antijamming technologies like ferrite rings etc.

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02-08-2006 05:54 PM  12 years agoPost 9
Rob_T

rrElite Veteran

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I'll second the recommendation for the Spektrum DX6. I put one into my Trex to fix a similar issue, and so far it seems to have worked, but I dont have enough time on it yet to be absolutely sure.

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02-09-2006 12:00 AM  12 years agoPost 10
lazerin

rrApprentice

Adelaide, Australia

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I'd like to try the cheaper options first.

Is this a suitabale ferrite ring?
http://www.jaycar.com.au/productVie...=&SUBCATID=

They seem to be available in:
100UH, 100UH 3A, 47UH, 220UH, 470UH. Which one should I get?

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02-09-2006 12:32 AM  12 years agoPost 11
Rob_T

rrElite Veteran

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That's not ideal. You want just the ferrite ring without the wire wrapped around it too. Then you wrap the wire from the ESC around the ring several times.

You could remove the wire from it (it's probably not glued), but its probably cheaper to just buy the core on its own.

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02-09-2006 04:43 AM  12 years agoPost 12
flyhigh

rrApprentice

USA

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Ferrite ring for a logo 10 (its small and it's orange) $14.99. The regular ferrite ring you get from the portable electronic is heavy and might not work. I wasted $14.99 and still had the glitch, wrapped it 7 times around the ring on the esc lead (using an extension wire). If not the DX6 get a PCM receiver if you're radio is capable.

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02-10-2006 12:29 PM  12 years agoPost 13
lazerin

rrApprentice

Adelaide, Australia

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I bought a pack of ferrite rings for AU$ 2.50, placed on between the esc and rx and voila~ it's no longer glitching

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02-10-2006 12:51 PM  12 years agoPost 14
leslie

rrKey Veteran

Hollis, NH - USA

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Hi All,

do a search for ferrite core, or ferrite ring. You'll find a part number from digikey for a .49(USD) that fits the bill.

Cheers,
Leslie

Protecting those who protect us

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02-11-2006 03:53 AM  12 years agoPost 15
rcnut2

rrNovice

Canada

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Make sure you're shaft drive isn't ripping up inside the tail boom on the bearings that may be seizing. That happened to mine. Bearings were grinding and grabbing causing loss of head speed that translates to momentary loss of altitude.

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