old rc10 gt upgraded to brushless on 4 s 2200 mah and 4 s 2600 mah bad rear tires as u can see on the video tires are ballooning using a 14 t pinion latter will be upgraded to 18 or 22 to find how fast that elderly can go . i made the motor mount out of 2mm steel angle doesn't look very well but strong as ...... . all kind of comments are welcome . thanks