How does the two piece wing for the Chrysalis work?

Does it also have a bolt on option? How much more weight does it add?

From : Don Stackhouse

Howard,

The two-piece wing is very simple. The two pairs of ribs at the root are replaced with new ones made from laser-cut plywood. These have holes provided in them for a carbon fiber joiner rod (positioned high in the A ribs and low in the B ribs so the dihedral is correct), and two alignment pins to keep the wing panels in proper formation with each other. There are also some special gussets on the B ribs to keep the joiner in position. We had to re-engineer the root airfoils a little to get the structural requirements to work out (so don't try to ad-lib your own by tracing the balsa A and B ribs onto ply, it won't work!), but this has no measurable effect on performance. The weight change is also negligible; the extra weight of the plywood ribs and joiner are offset by the elimination of the fiberglass tape around the root joint. The prototype wing with Lightweight Ultracoat weighed 3.4 ounces, essentially the same as a one-piece wing.

In the plans we show the same rubber-band wing attachment as the one-piece wing. This is simple and forgiving for beginners. We figure that the experts will come up with their own bolt-on wing option, and beginners will probably be better off not trying it unless they have an expert to coach them. The instructions are 27 pages already! It's easy enough to do, several of the prototypes have bolt on wings including the narrow fuselage version shown in the instruction photos.

Just use some leftover leading edge stock to make pegs at the front of the wing to go into the F2 fuselage bulkhead, and install a 1/8" lite-ply plate in the fuselage under the trailing edge for an 8-32 nylon hold-down screw, just like we use on the Monarchs. It's best to put the pegs at the leading edge either just above the l.e. dowel (so you don't cut the dowel) and anchor their aft ends in the A-B shear web, or epoxy them to the underside of the leading edge and reinforce them in place with glass tape (make sure to wrap the tape over the top of the leading edge a little bit). Like I said, probably just complex enough that a beginner should have an expert available to coach them! The weight gain from this is also negligible, since the weight of the dowels, glass, screw and plywood is about the same as the dowels and rubber bands in the standard version.

Don Stackhouse @ DJ Aerotech