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10-12-2005 01:55 PM  13 years agoPost 21
Xterra

rrApprentice

USA

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Guys,
Please let me know when you get the rings.



Stratus
Raptor 50V2
T-rex SE
T-rex CDE
T-rex 250 SC
Kyosho M24

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10-12-2005 05:00 PM  13 years agoPost 22
Jcopter

rrApprentice

Los Angeles, CA

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Just wanted to talk about the wire on the ESC , some of the guys here have taken the gyro signal plug that plugs in to your reciever and a small black plug from another spare plug, carefully pried the connecter pin from it and inserted it in to the Black (or Ground) slot, plugged the gyro back into the reciever and then simply attached the other end of the black wire to a bolt on the motor mount somewhere and volla reciever grounded no more glitching.

jack

Keep "Em" Flying

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10-12-2005 10:15 PM  13 years agoPost 23
OICU812

rrMaster

Edson, Alberta, Canada

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Grounding the black wire off esc to a motor screw / bolt is not a good idea. Only grounding I have ever heard of helping was the boom to the frame. Friction from belt causing vibes and intereference. In all honesty if your wiring is neat and esc is far from rx, motor wires are twisted, & using a ferrrite ring you should have no issues. Some will say foil wrap and allot of other hocus pocus crap ideas, if you look at those people models they have wiring all over the place,,,, gee I wonder..........It doesen't take that long to do it perfect and have it all work, I have never understood some peoples struggles.

...Once upon a time there were Nitros, flybars and frequency pins...

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10-12-2005 10:21 PM  13 years agoPost 24
Twobeers

rrKey Veteran

Toronto, Canada

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What is this ferrite bead thing. Is it something magical? Or some sort of ancient vodoo magic?
http://www.bytemark.com/products/ferbead.htm

I lost my infamous tag line.

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10-12-2005 11:39 PM  13 years agoPost 25
Ozydego

rrKey Veteran

Westerville, Ohio

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Beers, Do a search on here for ferrite ring, magic ring, or ferrite choke, and you will get more info than you could want about them. Basically it helps cut down on glitches... they called them beads, they are commonly called rings...

But Honey, I can't live with just stock.....

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10-12-2005 11:40 PM  13 years agoPost 26
JiggerInc

rrApprentice

Arlington, VA

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A ferrite ring is just a little lump of iron. Long runs of wire act like antennas.. picking up RFI emanating from noisy things like rapidly switching ESCs and motors and carrying it into the receiver or ESC or gyro. The lump of iron "chokes" the RFI traveling down the wire and prevents it from propogating. If you put your heli's receiver antenna through a ferrite ring or bead your range would suck. No magic.. you can find them on computer cables as well.

- Greg

There are two varieties.. "rings" are little donuts.. you wrap the wire around them over and over again, each pass multiplying the effect of the choke. "beads" are a two piece design, usually quite a bit longer, that just clamps over the wire.

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10-12-2005 11:50 PM  13 years agoPost 27
upperking

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Spring Hill, Florida

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Why call it a ferrite ring? Why not a gerbil hole?

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10-12-2005 11:55 PM  13 years agoPost 28
JiggerInc

rrApprentice

Arlington, VA

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Well, you certainly *could* call it a gerbil hole. It doesn't have gerbils in it.. and its not really a hole.. but you don't park on a parkway or drive on a driveway, so what the hell.

In defense of the current trend, however, it is made of "ferrite" .. and is generally in the shape of a "ring" .. so they might be on to something there.

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10-13-2005 12:01 AM  13 years agoPost 29
euknowho

rrApprentice

Flint, Michigan

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I don't think that gerbils have any magnetic induction,,, therfore it probably wouldn't help,,, but for those who really want to try,,, DEFINATELY don't let me dissuade YOU!!! I have to agree with OZYDEGO though,, he recomended the radio shack one, I used it, and now i fly HAPPILY,, WITHOUT any noticible glitches,,, thankx again dude!!!

Hey twobeers, haven't ween ya on G2 lateley,, course, I haven't been ther often either,,, TREX's TOTALLY ROCK!!!

