UltraFun AirSports, LLC
Challenger LSS build for Ken Heide

WINGS

	After finding out that the long wing LSS was simply an LSS with the old-style long wings, Ken and Dave struck a deal to have this plane become a new model that includes all the updated LSS mods.  I feel fortunate to yet again do the build for a new model (See http://www.ultrafunairsports.com/titanss.htm for the first time this happened.)  Ken's plane will be used for promotion of the new model.
	The new bottom channels will be a great improvement over the old style sheets.  A rivet fan tool makes easy work of marking the spar rivets.  Rib rivets are spaced at 4" intervals.  In the background you can see a compression strut channel clecoed on.
	A 1.5" aluminum angle works great for lining up the compression strut channel with the bottom of the wing (it's upside-down in this picture).  After you cut out 2" of the channel on each end, you need 4 rivets on each side to hold it in place.  This happens to work out to 16" spacing, with another 2" at each end.  So, starting at the end of the channel mark 2" (where you'll cut), 4", 20", 36", 52"  and 54" (which is 2" from the other end, and where you'll cut again.
	The new leading edge wrap is installed.
	Left wingtip ready for rivets.  The extended and angled tip takes up a lot more time than the standard tips.
	Good shot of the whole wing, almost ready for covering.
	Since this is a long wing and subject to more twist than its short wing cousin, I decided to box the wing tips instead of using the LSS brace that normally goes there.  There are a total of 3 braces, 1 for each rib, that makes this end of the wing very strong.
	Here's the finished wing tip.  It's easy to see how the factory came up with the flared wingtip.  I was told the original reasoning was to provide more wing area to the clipped wing.  Instead of making a new fiberglass tip for the longer chord, it was easier to angle it out and fill in the rest with aluminum ribs and sheets.  To me, it looked like making do with what you have in stock.  Molding a new wingtip and using  the same channel system as the root end would save a lot of build time.
	The finished left wing, ready for covering.
	The strobe lights came in, so they were mounted to the wingtips.  The mount was sanded down to the same shape as the tip, and fits well.
	As with the other wing, the tips were double-boxed.  This will make it very strong.
	Double box finished.
	Just a few more rivets in the aileron hinges and both wings are ready for covering.

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