My first video link from Flite Test is one of their latest “Swappable” designs.

The FT Slinger is a scratch build foam board airplane setup with a swappable power pod. The FT Slinger design was inspired by The Ripslinger from Disney’s movie Planes.

– See more at: http://flitetest.com/articles/ft-slinger#sthash.jjmTyHH5.dpuf