dumbass
100 kW
My question is can I use 2- 48v 1500 watt BRUSH CONTROLLERS in series to run a single 48v 2000 watt motor? And of course use a single throttle. These are the throttles.
This is why…
Last year I stripped down an old mini lawn mower converting it to electric. My intent is not for mowing but simply a drivable lawn cart but it needs enough power to pull a waste cart. I’ve already installed a 24v to 72v brushed motor (I’m running on 48v batts.) with the following rating..
No-load rpm: 5600 at 48 volts; Can be used with voltages ranging from 24V to 72VDC
Maximum power: 790 watts (1.1 horsepower); Maximum stall torque: 5.4 Nm (760 oz-in)
Peak efficiency at 48V: 77% at 8 amps and 5000 RPM
Power and torque at peak efficiency: 296 watts (0.40 horsepower) and 600 mNm (85 oz-in)
The tractor has a 5 speed trans. At full power it was pulling 900+ watts. It did very well on pavement in all gears but once it hit the grass it was so dogged down it struggled in 2nd. gear. And that was without towing a cart.
I’m looking at 2 options…1) upgrade it to ether a larger motor (2.7hp vs. the current 1.1hp but with the same mounting). The problem is the new motor pulls over 2000 watts. Finding a 48v 2000 watt brush controller isn’t easy to find. Option 2 is to add a second (twin) motor that I’m already using. But twin motors have their own set of problems.
These are the specs for the possible new motor…
No-load rpm: 5800 at 48 volts; Can be used with voltages ranging from 24V to 72VDC
Maximum power: 2000 watts (2. 7 horsepower); Maximum stall torque: 13 Nm (1860 oz-in)
Peak efficiency at 48V: 82% at 15 amps and 5300 RPM
Power and torque at peak efficiency: 600 watts (0. 80 horsepower) and 1060 mNm (150 oz-in)
Any thoughts and/or recommendations are greatly appreciated.
BTW, I prefer to stay with this type of brush motor due to it’s physical mounting and shaft size.
This is why…
Last year I stripped down an old mini lawn mower converting it to electric. My intent is not for mowing but simply a drivable lawn cart but it needs enough power to pull a waste cart. I’ve already installed a 24v to 72v brushed motor (I’m running on 48v batts.) with the following rating..
No-load rpm: 5600 at 48 volts; Can be used with voltages ranging from 24V to 72VDC
Maximum power: 790 watts (1.1 horsepower); Maximum stall torque: 5.4 Nm (760 oz-in)
Peak efficiency at 48V: 77% at 8 amps and 5000 RPM
Power and torque at peak efficiency: 296 watts (0.40 horsepower) and 600 mNm (85 oz-in)
The tractor has a 5 speed trans. At full power it was pulling 900+ watts. It did very well on pavement in all gears but once it hit the grass it was so dogged down it struggled in 2nd. gear. And that was without towing a cart.
I’m looking at 2 options…1) upgrade it to ether a larger motor (2.7hp vs. the current 1.1hp but with the same mounting). The problem is the new motor pulls over 2000 watts. Finding a 48v 2000 watt brush controller isn’t easy to find. Option 2 is to add a second (twin) motor that I’m already using. But twin motors have their own set of problems.
These are the specs for the possible new motor…
No-load rpm: 5800 at 48 volts; Can be used with voltages ranging from 24V to 72VDC
Maximum power: 2000 watts (2. 7 horsepower); Maximum stall torque: 13 Nm (1860 oz-in)
Peak efficiency at 48V: 82% at 15 amps and 5300 RPM
Power and torque at peak efficiency: 600 watts (0. 80 horsepower) and 1060 mNm (150 oz-in)
Any thoughts and/or recommendations are greatly appreciated.
BTW, I prefer to stay with this type of brush motor due to it’s physical mounting and shaft size.