View Full Version : capacitor on speed 400

10-24-2005, 08:04 AM
hey guys, do i still have to solder those capacitors just like in the stock motor?

what for and what kind?

where can i get them?


10-24-2005, 08:15 AM
...I always put them on...I used little square turqouise-blue ones labelled 104 (i think, dont shoot me if thats wrong), I love the smell of solder after midnight ;)

...I usually put on THREE; one on the positive leg to the can and one on the negative leg to the can...I also put one more BETWEEN the legs ( :eek: )..I always 'felt' that there was a benefit but one of our techs could probably give you the correct 'data'...Hope this helps :o

10-24-2005, 10:03 AM
can i use speed 400 w/o a capacitor?

anyway, where did you get them?

10-24-2005, 11:32 AM
You need them otherwise you'll get interference on your radio... I just removed mine from the stock motor.

10-24-2005, 04:27 PM
I dont run them, haven't had issues with interference yet though

10-24-2005, 10:11 PM
I dont run them, haven't had issues with interference yet though

Same, i haven't had any issues without them.


10-24-2005, 10:36 PM
any tips on reducing rf interference from the mamba 25? my receiver is so big it is kinda hard to keep it far away.


10-25-2005, 12:03 AM
...you can get them at your LHS but true..you dont REALLY need them...i havent had trouble WITHOUT them...But i ALSO havent had trouble WITH them ;) I just like the smell of solder burning through the foam in my chair :D

...Matt mine are right beside each other with ZERO problems...I dont think you will have a problem...

10-25-2005, 02:43 AM
That's interesting... Are you all using AM radios?

It is less of a problem with FM and not a problem with Spektrum.

10-25-2005, 04:12 PM
40 mhz FM here... Mamba25 on the rear deck and RX on top of servo tray. never had any problems what so ever :)

10-25-2005, 04:50 PM
what receiver are you using? i have a MX3 but an old receiver from a magnum. it glitches when i come close to the car. if im not careful the car will take off. i had my mini t do that on my hand, i had a crispy black hand after that :( . i think i will put the receiver on the servo plate, it sounds like a good idea.


10-25-2005, 04:51 PM
oh its a 75mhz fm MX3


10-30-2005, 09:11 PM
are you sure that the receiver is compatible with the transmiter? I have a Futaba 3PJ with a 75 module on it and it works awesome so the 75 frequence shouldnt be the issue there ;)