Hotrod G2 built from scratch

[ElectricKaos]

Duffe,

What you are asking about is what is called a ferrite ring. Its used to help decrease EMI but people mostly use it to take the slack out of long servo wires. Its more useful in a non-DSM setup.

[WC_WICKEDCLOWN]

thats what the raptor should have really been made of.

[RTFHELI]

Nice looking build  Keep it coming.  Question -- Does the Ferrite Ring actually work well or is it just more weight to the heli ?  I would have thought using a 2.4Gz DSM system and a brushless motor, there would be minimal RF noise.

[dditch66]

Those ferrite cores keep high frequency power supply noise from transfering from one end to the other.
Usually you put them on the end that is generating the noise. I keep seeing UBEC and ESC's w/ UBEC's in them w/ those filters.
They put them at the Rx side.   That's what you'd do if the Rx were causing the noise. Contradicts what I learned about those filters through my years as an Electrical Engineer.

[RTFHELI]

I'm no EE major, but instead of using an old style Fe ring (which is akin to a clunker), wouldn't it be a lot easier to use a metal oxide capacitor with a .01 micro farad rating.  I use these capacitors as they are small an pretty efficient in reducing RF Noise on a Walkera #4 or Walkera #22E.  The Rx doesn't generate the RF Noise, it's the carbon brushed motors.  You can run an oscilloscope an view the amount of RF Noise that's gets generated when spooling up.

[mckrackin]

I use the ring because it's pre-installed on almost every ESC I buy.I seriously doubt there's any need in the 2.4 systems with brushless power.

[dditch66]

capacitors don't work with very high frequencies.
the ferrite cores work with higher frequencies.
The UBEC switcher power supplies generate very high frequency harmonics. Ferrite cores work better on them.

I would not classify a ferrite core as a clunker. Look at many computers keyboards and other things like power supplies and they will put Ferrite cores near the end. OOPS, I think I just answered my own question. The charger for my laptop has a ferrite core near the end that plugs into the computer. 

[helikido]

how long did it take you to build the heli?

[mckrackin]

how long did it take you to build the heli?

I think I put about 4 or 5 hours in it.

[helikido]

dain dude. thats very fast and good.

[mckrackin]

dain dude. thats very fast and good.

It was fast and easy because it was never intended to fly.
Hanger Queen from the start

[helikido]

hmm im thinking about building my own model from different parts of different helis.

[mckrackin]

hmm im thinking about building my own model from different parts of different helis.

I've done alot of that and really enjoyed it.
Now that I fly pretty well,the flying is sucking the fun from the hobby.Always trying to get something perfect.
It's really not as fun as it was when I was struggling with every battery.

[helikido]

maybe you should start to practice extreme 3d.

[DUFFE]

VERRY VERRY NICE INDEAD ill call it a [MAKABILD]