Ok, recently I wanted to try and make a truly RC lego car but I did not want to try and find the lego one since it's rare, huge, and might not offer as good performance, so (these parts are pretty pricey, but you get what you pay for) we got a motor controller, ESC and remote. The motor controller is pretty heavy-duty so I might use it in the future if I buy a hobby kit crawler. I got my 4th buggy motor, and we made a new battery pack from better batteries with twice the capacity and more power, and it's only a 3-cell pack for 4 motors so it saves on weight and space. I made a direct drive (no differential) but I think it will handle fine considering my last large PF car was the same way and it had no problems, and lego differentials won't be strong enough and will result in lower efficiency. I'm making the frame and front axle but have little time since school started again. I'm also waiting for the clear project box to keep the ESC and motor controller in, safe from damage. Here are the photos of it so far:
^ground clearance is low and there is some negative camber upon compression. I did this because it's simple, strong, and it will reduce the chances of it flipping at the speeds it will reach
^I love the way the motors and servo react to the new remote, all smooth and proportional as it should be, all is adjustable, my days of running after my large projects are finally over! I'll keep you guys updated when I make reasonable progress.