tramcar trev
all manner of mechanical apparatus...
Found this one that will handle up to 15 volts forward/reverse. It says its 72mm wide which I assume is over the length of the connecting wires....
http://www.ebay.com.au/itm/071-50A-400W-Brushed-ESC-W-Reverse-suit-with-540-550-600-motor-2-4S-lipo-RC-/200992137093?pt=UK_ToysGames_RadioControlled_JN&hash=item2ecc109f85
http://www.ebay.com.au/itm/071-50A-400W-Brushed-ESC-W-Reverse-suit-with-540-550-600-motor-2-4S-lipo-RC-/200992137093?pt=UK_ToysGames_RadioControlled_JN&hash=item2ecc109f85