I am using a 7" Club Car motor, in my compact tractor project, like this one but it is rated at 3.1hp at 48v.
Now from my calculations of Power = volts x amps that equates to:
3.1hp = 2,312W
2,312W / 48v = 48.2A.
In my thread in Batteries it was suggested that my 350A Curtis controller might be a bit small for my tractor.
That implies that I could be drawing more then 350A.
So, 350A x 48v = 16,800W
16,800W = 22.5hp.
So my thoughts go along the lines of:
Am I missing something or is this about right?
Will I fry my motor or snap my drive chain?
Are all those amps going to be consummed to 'make' the motor spin at 4200rpm under load or will it be at stall speed?
My assumption is that series motors produce torque, and that power is torque x rpm.
Therefore the motor can/will spin at up to 4200rpm up to the point where the load requires more then the 2.3kW power that the motor can develop.
The motor speed then reduces but draws more current to produce more torque.
The speed continues to reduce as the current increases so that the motor can draw 350A, producing lots of torque but little power as it is near stall.
Is this about right?
I know this has been explained before on other threads but if I got it the first time I wouldn't need to ask so bear with me please.
Machinery and industrial ac motor installations working at their rated power are so much easier to understand.
Thank you.
Now from my calculations of Power = volts x amps that equates to:
3.1hp = 2,312W
2,312W / 48v = 48.2A.
In my thread in Batteries it was suggested that my 350A Curtis controller might be a bit small for my tractor.
That implies that I could be drawing more then 350A.
So, 350A x 48v = 16,800W
16,800W = 22.5hp.
So my thoughts go along the lines of:
Am I missing something or is this about right?
Will I fry my motor or snap my drive chain?
Are all those amps going to be consummed to 'make' the motor spin at 4200rpm under load or will it be at stall speed?
My assumption is that series motors produce torque, and that power is torque x rpm.
Therefore the motor can/will spin at up to 4200rpm up to the point where the load requires more then the 2.3kW power that the motor can develop.
The motor speed then reduces but draws more current to produce more torque.
The speed continues to reduce as the current increases so that the motor can draw 350A, producing lots of torque but little power as it is near stall.
Is this about right?
I know this has been explained before on other threads but if I got it the first time I wouldn't need to ask so bear with me please.
Machinery and industrial ac motor installations working at their rated power are so much easier to understand.
Thank you.