BackPack FT 22

Most of the „standard“ BackPack planes are capable of taking the wings off and maybe splitting them in two pieces but this F22 can even be separated in four of them! It fits into the smallest BackPack you have and all modifications weigh 7 grams in total … don not worry about them. Have fun at reading the build log and see the video below.

Use common materials and build your own BackPack fighter or convert an old plane in less than an hour.
I started with the big wing plate included in every kit or easy to cut out from the plans. Additionally some small 3mm carbon-fiber spars and aluminum channels are needed. If you want to go cheap, replace them with barbecue skewers and drinking straws. You will need four spars and 8 or 12 channels.

Mark the locations for the reinforcement above and underneath the motor location, it does not have to be too precise…

Cut the spars in length and do so with the aluminum. By taking out the center section of the longer parts the construction gets at least a little lighter but the loss of weight and stability is minimal.

Open up small slots and glue in the spar and the channel on the short inner side. On the outside, only the channels itself shall be fastened so you can pull out the wing later.

Repeat all steps four times and finally glue a small piece of another barbecue skewer onto the top and bottom of the trailing edge to lock the wing in place.

As the very last step, cut the wings out but leave at least 1cm (0.5inch) of space to the open area of the motor. The side plates will give back the stability for the body part but there will be needed some foam to glue on…

To fix the wings back on, two small straps of velcro on the wings and body give a strong connection. As you will see in the video, the wings always stay in place but in a crash they might rip off and safe you from greater damage.

The nose can easily be left in the original setup. Reinforce the corners like you can see in the video and do not use any glue. Fix it like a powerpod and it will never come loose in flight!