Interference

[Cheetham]

Anyone know where I can get the right capacitors for stopping interference. Took the car out last night and for the first time I've noticed, it took off on its own. It only got about 75/100 meters away. I'm running a TT-01, 17x2 turn motor, M-troniks ESC and a few other hopups. Fitted a schottky diode as recommended and grouped the cables as best I could. Reading through, I’ve heard bout schottky diode modules. Do these do the same as soldering the diode to the motor and where can you get them (had enough trouble getting just the schottky's).

Thanks in advance. Be nice for the car to last a bit before meeting a kerb!!

Cheers

Tom

[Live Steam Mad]

If you are on AM then maybe change to using FM instead of AM? I used to have the same problems when running my cars up and down my street on AM but that was years ago. Funny though, I never had any problems on AM when racing at my club 15 years ago.

I never did find out where the interference was coming from whilst running up and down my street years ago with my cars, but there *was* a CB 'Silver Rod' aerial on a house at the other end of the street where the interefence seemed to always happen (but then it also happpened at the other end of the street where there where apparently no aerials) and I was always on 27MHz AM back then.

Since coming back into the hobby 6 or 7 months ago I have only run my cars & trucks indoors but I noticed interference near my cooker & fridge when on AM (glitching, twitching steering, throttle 'jumping') so I changed to FM.

No problems since changing to FM. On Tamiya 1/14th trucks I use a Futaba FF6X FM set, and on my cars I use a Hitec Ranger III FM radio set. Interference gone! (although I heven't driven one of my models up and down the street yet since I used to all those years ago).

Cheers,

Alistair G.

[sosidge]

75-100m is really at the top end of range in a built up area - there are so many sources of radio interference and reflections out there.

Schottky diodes and capacitors should be easy to find in a model shop that is worth its salt (if you're struggling, we stock them). One schottky is pretty much the same as another, although we have a "Super" schottky which is about 3 times as strong as a normal one. Capacitors are 0.1uF, and three should be fitted to the motor, one from + to -, one from + to the can, and one from - to the can. Beyond that there are more tricks you can do to try and reduce interference (e.g. receiver capacitor, ferrite clamps), but I think your range is fine to be fair.