RC Car twitching steering??

[Matt106]

I've got an old Mardave V12 I built up a long time ago however it got pushed to the back of the cupboard after a steering issue.

All of a sudden the steering servo started to twitch which meant the car couldnt be driven properly.

I checked all the connections, made sure the crystals were correctly seated however it made no difference.

I'm wanting to bring it back to life so where should I start with fiixng the problem?

[thehos]

what motor you running? make sure the aerial wire isnt running alongside motor wires

[Bungleaio]

Have you got capacitors on your motor? Have you tried different servos etc?

[wacattack]

Try different crystals

[Matt106]

It's a standard mardave v12 in kit form with a hi-tec handset.

I'm not that clued up on them to be honest so don't know the ins an outs.

Even with everything fully charged I still have problems. Aerials both seem fine it's just odd that one day it stopped working?

Sorry to sounds stupid but what are capacitors? I've not changed the servos but that's the next step I think.

[wacattack]

I'm assuming it's a brushed motor, capacitors look like a small circle with 2 metal wires sticking out that are soldered to the +tve and -tve connectors on the motor. They help with interference. It's quite common to have a diode on the motor also

[Matt106]

Yes it's a brushed motor I actually replaced it as the old one died. Could it be poor soldering that's causing the interference?

[wacattack]

Matt106 said:

Yes it's a brushed motor I actually replaced it as the old one died. Could it be poor soldering that's causing the interference?

Could do. Have you got any of these on the motor (these are capacitors):

[Matt106]

Nope the wires are soldered directly onto the motor.

[wacattack]

Matt106 said:

Nope the wires are soldered directly onto the motor.

When I ran brushed motors I used to have 3 of these on the end bell. I soldered them on the connectors on the opposite side to which the wires are soldered on i.e. 180 degrees round the round end bell when looking at it top down. Id have one going from the positive to the connector between positive and negative. One going from negative to the connector between positive and negative, and one going from positive to negative.

[Matt106]

wacattack said:

When I ran brushed motors I used to have 3 of these on the end bell. I soldered them on the connectors on the opposite side to which the wires are soldered on i.e. 180 degrees round the round end bell when looking at it top down. Id have one going from the positive to the connector between positive and negative. One going from negative to the connector between positive and negative, and one going from positive to negative.

Thanks I'll give that a go as it seems like a cheap option! If that fails I'd imagine it'll be back in the cupboard for another year...