After my friend Jonny bought himself a flying wing by robbe when all my aicrafts were grounded. I speculated on how quick I could build my own. I already had a small brushed motor with speed controlled form an old MS hornet (heli) by  MS Composit. Two $2 servoes, $16 DSM2 receiver and 2S 800mAh LiPo batteries I had laying.

Later that day I sat down with some 6mm depron and started cutting. I cutted one side of the wing first to make sure it was proper. Then i copied it onto another piece and glued them togheter with UHU and CA. A carbon list was installed for stiffness. To get buoyancy and more stiffness I chose to install some addional 50mm wide 6mm depron on leading edge of the wing. Known as KF-airfoil KFM-2.

Rudders were cut 30mm wide and some fin stabilators were added to the sides. The heavy yet small motor had to be installed closer to the front than first expected to make CG right.

CG were found using info from this site. and image.

I carved the batterydepartment throught the front to make the plane more areodynamic.

The whole thing landed on 168g included battery with an wingspan of 690mm.

The making of the plane took only one hour! Installing the rest and aerodynamic tuning for all the components was a bit longer.

Scratchbuilt wing

This entry was posted on Tuesday, August 17th, 2010 at 12:22 pm and is filed under Fun, Hobby, RC. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.