Hi Everyone,
    My first bulldog combo is as per the suggestion, 3:1 gearboxes with speed 400 graupner motors,I really happy with it.
And my friend who also have another bulldog just want to make another combo which is 3:1 gearboxes with speed 540 motors[X(] and he said he'll modify the gearbox housing to provide more room for the bigger motors. How you guys think about it? Other things are similar to mine such as, RX18 with vent fan,high capacity batt.,metal tracks,...etc
     I think if he succeeded he would gain more both power and speed, do you think so?