Hi guys. I notice my robots are being talked about.
I have been building a brushless drive feather and I did take it into combat but failed. The brushless motors and controller worked perfectly, it was the lack of money that forced me to make a dodgy drive train that was the problem. Sprockets slipping, chains coming apart, motors falling off, stuff like that. The 4WD test platform does work reliably, as show in the videos.
I used the 80A Trackstars as they were the biggest car brushless controllers on Hobbyking last year. That was fine with me as I think that the NTM 42-38 750kv motors are the biggest you will need for a feather weight drive, but that is just a personal opinion. I do run a 4 cell LiPo to try to get the most of the 750W the motors are claimed to out put. When working they produce a very simalar driving experiance to running 2 x 300W scootor motors in a feather weight, and since I know a 300W scooter motor can output closer to 500W, then a 750W brushless motor is probably closer to 500W when used for drive. But that is just eye-balling the robot driving around, so who knows.
The 150A Trackstar is a new product on Hobbyking, but it looks the same. I didn't need to spend too much time mucking around with setting on my 80A controllers and they robot drives the same as the old scooter motor / Victor 883 setups I used to use. If I ever get a job I'd like to try the new 150A Trackstar and a NTM 50-50 on 6 cells to drive an axe. An all brushless Avenger.