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10-13-2005 03:36 AM  13 years agoPost 30
Professor Fate

rrKey Veteran

Goose Creek S.C.

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The truth comes out
Try dangling the ring just outside of your.....See if the gerbil will jump through it.

Welcome my son, Welcome to the machine

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10-17-2005 07:04 PM  13 years agoPost 31
johnny b

rrApprentice

Central Coast, CA

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A question on weight:

How much does the plastic box from Radio Shack weigh, and how big is it?

And how about those ferrite rings?

Are they only a coupla' grams, or is it more than that?

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10-17-2005 08:37 PM  13 years agoPost 32
Ozydego

rrKey Veteran

Westerville, Ohio

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It is more than the ring, probably like 4 put together... I took the box off, and used just the ferrite core. I would say with the box it probably weighs in at 10-15 grams.... Its size is ~2 1/2" by ~4/5" diameter....

But Honey, I can't live with just stock.....

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10-17-2005 09:23 PM  13 years agoPost 33
Crush

rrApprentice

York, PA

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XTerra,

I received my ferrite ring today and installed it. All I can say is THANK YOU. I am glitch free!!

I appreciate your kindness. And thanks to all for the info. I don't know what I'd do without this forum.

"Learning from mistakes gets expensive"

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10-17-2005 09:33 PM  13 years agoPost 34
Kermitdafrog

rrApprentice

Charleston, SC

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King,

I think the word "ferrite" comes from "ferrous" meaning magnetic, and the rings are made from a compressed/molded ferrous material which resists or bucks the sudden change in magnetic field caused by a current spike in the wire passing through it. (i.e. "choke")

Iron and steel are ferrous ... and I'm pretty sure hamsters, geribils and aluminum aren't .

Rick

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10-17-2005 09:44 PM  13 years agoPost 35
Xterra

rrApprentice

USA

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Crush
Great ! ! ! Glad to be of some help -paying forward what some people did for me when I just got started.

Now go out and have fun.


Stratus
Raptor 50V2
T-rex SE
T-rex CDE
T-rex 250 SC
Kyosho M24

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10-17-2005 10:13 PM  13 years agoPost 36
Professor Fate

rrKey Veteran

Goose Creek S.C.

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Be sure to pronounce it correctly or you could end up with a Ferret, you don't want PETA on your Fanny.

Welcome my son, Welcome to the machine

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10-17-2005 10:55 PM  13 years agoPost 37
zoom

rrElite Veteran

Galveston, Texas

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Ferrite
Its sounds like it has iron in it. Fe3 , Fe2, Ferrous and Ferric from chemistry. I always forget which is which, but I do know and agree, it is not a rubber ring.

If I remeber correctly, wrapping wire around any type of cylinder and running current threw it creates magnetic forces. Maybe, that's why the ferrite rings work, but I do know that it surely works.

Please correct me if i'm wrong.

Predator, Raptor 30, TRex CCPM 450TH, 3D Pro 400F

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10-17-2005 11:20 PM  13 years agoPost 38
Kermitdafrog

rrApprentice

Charleston, SC

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Zoom,

Same principle ... the surge or spike passing through the wire expends most of it's energy trying to magnetize the core or ring, and less of the undesired energy change/surge/spike passes through the wire to the destination.

Rick

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10-20-2005 07:35 PM  13 years agoPost 39
jiri

rrApprentice

Aalborg, Denmark

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I was trying to buy some of these rings and they had many different
types, mostly around 10 - 100 MHz. I bought the one with the highest
range, something like 20 - 80 MHz but was wondering which frequency
would be the best for our applications??? Any ideas?

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10-20-2005 09:10 PM  13 years agoPost 40
justme

rrApprentice

israel

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ferrite is the name for alpha-iron, which is one of the iron phases (ferrum is the latin name for the element Fe- iron)
Those ferrite rings though, looks like some kind of an iron ceramic compound (they are very brittle to support that, i guess...).
No need to buy any, take one from a PC power supply or something like that, if its good for your PC i guess its good for your heli...

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