RC toy car motor speed reduction

[skmdmasud]

Hi..
i bought a wltoys 959B rc which can go up 70Km/h speed, which is good. It has a brushed 540 motor and 7.4v lipo battery. With this setup the RC is too difficullt to control specially for my kid.
I want to reduce the motor speed to half so that it becomes more stable and easy to play with. Can any one suggest how this can be done easily.

Regards.

 

[Mickster]

The toy car is only going to reach a particular speed based upon how far the trigger is pulled.
So, you can limit the trigger range of movement mechanically, by fitting a stop.
Or you can trick the transmitter into seeing a value which is less than the full range, but that involves opening it and seeing if a resistor can be added to the throttle potentiometer.

This is assuming that there are no limit trim-pots on the transmitter itself?

 

[skmdmasud]

The toy car is only going to reach a particular speed based upon how far the trigger is pulled.
So, you can limit the trigger range of movement mechanically, by fitting a stop.
Or you can trick the transmitter into seeing a value which is less than the full range, but that involves opening it and seeing if a resistor can be added to the throttle potentiometer.

This is assuming that there are no limit trim-pots on the transmitter itself?

if i add a resistor in series with the motor it should slow it down, or will it burn the control circuit?

 

[Pommie]

Is the speed controller electronic. Some early R/C cars had mechanical speed controllers driven by a servo.

A resistor will probably work but will have to be very high wattage.

Mike.

 

[skmdmasud]

Is the speed controller electronic. Some early R/C cars had mechanical speed controllers driven by a servo.

A resistor will probably work but will have to be very high wattage.

Mike.

Speed controller is electrical with 4 fets/trans visible and becomes very hot.