March 15, 2019david Rear chassis replaced with 3A+ version (now in red). 24x holes drilled, countersunk and m3 nylock nuts heat inserted for grip.Next stage is to hot glue tops of nuts for insulation, then mount motor controllers above them.#piwars progress. pic.twitter.com/509CmKMI4u— David Booth (@Worlds6440) January 22, 2019