PLEASE HELP!!!

[T3rox]

hey guys,
I'm starting to think about leaving this sport. No matter how much money i spend, it still don't wrok rigth!

maybe you can help me out, otherwise, the T3 and the Stampeed are hittin the shelves indeinently...

MY PROBLEM:

I just purchased a Futaba MC330CR (the pink box) speed control, i'm using it with my P2K motor, my 2000mah battery, and gearing of 18t pinion to 87t spur. All this after my ENTIRE electronics package was singed, melted and burned for no aperant reason during a normal opperation in a parking lot,

anyway, my charger (Vision PEAK) charges the battery, which runs great in the stampeed, (which actually beets the T3 thanks to the following problem), but when i put it in the T3, it runs as iff the battery is half dead from the begining, SLOW! NO reverse! and from time to time, the conformation beeps stop and it acts as if the motor is not even attached, but after a swift kick, it seems to realize where it is and who is holding the controler and begins running again, still painfully slow and uninspired, i was humiliated when this problem first arose as i was racing my Friends STOCK stampeed through my track, and it pulled further away in every corner! by the end of 10 laps, it had laped me. FOR THE LOVE OF GOD! WHY!?!

any of you veterans care to speculatebefore this RC racer goes out of buiseness?

[very low budget racer]

The reason this happnend was the brushes in the motor are bad, they dont make a good connection and sometimes they wont move the car, and this causes ALOT of heat, try getting a new motor too cuz if your brushes are bad then maybe your comm needs a cut also.

[Nairb]

Are you using the same electronics in both trucks? (Are you transferring everything into whatever truck you want to drive?) That's what it sounded like, but it's probably not the case, right? If the T3 has its own stuff, I think these things could be causing the problem:

- Motor. The brushes could be worn out or broken. If they're too short and the springs can't push them against the commutator hard enough, these things will happen. It doesn't sound like you smoked your motor, but check to see if there is anything inside the motor anyway. I recommend you get the comm cut and replace the brushes. That could solve all your problems.

- ESC. I don't know why or how, but your ESC could be fried. The 330 model should handle a hot mod, so your motor isn't drawing too many amps from the ESC. It could be defective. Check this last.

- Receiver. This could be damaged as well. Try testing it with different servos plugged into its slots. The ESC wire to the receiver could even have a short in it. That would be bad. Futaba should replace it for ya if it is.

- Battery/ESC/Motor connections. Check these and make sure they are solid, not plastic melted together, and consider getting high-quality plugs if you haven't already.

The most likely thing is the motor. Check it first. The most simple fix could be resetting your ESC. Try it, you may be surprised. If you bumped the throttle ATV or EPA, you won't get full power. Whatever it's set at, just reprogram the ESC and it'll work with it just fine. Good luck and tell me what happens.

[Nairb]

Just as I thought... I take a while writing my short novel and somebody beats me to the punch. I agree that the most likely problem is the motor. Just get the comm cut and get new brushes; don't worry about buying a whole new motor just yet.

[T3rox]

ummm...thanks for the help guys http://www.rccaraction.com/ubb/smile.gif and thats all wel and good and stuff, and if its accurate then i in all honesty thank you TONNES! but the thing is, i just got this motor 2 days ago, brand new and out of the box, with that in mind, could the COMM//BRUSHES still be it?

[very low budget racer]

Yeah, did you break in the brushes? get the battey box that came with your radio and wire that directly to your motor with 4 AA batts, then dip the motor in water for a few sec so the brushes wear down to match the comm's shape, then when you take it out, spary the motor with WD-40 to prevent rust then let it sit. Then re-try the motor in the ESC it should work fine. It could also be that you used the motor alot and wore the brushes, if the brushes over heat they turn like a dark color and then are bad.

[chance]

Check to see if there is a brush sticking. Sometimes dirt causes a brush to hang up in the motor brush hood.
Had that to happen to me on my Rally Weapon.

[ovalnator]

Try cleaning the motor out; maybe there is some debris inside.

[MJ]

This is a long shot, but if you connect the motor leads backwards on a reversible ESC and then reverse your radio, the motor will run with only partial power going forward. It will however run like a bat… in reverse.

[Railman]

You guys covered just about everything I could think of except checking to see if something is binding up. Check out gear mesh, free transmision, & free axles. Just a little binding can cause big amp draws. Good luck.

[Railman]

You are undergeared a bit. With a P2k you can easily pull a 20 tooth pinion on a T3 ( 20 x 87). This will probably get rid of that symptom you're talking about on top end. See how hot Your motor gets now, change the pinion to a 20 & make sure that it doesn't get too hot (uncomfortable to touch after 5 min). Good luck, & have fun.

[matmatcadillac]

the stuttering you have could also be interference, try seperating your sets of wires. Keep the battery wires and motor wires as for from the reciever as possible. Dont go extreme. Nice job on everybody elses diagnosis

[T3rox]

Thanks alot guys! and i did check, there was someting holding the Bushings in place, and they were barely touching the Commuter, now, it goes Really Frikken fast (still no reverse...o well...) but it seems unstable...

Like when the motor reaches its max RPM, it starts to cut out... like missfiring in a car or 4-wheelr...that doesn't appear to effect anything else tho...any suggestions would be nice, but they aren't nescesary any more...thanks for your help!!!

[T3rox]

i agree you guys have all been a great help! and that did work, gearing 20/87. there is no more cutting out... thanks agaiN!!!