Tower Pro Mg-995 Digital Servo On A Lunch Box

[hornetchild]

Hi,

I'm trying to use a Tower Pro MG-995 digital Servo as a steering servo in a Lunch Box RC model car equipped with a Sanwa 27MHz transmitter and receiver and a Tamiya standard ESC: while moving steering Tower Pro MG-995 Servo it also moves the second channel and the cars accelerate shortly even if the speed control is not touched at all. In neutral position it makes some noise and sometime small vibrations. Do you have some idea why is that happening and if there could be some explanation and/or solution? Thank you very much!

I wanted to install it because I thought it would have a better torque than the standard Sanwa plastic gear servo for the big and heavy wheels of a Lunch Box.

Many many thanks, many many greetings!

[mymonsterbeetleisbroken]

Hi there!

To be honest you don't really need a high torque servo for a lunchbox, as the front of the chassis is very light and the tyres are quite light for their size.

I've always used standard servos for steering the wheels on that chassis.

The problem could be glitches as the high torque servo could be exceeding the current output of the esc or the receiver.

[markbt73]

It sounds like you might be getting interference, maybe from the metal servo gears being transmitted to the antenna in the car. The best way to avoid this is to make sure the receiver antenna wire isn't anywhere near any other wires on the chassis. Don't bunch up excess antenna wire inside the car; let it dangle out the top of the tube. And don't wrap up the antenna with other wires, or you're more likely to get interference.

If you isolate the antenna wire and you're still getting glitches, try a plastic-gear servo. The standard Futaba 3003 or Tower TS-53 is plenty of power to steer that truck. And you'll save some money.

[hairyguy4]

the glitching servo is caused by the esc not allowing enough power to it, i say just go with a stock one, or look for a hpi sf2 servo, it's a high torque and glitch free, hope this helps

[secretsg]

Digital servos tend to make that whine when idle. They are cetnering themselves. As long as its not loud whine (aka stress) I wouldn't worry about it.