Custom "Spark" wings/stabs...from a Spark!

Custom "Spark" wing and stab kits from masters champion Dave Snow are available:

Spark wing kit featuring laser cut ribs, DVD manual and full size plans $90.00
Spark wing jig to simplify and speed construction $75.00
Spark inspired 4 degree an-hedral stabilizer kits $60.00 (includes building jig)

Dave Snow has created a very nice wing and stab kit which will save 5+ ounces for the wings and 3+ ounces for the stabs. The wings are exact replicas of the original Krill Spark (newest have smaller/larger ailerons?). The 4 degree an-hedral stab will save at least 3 ounces. The stab is not an exact copy (no notch at tip) but with similar airfoils.

My wings and stabs are ready to cover and I am looking forward to flying the new "Spark" flying surfaces on my Integral in 2010 and appreciate Dave's engineering skills. Dave can be reached @ [email protected] for more information.

Dave sent me the following to post:

"...

There are two wing rib kits that I have: one based off the Spark wing and one based off the Passport wing. At this time I do not have a direct replacement for the Integral but what we did for my dad was to use the Spark wing on his Integral to reduce the overall weight of the plane (14.5 oz panels finished with servo) and help the snaps, it did both of these. The ribs have the original Spark dihedral of 7/16" cut into them (Integral is 1/2" dihedral) but this can be easily adjusted during construction. My dads plane still needed a slight amount of mix, less than 3%, in roll so it could use maybe another 1/16" added to make the dihedral 1/2". The Spark uses a 30 mm dia tube (same as the Integral) and the PassPort uses the 7/8" dia tube, not supplied in the kits.

There is also a stab rib kit based on the Sparks stab general size but simplified with the addition of the 4 deg anhedral. We have not flown this stab but after building several they seem very stiff and light. The root ribs of the stab have a slot for a Gator adjuster, but is not required if you would like the original anti-rotation system. On the Integral my dad was flying last year the finished stab panels were over 4.5 oz each, these new ones we have finished for him each weigh 3 oz. The original plane's stab tube can be reused with a paper socket in the stab panel, there are several pictures showing this.

Here are pictures of the wings and stabs under construction. The CD that Rusty mentions has more of these pictures, no step by step instructions. The set of pictures "sp" are the first Spark wings panels being built without a jig, the wing jig is shown in the "j" pictures and the "s" pictures are the stab.

The kits contain the plans, ribs (3/32"), spars (1/4"), web shearing (1/16") and root ribs / doublers (1/8" lite play).
Additional material required: glues, 3/32" balsa sheeting (4"x36"x16 pcs wings, 3"x36"x6 pcs stab), 1/4" balsa leading edge, 1/2" balsa aileron/elevator leading edge and 1/2" balsa for tips. Miscellaneous wood for mounting servos and hardware, socket material for wing adjusters and stab adjusters for stab. Also a 30 mm x 600 mm PBG wing tube and socket is needed for the wing and the stab can reuse the original tube with a paper socket in the stab panel.

Please let me know if you have any more questions or I confused you too much.

Dave Snow

..."


Rusty Dose
Team Futaba