looking for a 6v motor

[DOM01974]

hiya all can anyone tell me what sort of 6v motor to use it needs to have a good amount of torque to pull a small wooden door open using some string has to be 6v i dont have good knowledge on motors so some help would be appreciated

 

[Sceadwian]

good amount of torque

This is not a value that can be engineered for.

How heavy is the door, what is the distance it needs to travel and the required speed, and how much mechanical advantage to the string/pulley system provide? Approximate if you have to, but there is not enough information currently to provide suggestions.

 

[alec_t]

Is this for a hen-house?

 

[DOM01974]

yes the door is 6x8 inches, just under 1 kg the motor will sit 9 inchs away from door no pullys direct to motor

 

[Sceadwian]

Even the main bobbin is considered a pulley. The smaller the diameter the higher the torque.

 

[ronv]

Take a look on ebay at dc gear motors. You will find some nice little ones for about $10.

 

[Joe G]

how about looking at "powerwheels" toys etc........

 

[colin55]

Look on ebay for 6x8 inch automatic hen door with 6v motor for $10.00
Alternatively get an old printer and use the 5 pole high-torque percision motor to open and close your hen door. That's what I use.

 

[Sceadwian]

What do you use to drive the stepper colin?

 

[colin55]

Old printers don't use a stepper motor. They use photographic interrupt strip

 

[DOM01974]

tx all i got a few old printers ill see if i can get a decent motor of one of them

 

[Mr RB]

Real old printers, ie 1970's. I stripped a couple and got some nice DC motors with servo encoders. But from 1980's onward they pretty much all use stepper motors.

 

[DOM01974]

found a small motor with a gearbox out of a robot one of my kids old toys tested it lifts 3-4 kilo so its perfect now i need to find a timer iv seen a Immersion Timer for 240v its a mechanical one not sure if it will run 6v any idea's ???

 

[alec_t]

For a timer you could use a cheapo alarm clock. Use the beeper voltage to trigger a motor-driver circuit.