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MS Composit › glitch reduction(noise suppression)
10-19-2004 07:49 PM  13 years agoPost 1
yf22k

rrVeteran

Long Island, NY

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Hey guys,

I just picked up a radioshack multimeter with built in electric field detector. I put my axi motor into a vice and measured the EF it emitts. I got 5 out of 5 bars near it.

To reduce EF noise, I grounded the motor and shielded the esc with foil and grounded that. Now when i run the motor, there is no EF detected. When i remove the wire it shoots right back up to 5 bars. I have not experienced a glitch when flying since grounding the motor and esc.

It is easier to ground everything if you have the duzi one way mount because you can just ground stuff to the screws or the plate and everything else that touches it will also be grounded (ie. motor)

I'm sure this works for othe rmotors too!

Hope this hepls some of you who are experiencing glitching.

-Keith

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10-20-2004 03:13 PM  13 years agoPost 2
mattijs

rrApprentice

Keerbergen Belgium

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i am going to ground it right away...i feel silly for not having thought of that myself

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10-20-2004 04:33 PM  13 years agoPost 3
yf22k

rrVeteran

Long Island, NY

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lol yeah all this this time i never thought about it and was thinking of how i could reduce the noise.
Then the idea hit me!

-Keith

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10-21-2004 10:37 AM  13 years agoPost 4
Fit

rrApprentice

Temasek

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yf22k: how can i ground my Himaxx 2015? What should I do?
I've been trying hard to get rid of the glitches/cutouts on my P10 equipped hornet. If this works I would be a happy camper and not fear of crashing when flying at lower heights.

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10-21-2004 04:18 PM  13 years agoPost 5
Blade-X

rrApprentice

Singapore

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yf22k ,
pics please!!!!! I'm electronics-illiterate..... I've an AXI too.. looks like this will solve my H2's Archilles heel.

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10-21-2004 06:02 PM  13 years agoPost 6
yf22k

rrVeteran

Long Island, NY

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do you have the duzi one way mount? it'd be easier. I'll try to take pictures later. Basicaly i just attached a wire from any piece of metal that contacts the motor and attached the other end to the negative battery lead on my esc.

-Keith

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10-22-2004 03:12 AM  13 years agoPost 7
Fit

rrApprentice

Temasek

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Nope I don't have the duzi mount. But since the tray is CF and CF conducts I think its will work just as well as the duzi mount? What do you think?

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10-22-2004 03:38 AM  13 years agoPost 8
yf22k

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Long Island, NY

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carbon fiber doesn't conduct as well as aluminum. I would attach a ground lead to the motor screw just to be safe.

-Keith

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10-22-2004 02:42 PM  13 years agoPost 9
Fit

rrApprentice

Temasek

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Just got back from flying with a grounded Himark 2015 and phoenix 10.
I'm grinning from ear to ear! It works! For the first time I have a completely glitch free flight

Yf22K thanks for the great idea, its a godsend man! Finally we have a P10 setup that doesn't cutout anymore woohoo!

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10-22-2004 04:49 PM  13 years agoPost 10
yf22k

rrVeteran

Long Island, NY

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lol it works like magic. I just remember being amazed when i tried my ef field detector next to the motor and just touching the ground lead to the motor mount. The detector would go from peak to nothing instantly.

Glad it worked out.

-Keith

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10-23-2004 12:03 PM  13 years agoPost 11
acr1346

rrNovice

St. Petersburg, FL

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I get that one wire is tied to the metal motor mount, but to what is the other end of the wire attached, the negative lead of the battery, the
AF around the speed controler, 8ft copper rod in earth?

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10-23-2004 01:58 PM  13 years agoPost 12
yf22k

rrVeteran

Long Island, NY

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? Just attach it to the negative lead on the battery side of the esc and it'll be grounded.

-Keith

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10-24-2004 06:21 PM  13 years agoPost 13
Bg_

rrApprentice

Penn. State U.

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pics!

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10-24-2004 07:45 PM  13 years agoPost 14
yf22k

rrVeteran

Long Island, NY

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I'm having problems with my camera right now so i'll try to get a pic taken during the week.

You don't really need a picture i would think. Its a very simple fix. Just solder a wire from the negative lead of your esc on the battery side and twist the other end around the motor mount screw.

-Keith

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10-25-2004 05:55 PM  13 years agoPost 15
Razmo

rrKey Veteran

Chicago

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Kieth,

I'll be giving it a go aswell. Thanks.

Raz

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10-26-2004 08:20 AM  13 years agoPost 16
Fit

rrApprentice

Temasek

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Picture

Hi guys,

Its very simple, here's a picture of how things should be connected:


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10-26-2004 08:30 AM  13 years agoPost 17
yf22k

rrVeteran

Long Island, NY

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There you go. That's pretty much all you need to do. Thanks for the pic Fit. you saved me a bit of time but i really need to get a real digital camera. no more of this fidgety webcam stuff.

-Keith

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10-26-2004 01:35 PM  13 years agoPost 18
Bg_

rrApprentice

Penn. State U.

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So why/how does grounding the motor work?

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10-26-2004 04:01 PM  13 years agoPost 19
Razmo

rrKey Veteran

Chicago

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Bg,

You're not grounding the motor, your grounding the ESC to the motor. The same wire you see attached to the neg terminal of the battery plug runs to any bolt holding the motor to the frame. You could, instead of soldering the ground to the neg plug terminal you could solder the ground wire directly to the negative terminal on the ESC.

Raz

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10-26-2004 04:05 PM  13 years agoPost 20
Bg_

rrApprentice

Penn. State U.

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Ah sorry, wrong choice of words then. I just wanted to know why grounding the ESC to the motor reduces EMF.

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