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Ailern spar

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Well-Known Member
Sep 13, 2006
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Ok...here's my quandery/question.....

On page 3, chapter 1, section C of the builder's manual (yours) it looks like you tapered the spar and the leading edge to fit the end tip rib. On my plans, it shows that the spar is same dimension end to end, and the filler stip is tapered to zero on the ends. I checked the Steen manual and see nothing on this.

Why did you guys taper the spar? Is it because you routed a hole in your ply rib instead of using a butt joint on the tip rib?

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