Hello, can anyone recommend an engine the size of this engine and miles long, more powerful than this one? I want to make an engine change to increase the speed of our rc car, is what I'm doing appropriate, is it harmful to the circuit, I'd appreciate it if you'd answer.

 

When I was into slot car racing, we used to de-wind or rewind our motors to get some more speed, but it does require more energy and can take a toll on both the car and the track as well as the power supply.

I can only assume the same types of things could apply to RC.

I would try the hobby shops and RC forums for more information.

 

this engine and miles long, more powerful

More powerful means using more power. Which also means draining batteries faster. Power is "Watts". If you have a motor that runs on 5 volts and draws 100mA then you'll get 0.5 Watts of power. If you change the motor to one that draws more amperage, say 200mA then you'll be using 1 watt of power. If this is battery powered then you're draining your battery twice as fast. And the speed of the RC Car WILL be higher but it will run out of energy faster.

 

There are many varieties of the motor you show but we can not suggest a faster version because we know nothing about this one.
There are a couple of ways you can increase the speed of the RC car, using the same motor. You could change the gear ratio between the motor and drive. You could use slightly larger wheels. Both of these modifications will increase maximum available speed at the cost of reduced acceleration.

 

Your "RC-Car" is a Toy,
It's not on the same level as the DIY-Hobbyist Cars.
It's very likely that the rest of the Car,
( especially the Transmission-Gears ),
can not withstand very much more Power or Speed.
.
.
.

 

OK, the TS is in search of an electric motor MUCH MORE POWERFUL than whatever it is that they have now.
The problem I see the very first is that I have no clue at all as to what level of motor or what actual power level is available to drive it. Nor do I have a clue as to how much space is available for the higher powered motor.
Besides all of that, what sort of faster driving??? I just watched a video of a dragster reaching about 323MPH in a quarter mile in quite a bit less than 5 seconds. That was a top fuel rail dragster not really suitable for much else. And I have an RC car that can drive around inside and bother a cat, and give a dog something to bark at. And I used to have a strange looking plastic dragster (PEELER) that would go fast and lose control quite well. Battery charge life was almost a minute, using a 9 volt battery on a 3 volt motor.

 

The transistors that switch between forwards and reverse and change motor speeds will quickly burn out driving a higher power motor.

 

We still have no clue as to the starting point. Is this a vehicle powered by 4 "AA" cells? Or powered by six "D" cells? Or a 7.2 volt NiCad pack?? And usually the term applied to describe an electric motor is "motor", while an engine is an internal combustion device.
And what I have seen is the original motor opwer connection wires used to operate an electromagnetic relay that switched the connection to the motor on. Only one speed setting, which was MAXIMUM, but it did work for that person's application.

 

And usually the term applied to describe an electric motor is "motor", while an engine is an internal combustion device.

Engine is often used by those where English is not their first language. !