Brushless help

[coolhandcountry]

You had a hopped up emaxx two years ago. The upgraded internals has me worried. If you got the aluminum out put shaft and input shaft. They won't hold up well under alot of power. I have been thru them. If you go cvds the ue are the best. The robinson will hold up to some force. I think the strobe is alittle better for it has the mod 1 gears. I take it you still running the stock tub chassis. How many cells are plan on runng 12 or 14? If you stick with the stock diffs the 10 L may be a good choice for it won't be to hard on the driveline. I didn't catch tire size. If big tires it will be hard on drive line anyway. I love them though myself. If you want more power you can choose a 8xl or even 7xl depending on the run time you want.

I guess I am looking for something that will give me a balance of a significant speed increase without sacrificing the runtime. Do all brushless systems run on two series of batts at the same time? I just got 14 matched 3800 Ib's that I need to put together. And yes I am using the stock chassis.

[BrianG]

Not necessarily. People generally shoot for higher voltage so a motor with more turns can be used for better runtimes yet keep the power. If you use only 7.2v, you'll need a fast motor to get the speed you want. That kind of motor will have a lower turn count, but will require high currents. Runtime will suffer and you'll need strong batteries to deliver the current. If you use 14 cells (16.8v), you can choose a motor that has a lower kv rating and runtime will be better. Some people even go higher voltage for more speed if you want to get crazy (over 40mph). Just keep the max total motor rpm around 35,000-40,000 rpm for whatever turn motor you select.