Recent content by Shenta

litespeed Yap, I was going to have an open source BMS project, in memory of one friend died in lithium battery fire, but the project have been stall for about 1 year now, hardware is finished, needs someone to code it, any volunteers?

Hello all at Endless Sphere, This is Shenta, I am the architect for this controller, I haven't come up on ES for a while until seen this post recently, when I first design this controller, I had a simple philosophy in mind, if it doesn't make people say "Wow", it doesn't worth the time and...

Hello All, As my earlier posts, I have been working on a commercial version of electric go kart for a while, and my kart can do from 7~15bhp of power, suitable for people from beginner to intermediate level of racing driving learning. It has arrived its final testing track, will be putting on...

Hey Gregory, Thanks for the encouragement, I am planing to design and make my own axial flux motor soon, base on this experience, I am hoping my new motor will be able to take the full advantage of my controller. Cheers Shenta

Hello Hillhater, glad that u r in kart sport also, the Rotax Max engine is certainly one of the very best out there, but as all gas engines suffered from low torque at low rpm, the acceleration of electric is definitely better. I can get 120Nm of motor shaft torque from 0~1000rpm, which does...

Hello All, Would like to share my latest project, electric kart with DLC-28 and my 72600 controller, packed with 22s 40ah MNC batteries. The goal was for 60hp, utilize every last drop of what DLC-28 could offer, but as I took the motor apart, it is somewhat disappointing, the wires they use for...

Hey Scott, Yap, Eric is the man you need to talk to, he have ordered one of the Red Devil too, hopefully more people can get and feel the joy of riding electric, in insane style. As for the design of our controller and motor, we put all the manual, file, 3D drawings in dropbox...

Hey Wally, Thanks for compliment, we do sell controller, but mostly together with the motor as bundle. What kind of e-max are you building, Gen1 or Gen2? Can you show us some pictures? Why you manage to do 26s cells? What is your charging voltage? We did tried 25s for LiPoFe4 on one of our...

Hey 4LivesPerGallon, sorry to answer some of your questions late too, you won't believe how much work is needed for a wedding. Why are there hub motors that powerful? The hub motors are very powerful and could be more powerful, because of the surface area of magnet and stator increase, the...

Hey Scott, sorry for the late reply, it is nice to see you up here too, I was just married last week, everything is kind tight up lately. Yap, I just talked with Eric, he will carry 72600 soon, and I am hoping to work out a deal for the controller + the motor as a package, so people don't have...

Yap, we did manage to find a Tesla Model S P80 for a test run, we were able to catch it up in the first 100 meters or so, in this video we used QS motor, which got alot of problem, overheat, broken shaft, failed hall sensor. After that we custom designed a special motor, and have 9C specially...

Thanks Luke, you are the legend here, feel so honored to get your compliment, I will build one bike for Eric from www.electricbike.com soon, after it is done and sent to US, I certainly want to have a ride with you on the track. Cheers Shenta P.S. My buddy Ben Chui have mentioned about you...

Hello all, I would like to share my electric mod Honda grom, after remove the gasoline engine, we put in a 45hp hub motor, with 72v 600amp (800phase) controller, and a 80ah of LiPoFe4 battery. We are able to achieve 0~60mph best record around 3.65sec with Q6000 racing logger, the build is not...

Hello Tom, you don't have much choice in the market now, Mobipus motor controller is your best bet for now, you may contact www.lunacycle.com for more information.

what motor are you running? izeman. I have been working with Ben on my controller for his duty cycle on Mac motor, Mac use delta winding, which has 30 degree shift than Y type of connection. It is hard to get sensorless working and also field weakening up on delta winding. Good luck