@Hai-Lee any more info on this project....
Sorry about the slow response but the internet has just been fixed here, (yet again!).
Anyway yes there has been progress and further developments. The first 2 prototypes have both flown and the thicker wing profile has given best flight characteristics.
Both prototypes have had a motor fitted to enable some real altitude to be achieved, (we have no slope soaring places anywhere near).
As gliders the original design was very light and had issues penetrating into the wind and even with motor etc fitted they still tend to float and need motor power to fly into the wind.
A simple 3mm Balsa spar has been proved to be far superior in strength and rigidity than the original FB spars.
Both prototypes have kissed the ground and so far only the battery compartment/fuselage has required repairs. The wings are very light and surprisingly strong for their weight.
Both prototypes have a minor level of dihedral and the next development prototypes may be without dihedral for performance comparisons.
In flight the birds are extremely pitch sensitive, (still working through the elevon settings at this time). We had 2 weeks of torrential downpours here and the ground is still waterlogged and the grass at the fields is like a forest!
a 1300mm wing span version is in build!
A moderate wing tip curl can be obtained relatively simply though tighter curl is proving extremely difficult without cutting the FB and gluing.
Original battery compartment/fuselage?, is simple but poor in appearance and so it is subject to redesign or even the consideration of alternate build materials.
The program is on hold at this time as the owners of the prototypes are on holidays overseas but the project is still active and the flight testing and the development is to continue until something of retail value is obtained!
Have fun!