36 volt motor

[Joseph Montgomery]

how many amps does a 36 volt golf cart motor pull

[Helirich]

As I understand it, it pulls almost unlimited at 0 Rpms. As you increase the Rpms, it draws less. This is kind of hard to reason. It's not that it draws less, it's therortical max draw is less. So there is no exact answer to your question.

[JohnnieB]

It will draw all the amps the battery pack can produce and the controller will pass for the first few feet of max effort acceleration from a standstill and a stock controller is typically in the 275A to 300A range. Aftermarket controllers are available that pass more than twice the amps of stock controllers.

When cruising at about 80% to 90% of max speed, the motor typically draws from about 50A to 75A.

[Volt_Ampere]

Controllers all will limit max current at startup.

[Helirich]

What if he has a resistor cart and he goes to full throttle?

[mutant]

resistor carts are always supplying full power-the resistors waste that energy to reduce speed-so a resistor cart should be run wide open to keep efficiency.....the slower you go the less miles you will travel per charge.......

[JohnnieB]

Originally Posted by Volt_Ampere

Controllers all will limit max current at startup.

Perhaps I should have said: It will draw all the amps the controller will pass and the battery pack can produce for the first few feet of max effort acceleration from a standstill; Rather than: It will draw all the amps the battery pack can produce and the controller will pass for the first few feet of max effort acceleration from a standstill.

[Helirich]

Originally Posted by mutant

resistor carts are always supplying full power-the resistors waste that energy to reduce speed-so a resistor cart should be run wide open to keep efficiency.....the slower you go the less miles you will travel per charge.......

My point is, no controller limiting the amps. If you at full throttle, no resistor limiting amps. In theory a resistor cart is more powerful than any controller.

Good question for JohnnieB, will a motor "draw" more amps from the battery if it is direct wired or going through a resistor.

[scottyb]

Originally Posted by Helirich

My point is, no controller limiting the amps. If you at full throttle, no resistor limiting amps. In theory a resistor cart is more powerful than any controller.

Good question for JohnnieB, will a motor "draw" more amps from the battery if it is direct wired or going through a resistor.

???

[JohnnieB]

Originally Posted by Helirich

My point is, no controller limiting the amps. If you at full throttle, no resistor limiting amps. In theory a resistor cart is more powerful than any controller.

Good question for JohnnieB, will a motor "draw" more amps from the battery if it is direct wired or going through a resistor.

"It depends on what the meaning of the word 'is' is."

With resistor type series drive when the pedal fully depressed, the only resistance between the battery pack and the motor is the intrinsic resistance of the cables and the incidental series resistance on any connections and contacts.

With a controller type series drive when the pedal is fully depressed, the same resistance exists plus the resistance of the forward biased MOSFETs. In addition, the controller will have a maximum number of amps it will pass.

If the same battery pack and motor are used, there is the potential for slightly more amps being drawn with a resistor type drive than with a controller type drive because there is slightly less resistance in series. However they don't use the same motors, so the theory that a resistor cart is more powerful than any controller cart, needs some qualification to be true.