Help - Interference!!!
 

Hi again everyone, me again!!!

I'm new to electric 1/10th scale RC Cars/Buggies. My XXX4 G+ is suffering from what I think is interference!

After I connect the batteries and switch on the ESC, the motor will just engage intermittently, it doesn't rev high, but it just lurches forward slightly. Then, when I'm running the car when it gets to approximately 35ft away it turns sharply left (always left) and goes flat out!!!

I'm using an Acoms AR-201 27MHz receiver with an Acoms Techniplus Radio. I realise, their nothing special.
I've re-routed the battery wires so that they don't cross over the receiver. The receiver is positioned next to the motor thou, just behind the servo (but where else is it supposed to go in a XXX4 G+?).

Also, after it has been running for just a few minutes (and not even after long straight runs at full throttle - I dare'nt. The buggy just veers off to the left as described above) the motor has a really strong electrical smell and is too hot to touch. Now I realise that a smell and some heat my be quiet normal, but the heat and the smell are quite severe (at least that's what I think, but I don't have any experience to compare it with). The motor is nothing special, but it is new, its a Peak Raven SV2 10 x 2 with a Novak GT7 ESC.

Any ideas???

Thanks

AdznKi

Chances are the cheap 27mhz am radio is to blame, I had to switch mine out when i started racing too as it would just steer left and right randomly and often veer off to one side flat out as you describe. :(

Thanks for your reply. That's what I thought, to be honest.
Have you any advice on the heat from the motor and the smell. Is this normal???

What equipment did you replace it with?

SOunds like the motor need attention to reduce the noise it gives out i.e. skim, brush, new capacitors.

Also mount the receiver taped to the side of the tranny tunnel so the aerial goes out the top and straight into the aerial tube.

thanks for your reply, would this still be applicable even if the motor is new???

Personally I just went for the top end since radio is something you're not gonna wear out or find it becoming outdated too quick, and got myself a second hand helios, also slightly advantaged by the fact i use steerwheels, they're far cheaper second due to a lack of demand, a helios with receiver is less second hand then just the receiver new!

I assumed the motor should be ok since it's new but it might be worth a look. :)

Sorry, my bad. I would be surprised i that were the case with a new motor.

Is the radio gear old?

Sanwa do a sub £100 40mgh system that has all the trims and EPA adjustments you'll need. 2nd hand they are usually 50 notes and seem pretty good. Crystals are expensive though!

New motors may not necessarily come with the capacitors pre-fitted. They are essential.

In case you didn't know, the routine is 3x 0.1uF caps, one from pos to neg, one from pos to the can (usually a little tab on the enbell screw), one from neg to the can.

Caps are widely available from RC shops or if you "think" you are getting a bargain you can probably buy a bag of 100 from an electronics shop.

Thanks for all of your replies !!!

I'm going to start with replacing the capacitors I've got. What rating of capacitor is it I need. I know they are 0.1uF but I've seen them on various website as either 250v or 500v for example.

Which ones do I need?

I'd just buy a set from a model shop!