At the end of the last article (which you can find here), I had come up with an initial design concept using a blend of FT Versa Wing and RiteWing Zephyr. In this article we commit knife to foam board and bash out a prototype…

Planning out the FPV Wing

From the initial drawing it was only a matter of adding a number of lines and measurements before I had a completed plan. This was then sliced up and converted to PDF so it could be poster printed.

Initial sizing meant I would be using one large sheet and one standard sheet of foam board; not bad for a wing of this size.

FPV Wing Plans

The plans printed out and stuck together.

The eagle-eyed of you will notice that I somehow managed to flip the smaller sheet, giving me two left wings (again!). Fortunately I didn’t get to the end of the build before I worked it out this time.

Cutting the FPV Wing components

By this stage my new GoPro Hero 3 had arrived so I put it to good use capturing some time-lapse footage of the build. This first video shows just how quickly you can cut an entire model from foam board.

Assembling the FPV Wing airframe

Moving quickly on, it was time to fire up the hot glue gun and start sticking some foam together. For a prototype I was really pleased with the fit of the parts. There was a slight misalignment in the lower wing panels and they had to be trimmed back to allow the elevons to move freely but that was about it.

As with the Versa Wing, the strength in the final wing is astonishing. I have no doubts as to this design’s ability to withstand some bumps and scrapes. The other thing that is really surprising is the difference the central section and a couple of inches on each wing makes to the size. Here is the final airframe next to a standard Versa Wing for comparison…

FPV Wing and Versa Wing

She certainly is a big beast!

Next time…

In the next article I am going to tackle the radio installation and also the installation of the FatShark FPV gear. Getting excited now for the maiden flight…