meatmonkey
I wanna be Dave
I installed a newer style 12V Dewalt motor, part # 396505-20, in my 3905 Maxx after smoking the Titans in less than a dozen runs. Best bang for the buck IMO. I picked it up at a local tool store for about $38. I think that Sears can also order them. Probably be a good idea to get a spare set of brushes with it.
With the stock junkish 3000mah 7 cell packs that came with my Maxx it will pull standing start, bumper dragging, wheelies on pavement for the first couple minutes of the run. The Titans would never pick the front end up. Top speed is comparable to stock, it just gets there much quicker. Even running in sand pits the Dewalt stays cooler than the EVX and the batts (which are starting the melt the shrinkwrap....).
It is not exactly a direct fit, but it is worth the effort to make it fit. The Dewalt takes 4mm mounting screws, and you have to pull off the factory pinion (I used a battery terminal puller), grind a flat spot on the shaft, and get a 5mm bore pinion. I run a 20T Robinson Racing pinion. I don't think that a smaller one will fit as the motor can is touching the trans case as it is with a factory 68T spur. The factory gear cover even still fits!
You have to solder the wires and capacitors from the Titans onto the Dewalt. Being lazy,I ran it without the capacitors with the stock AM radio and range was about twenty feet. With the caps there haven't been any issues. Getting enough heat to the can to solder the caps is time consuming and mildly frustrating.
I drilled some new holes in the stock motor plate and mounted up the motor with three screws. The Dewalt is much heavier than your average RC motor, and I do bash particularly hard. So, I have bent two factory plates now, and am building a replacement out of 1/8 plate steel to hopefully fix the problem permanantly. When I bent the first plate (landing from ten feet up on the nose) the crimpings holding the front of the motor to the can tried to pull apart. I've since tack welded the front bearing retainer to the can in a few places.
I've searched for a replacement motor plate that accepts the wider 29 mm spacing of the Dewalts mounting screws and takes the 4mm screws, but I haven't had any luck. Seems like this is an untapped market.
With the stock junkish 3000mah 7 cell packs that came with my Maxx it will pull standing start, bumper dragging, wheelies on pavement for the first couple minutes of the run. The Titans would never pick the front end up. Top speed is comparable to stock, it just gets there much quicker. Even running in sand pits the Dewalt stays cooler than the EVX and the batts (which are starting the melt the shrinkwrap....).
It is not exactly a direct fit, but it is worth the effort to make it fit. The Dewalt takes 4mm mounting screws, and you have to pull off the factory pinion (I used a battery terminal puller), grind a flat spot on the shaft, and get a 5mm bore pinion. I run a 20T Robinson Racing pinion. I don't think that a smaller one will fit as the motor can is touching the trans case as it is with a factory 68T spur. The factory gear cover even still fits!
You have to solder the wires and capacitors from the Titans onto the Dewalt. Being lazy,I ran it without the capacitors with the stock AM radio and range was about twenty feet. With the caps there haven't been any issues. Getting enough heat to the can to solder the caps is time consuming and mildly frustrating.
I drilled some new holes in the stock motor plate and mounted up the motor with three screws. The Dewalt is much heavier than your average RC motor, and I do bash particularly hard. So, I have bent two factory plates now, and am building a replacement out of 1/8 plate steel to hopefully fix the problem permanantly. When I bent the first plate (landing from ten feet up on the nose) the crimpings holding the front of the motor to the can tried to pull apart. I've since tack welded the front bearing retainer to the can in a few places.
I've searched for a replacement motor plate that accepts the wider 29 mm spacing of the Dewalts mounting screws and takes the 4mm screws, but I haven't had any luck. Seems like this is an untapped market.
