The gyro I use is made by Futaba and is designed specifically for aircraft; I’ve no idea what the difference is between this and the helicopter type.
The fuselage consists of a fairly substantial front end with a rear section framework from ⅛" square spruce; the front section is built first as a unit and then the rear framework added.
Although the current trend is for interlocking “Liteply” formers I still prefer to use birch ply for these high stress areas. The formers are “notched” to key into the fuselage side doublers; this greatly increases the strength (even though the fit isn’t up to the standard found in CNC cut kits!!).
F2 has a hole cut to suit the fuel tank and consists of 4 pieces glued together for extra strength at the front cabane and front undercarriage mounting points. The rear undercarriage mounting cross member is also made from 4 pieces of ply.
Ply doublers will “tie” the formers together to form the front section.
