Here's some pictures (camera's horrible, please excuse the quality):
The Damage:
(note the bald tires.. brand new to bald in about 20min of runtime..)
This is from the plywood wall I hit..
countersunk all the battery tray holes:
The quality is horrible, but you can kind of see the two fans mounted. the controller's zip tied to the heatsink, and that's laying on the piece of PCB, then the fan is at an angle blowing air through the heatsink from the front..
The motor heatsink is just zip tied around the motor. The red switch that's behind the center diff turns the fans on and off. You can also see the parallel adapter I made. two inputs from the batteries, and two outputs, one for fans, one for the controller.
Here's the piece of plastic I made to keep the screws from hitting the batteries. Then I put a piece of foam between the plastic and the battery, and they don't move at all once strapped in.