Hi.
Finally i've finished to built my revo conversion.
In the first release of my project i've used a VXL system but it died after two weeks for too much KV of the motor in comparison with the weight of my truck.
Now i've installed:
-MM
-Feigao 8XL
-rc-monster motor mount
-7,5 A ubec
-3 30x30 mm brushless fans. The one on the esc is fixed with red silicon (loctite).
-3S 4500 Polyquest battery.
I've an answer for you. I'm going to remove the first-gear and use the monster with only the second gear. What pinion and spur will you use?