BestEquip Brushless Motor Kit,2000W 48V 42A 4300RPM High Speed Electric Scooter Motor,with Mounting Bracket,Speed Controller Bicycle Motorcycle Mid Drive Motor

I installed this one a Razor mx650. It did the job and my son is having lots of fun with it. The thing to understand is that the throttle input in most gas engines controls the amount of effort that the engine puts out. In this controller, it controls the desired speed and the controller will always put out maximum effort until the throttle speed is reached. How this feels different from a gas engine is that starts can be very jerky.

fast shipping. motor work controller does not. tested motor on another controller work fine.

The title specified the BLDC motor and drive to be rated to 2000W and specified 48V and 42A (48Vdc x 42A = 2016W) so I was a little taken back when opening the box and finding the label on the drive to specify max current of 34A. In spite of that the motor and drive seems to have adequate power for my application, and installation was straightforward. I also took apart the motor to take a peek inside and have posted a picture for people that may be interested. 6 pole motor with surface mount magnets on the rotor. The stator is concentrated coil type with embedded Hall effect sensors for commutation. Both aluminum end bells of the motor enclosure have numerous ventilation holes for inlet/exit of air for cooling. Seems to run fairly cool even after 30 minutes of continuous use.

I put this on my 6 year old's MX650 (he's been riding bikes since he was 2, so hold your judgement). I did this upgrade because his bike was overheating with the stock controller/motor and upgraded 48v 20ah LiFePo battery. I added a 3 speed switch to the controller (like $7). He has used all 3 levels. Level 1 goes to about 19mph, level 2 25mph, and level 3 31mph. Torque changes are minimal between levels. This motor and control have much more torque than the stock motor and control with an upgraded battery, which is great for the grass/hills.My only qualm is that 100% of the torque hits when the throttle first engages (when you slightly turn the throttle), even with the 3 speed switch wired to the controller. This makes it difficult for a young/light riders at low speeds, especially on the pavement. I wish I could tune it somehow, but it seems that I'd need a new controller to do that. Not much of an issue on the grass, except for him leaving bare spots 😁I've considered simply increasing the motor sprocket tooth count, which would reduce torque overall and increase top speed, but he likes/needs that torque for hills etc. and he definitely doesn't need more top speed. I'm not giving up yet, I'll try to update if I find a solutionOverall, it's been a great upgrade, which has fixed the overheating issue. He can ride for hours on end without the bike holding him back. I'd still like smoother torque delivery to reduce the abrupt load on the motor and make low speed manuevers more controlled. However, it's not a deal breaker, especially at less than $150.Side Note: I am an experienced electric bike rider. I have a Talaria Sting R, which has way more power and I wheelie it all the time, but the torque delivery is much better. I had a Surron before my Talaria R too.

e comprado el de 2K y al parecer el controlador con el que lo entregan no es el indicado para el me a tocado comprar un controlador mas eficiente para ponerlo a funcionar uno debería recibir el kit de motor como lo llaman que sea como el tuit que le venden no con una pieza que no funciona como kit