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Old 02-07-2009, 07:12 PM   #1
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Default noise clamp: benefit or snake oil?

i happen to have a set lying around and stumbled upon a sale ad of much more racing and they sell these for rc cars.

is this just snake oil? or does it really work?

what is the best location for it on a brushless setup? i read around motor/esc and esc/battery lead both negative terminals.

any insight?
SpeedPassion 17.5R powered TRF417X
My son owns: Team Associated RC18R2
(RC18B2 converted to a RC18R)

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Old 02-08-2009, 10:07 AM   #2
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If you are talking about ferrite noise/beads clamps, yes they work to remove high frequency elctronic noise. The beads are really designed to stop the EMI and RFI caused by switching power circuits.
I bought dozen of many sizes for $6 and I placed one on all my chargers, power supplies. I have not placed any on my r/c cars as I use capacitors to capture the noise.

The reason why I places the beads on my power supplies is the fact in the good ole days of NIMH all my chargers were on a 32amp power supply. When one charger peaks or I turn on/off my tire true or test a new built motor it could create a large power spike or any other electronic noise. This powerspike could cause the other chargers to false peak which I have seen happen.

As for installing a ferrite bead on your power wires inside the car, it shouldn't hurt anything but could solve issues with radio interference and glitches. I use novaks trans-cap modual on all my speed controllers becuase it provides better protection from RFI and EMI that a stand alone capacitor won't.
"If everything seems under control, you're just not going fast enough." - Mario Andretti
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