Remote control bike - Steering motor, gears/pulleys and encoder selection

Other Hardware Motors, Mechanics, Power and CNC
1

I am trying to make a remote control bike. So far I have an ebike kit on an old bike with adult stabilisers (turned out they exist!) to stop it falling over. I am controlling the hub motor speed with a DAC so can move but have failed with the steering.

My attempt was using T5 pulleys and belt designed for CNC with a stepper motor. See photo - I had to cut the handle bars off after various attempts to un-seize the steering column failed...
The torque proved insufficient and I found mounting it all very difficult.
2.2 Nm stepper and ~4:1 ratio on the pulleys. So around 8 Nm was not enough. I think 16Nm would do it. Also I had no encoder which proved an issue.

Does anyone have suggestions of how to do this better?
I will be putting in new forks with a 1 1/8" steering column. I found this motor - seems to make sense to use a worm gear for low RPM and position holding reasons.

But have no Idea how to connect it to a 1 1/8" threadless steering column... Or how to mount an encoder to it as well.

Any suggestions much appreciated!

20181129_104510.jpg
20181129_104510.jpg1512×2016 753 KB

2

Hi, and welcome to the Arduino forum.

Your questions are not Arduino relates, but I would use something like THIS and pin it to the fork tube.

Then find a sprocket with the same pitch to fit your motor/gear output shaft. Chain drive will not slip and cause accidents.

Paul

3

Thank you Paul that is very helpful. I hadn't thought of using chain and sprokets. I shall get searching.

Sorry it's not directly arduino related, I saw lots of seemingly not related posts so was unsure if it mattered or not.

4

Junglist:
Thank you Paul that is very helpful. I hadn't thought of using chain and sprokets. I shall get searching.

Sorry it's not directly arduino related, I saw lots of seemingly not related posts so was unsure if it mattered or not.

Probably 50% of the questions in the project section are not Arduino related. Fewer in the motor section, but very common.

I guess there may be an Arduino somewhere in your project!

Good luck,
Paul

5

Hi there, i got into this forum because i read it is related to arduino codes
. I have a problem maybe someone can help me to solve.

The case is that a i want to build a one to three phase inverter and a guy from Pakistan helped me with the code, i dont thinks this code can work the way it was written so that is why iam asking for your help, this is the code:

int led1 = 2; // Pulse 1
int led2 = 3; // Pulse 2
int led3 = 4; // Pulse 3
int led4 = 5; // Pulse 4
int led5 = 6; // Pulse 5
int led6 = 7; // Pulse 6

int cont = 0;
int val = 8;

int R = A0; //run
int S = A1; //stop

void setup()
{
// initialize the digital pin as an output:
pinMode(led1, OUTPUT);
pinMode(led2, OUTPUT);
pinMode(led3, OUTPUT);
pinMode(led4, OUTPUT);
pinMode(led5, OUTPUT);
pinMode(led6, OUTPUT);
// initialize the analog pin as an inputs:
pinMode(R, INPUT);
pinMode(S, INPUT);
}

void loop()
{
if ((digitalRead(R) == LOW) && (digitalRead(S) == HIGH))
{
forw();
}
}

void forw()
{
while (1)
{
if ((digitalRead(R) == HIGH) && (digitalRead(S) == LOW))
{
digitalWrite(led1, LOW);
digitalWrite(led2, LOW);
digitalWrite(led3, LOW);
digitalWrite(led4, LOW);
digitalWrite(led5, LOW);
digitalWrite(led6, LOW);
break;
}

digitalWrite(led1, HIGH);
digitalWrite(led2, HIGH);
digitalWrite(led3, HIGH);
digitalWrite(led4, LOW);
digitalWrite(led5, LOW);
digitalWrite(led6, LOW);
delay(val);

digitalWrite(led1, HIGH);
digitalWrite(led2, LOW);
digitalWrite(led3, HIGH);
digitalWrite(led4, LOW);
digitalWrite(led5, HIGH);
digitalWrite(led6, LOW);
delay(val);

digitalWrite(led1, LOW);
digitalWrite(led2, LOW);
digitalWrite(led3, HIGH);
digitalWrite(led4, HIGH);
digitalWrite(led5, HIGH);
digitalWrite(led6, LOW);
delay(val);

digitalWrite(led1, LOW);
digitalWrite(led2, HIGH);
digitalWrite(led3, HIGH);
digitalWrite(led4, HIGH);
digitalWrite(led5, LOW);
digitalWrite(led6, LOW);
delay(val);

digitalWrite(led1, LOW);
digitalWrite(led2, HIGH);
digitalWrite(led3, LOW);
digitalWrite(led4, HIGH);
digitalWrite(led5, LOW);
digitalWrite(led6, HIGH);
delay(val);

digitalWrite(led1, HIGH);
digitalWrite(led2, HIGH);
digitalWrite(led3, LOW);
digitalWrite(led4, LOW);
digitalWrite(led5, LOW);
digitalWrite(led6, HIGH);
delay(val);

digitalWrite(led1, HIGH);
digitalWrite(led2, LOW);
digitalWrite(led3, LOW);
digitalWrite(led4, LOW);
digitalWrite(led5, HIGH);
digitalWrite(led6, HIGH);
delay(val);

digitalWrite(led1, LOW);
digitalWrite(led2, LOW);
digitalWrite(led3, LOW);
digitalWrite(led4, HIGH);
digitalWrite(led5, HIGH);
digitalWrite(led6, HIGH);
delay(val);

}
}

Do you think this code will work?

6

If you are not here to help the original poster, you should start you own thread.

Paul