D-Drive Sports F103 Monocoque chassis
Japanese company D-Drive Sports have shown the first pictures of their new monocoque chassis that they are making for the F103. This is a two piece chassis that replaces the top and bottom chassis plates on the F103 and is made from Carbon reinforced plastic just like their front suspension arms. The chassis when assembled is very stiff and the servo is mounted with the standard Tamiya servo mount, but what makes this special is that the screws are anchored to the top of the chassis. Also the rear suspension arm bolt is also anchored to the top of the chassis. You can see from the pictures that you can use the standard Tamiya battery mounts, which simply fit between the two piece of the chassis.
Source: D-Drive Sports [blogspot.com]