May be you have tuned up every acceleration / deceleration to MAX , like you did with the brushed .
I wouldn't .
If not it steers like a drunk...
I am used to a chair that begins to turn at the exact controlled rate I choose, instantly, like my mouse/car does and stops turning and steers at a different rate if I increase turn or decrease it instantly. If it doesn't do this or hesitates, or continues to turn, it goes where the hell it chooses, rather than where I choose!
Around the 0.01mph speeds, and stopping, or zero turning, stalling, etc it becomes very vague and inaccurate. The earlier brushless chairs are the same. I have a Storm 3 too. Its the nature of these brushless motors. I am used to razor accurate RC helis etc. If theres a 0.1 sec delay, thats a called a crash! The heli must do as its told, and stop doing it instantly when its told in absolute real time. My PG chairs do this almost as well as my helis. Once programmed. The problem stems from the starting torque and from the lack of positional accuracy of a stopped motor. You can feel it figuring out which way, and trying to be smooth. Its not that its bad. Its just different, with no real feel or feedback. Bit like a gyro turned up too high.
Maybe I am just picky!!!
True Track 2 Plus.
40 percent better torque than previous version, 125A according to programmer. Better connections, and slightly lighter. Still have stupid 1.75 rim width! Easily fixed fortunately.
http://www.invacare.co.uk/sites/uk/file ... 8b45b3.pdf