Radrover Controller Help

[walawn]

Hey guys. I have a 2016 Radrover that I want to increase the top speed on. It came with a 48V 11.5 Ah dolphin battery which I swapped for a 52V version. This gave me a little more top speed (24.5 mph). I want to get to 30 mph on flat ground. The rear hub motor is a 750W geared Bafang unit with a large 3 pin connector. I don't think the controller flows more than 16A. The Watt meter on the LCD never shows over 750. Here are the specs on the controller (basically everything that is written on the back):

Controller for brushless motor
Rated voltage: 48V
Maximum current: 22A
Rated current: 11A
Low voltage protection: 40V
Throttle adjustment voltage: 1.2V-4.4V
Product number: LSW765-28-6F X16604017077
Ex-factory date: 04 2016
CE: G3M20211-1592-16

I ordered this controller hoping that it would work, but the connection to the motor is all wrong (9 pin instead of 3):

http://lunacycle.com/sondors-upgrades/storm-hot-rod-20-amp-controller-36-52v/

 

[wesnewell]

If your motor only has 3 pins then it's a sensorless motor and requires a sensorless capable controller. The controller you bought has a connector for sensored motors and the website makes no mention I could find of being capable of running sensorless motors. If you want more speed, you will need to increase the voltage. Increasing the max amps isn't going to help much on level ground at all since your current controller isn't even maxing out now. Is your motor really a 750W motor, or a 250W motor with a peak rating of 750W? Big difference. Most Bafang motors are rated for 250W.
http://www.szbaf.com/en/components/motor.html

 

[walawn]

If your motor only has 3 pins then it's a sensorless motor and requires a sensorless capable controller. The controller you bought has a connector for sensored motors and the website makes no mention I could find of being capable of running sensorless motors. If you want more speed, you will need to increase the voltage. Increasing the max amps isn't going to help much on level ground at all since your current controller isn't even maxing out now. Is your motor really a 750W motor, or a 250W motor with a peak rating of 750W? Big difference. Most Bafang motors are rated for 250W.
http://www.szbaf.com/en/components/motor.html

Motor really is a 750W motor:

http://www.radpowerbikes.com/pages/radrover-technical-specs

Point is moot now until I get my new bike Tuesday to swap all the stuff onto. I just installed a BBSHD on the Radrover. I pulled all the old ebike stuff off last night and installed the BBSHD today. It would be nice to make the new conversion (regular fatbike to a "converted" Radrover) go faster than 22-24 mph so it will keep up (somewhat) with my new 1600W (w/ 52V dolphin) BBSHD Radrover.

 

[walawn]

If your motor only has 3 pins then it's a sensorless motor and requires a sensorless capable controller. The controller you bought has a connector for sensored motors and the website makes no mention I could find of being capable of running sensorless motors. If you want more speed, you will need to increase the voltage. Increasing the max amps isn't going to help much on level ground at all since your current controller isn't even maxing out now. Is your motor really a 750W motor, or a 250W motor with a peak rating of 750W? Big difference. Most Bafang motors are rated for 250W.
http://www.szbaf.com/en/components/motor.html

Here is the motor I have:

http://www.szbaf.com/en/components/component/motor/rm-g06750dc.html

 

[walawn]

bump

 

[wesnewell]

OK, so you need a sensorless controller if the motor doesn't have hall wires.

 

[docw009]

I see from the Bafang docs that Hall Sensors were an option on those motors. That's a show stopper.

Does it still use an external speed sensor? If you have any EE friends, one of them could hang a really simple divide-by-two circuit (just one chip) behind the sensor. Maybe it will fool the Radrover controller. Then you use a bike speedometer to determine your speed if you don't want to multiply by 2.

 

[walawn]

Thanks guys