Rational brushless motor choices for custom 2-motor RC car?
With my 3D printer and Arduino at the ready, I set out to make my own RC car from scratch as an electrical project/challenge. My dream is a 30-40+ mph controllable AWD with ackerman steering in the front that can do casual road/grass/slight terrain driving but can also push speed up on a straight track. My current idea is to have a motor in the front and back to drive their respective 2 wheels for AWD and more torque (plus im planning to experiment with a gearbox/transmission in the back but thats a different story).
Im stuck on my motor choice [insert millions of buzz lightyears meme]. I've fully settled on brushless, (slightly) sure of 3S li-po, and have been thinking of going with the 540 (same as 3650?) size. I'm new to the hobby and now know that most off-the-shelf RC cars use a single motor to power all wheels via a driveshaft, and that some high-end motor upgrades use a single 3650 to go way faster than 40mph (I know size doesnt mean too much in the output of the motor, theres the whole dictionary of factors like kv, turns, torque, bearing type (apparently), etc.), but im still worried 2 motors like these are a little overkill.
I expected to spend a good amount of money on this project, but I found a hobbywing 3650 esc combo for 100$ each, which totals 200$ for motors alone (excluding shipping).
I'm asking those of you who have any sense in this hobby at all - so more experience than me - what a rational spec sheet for a goal like this would be (is a 60A ESC viable? I dont know what difference an 80/120A esc will make) and some SKU recommendations (safe to say that chatbots arent helping). Any help is appreciated : D