I bought my new motor from Jay car, below is a link relating to the exact motor

http://www.jaycar.com.au/productView.asp?ID=YM2776

Here are the supplied specs on the motor km working with:


• Operating Range (V) 6-18


No load
• Voltage (V): 12
• Speed (rpm) 9700
• Current (A) 1.3

At Stall
• Torque (kg.cm) 6.0
• Current (A) 57

At Max Efficiency
• Efficiency (%) 73
• Power (W) 52
• Speed (rpm) 8490
• Torque (kg.cm) .60
• Current (A) 6.0

Dimensions
• Diameter (mm) 42
• Total Length (mm) 85
• Shaft Length (mm) 19
• Shaft Diameter (mm) 5.0
• Mounting Thread M4

Can someone please help me in determining the appropriate circuit to control this motor.....

 

Seems like Déjà vu all over again!

There are small PWM speed controllers on ebay for a few $ from H.K. that hardly makes it worth building.
They are simple 555 - Mosfet designed.
Max.

 

...Or if you insist on winding your own.
http://www.pcbheaven.com/circuitpages/PWM_Fan_controller_using_a_555/
Max.

 

...Or if you insist on winding your own.
http://www.pcbheaven.com/circuitpages/PWM_Fan_controller_using_a_555/
Max.

Nice link... I didn't know about the Pulse Stretching Method of controlling a fan's speed...

 

I hope that is a typo and the stall current is 5.7A not 57A. If it is 57A you are going to need a massive controller (and power supply)

Bob

 

According to all the other numbers it appears that it should be 5.7a.
That would be 684watts, which would be a little OTT for that motor.
Even the peak torque would not normally be that high for that motor.
Max.