lposter

What does a pretty high pitch scream coming from a motor mean?

Even when no throttle is being applied?

A fairly constant squeally noise that doesnt vary in pitch and is there all th etime essentially.

p

sevoblast

What kind of tank and electronics and what brand of motor? Does it do it with the speaker disconnected? Is power going to the motor even with the transmitter off but electronics on? Off the top of my head, sounds like an electronics problem, not a motor problem.

DirtyBird69

sounds like your throttle trim is a tad out of adjustment..

lposter

Its an old Mato motor connected to an old Mato 3:1 box in a scratch bulit tank.

The esc is an RX-18, get the noise even without the speaker.

It starts off OKbut once something like a pivotturn is done....it starts up and wont go away.

Ihave 3 A fuses on each motor lead to the RX-18 so its not drawing to much.

In general that motor/box seems to not reposnd as well as it should for some reason....Ithought it might be related to the noise somehow but I cannot see any pattern.

The noise would kill cockroaches though...... seriously horrible,.

If Iswitch off the transmitter and leave the tank on...noise still there. It aint the fan on the rx-18 either....

Bit freaked out actually...... havent heard anything like it before.

p

B.A.D.A.S.S.Force

Yeah, agree with DB.

You are probably referring to the feedback noise associated with the motors electrical interference through the electronics & FETs. It's a pretty high pitch whine, & you might hear it all the time because of how you have your radio controller setup on the throttle stick, even though you think you aren't giving any throttle. It only takes a very small amount of variation in the throttle to make the noise, even if it's not enough to move the motors.

You can try fine tune adjusting the trim associated with the throttle stick, in either direction, to see if you can get the whine to stop.

~ Craig ~

lposter

And the ten thousand dollar prize goes to DBand BAAF!

Tweaked teh throttle a little on th esteering of all things and the noise went away!

Hadnt thought of that and was sure it was the motor..... thanks for that!

While youre here......is it normal to see a few sparks inside a motor even if its been broken in before?

p

DirtyBird69

glad that solved your problem....sparks are normal between the armature and the brushes..as long as they arent flying out ofthe motor can lol..

ausf

The high-pitched scream we usually hear when running our tanks is coming from my wife.

MAUS45

Especially when there are metal tracks on a just dusted wooden floor! Sometimes it is my screams as she picks up the tank to move it off the just polished wooden floor! [X(]

ausf

Yeah, but it fishtails so nicely on clean floors. If I have a long enough run, I can swing the StuG around 180.

DeadTom

You guys are too funny, I really laughed out loud as I thought it was only my wife that did that.

MAUS45

And I thought cats only did that as they try to make a corner on just cleaned wooden floors. I guess I should run my Tiger I with the sound off next time and tell my wife it was the cat?

MAUS45

Tom you are not alone!!! There are many who suffer our same fate! You would think our wives would at least appreciate the fact we are not out hitting the pub to fill our free time?[X(]

MAUS45

Tom you are not alone!!! There are many who suffer our same fate! You would think our wives would at least appreciate the fact we are not out hitting the pub to fill our free time?[X(] Not sure why this double posted? Maybe I back spaced???