Build of the 35 size STILETTO kit from Walter Umland

[Airacobra]

That looks great Kenny. I am sure the paint job will really make it pop!

[John Sunderland]

Well! Here I am, screwing off for a decade and you finally start using the forums! Very nice work old pal. Wish I could make the Nats but I am now in Phoenix...with a Shark in the works in Lews honor. Thats a very fine looking set of bones Kenny! Best of luck with all.

[kenny stevens]

Thanks Bill  The one I flew in 1974 was very sensitive with 3 inch bell crank and 1 to 1 ratios .  Less's plane uses less flap and has a vary predictable turn.  Thats why we put the adj. elevator horn in. If the plane is light enough I can dial back some flap.

[George Grossardt]

I noticed two ribs spaced close together in one of the pictures.  What is that about?  I now this is an asymetrical wing.  Thought the difference would be across the entire half of the wing.

[kenny stevens]

Hi George      You will have to ask Walter about that

[kenny stevens]

Hi John  Great news   I plan on having a tribute to Lew photo at the nats classic event because of the number of Shark 45 and other McFarland planes that will be there.   Hey is your son still in Phoenix ?

[john e. holliday]

I noticed two ribs spaced close together in one of the pictures.  What is that about?  I now this is an asymetrical wing.  Thought the difference would be across the entire half of the wing.

If you look at the plans of this plane and others that was a way of keeping most of the rib spacing the same, but having a shorter out board wing.   That is my thinking.  I done it on a lot of the planes that were kit or plan built.

[builditright]

I noticed two ribs spaced close together in one of the pictures.  What is that about?  I now this is an asymetrical wing.  Thought the difference would be across the entire half of the wing.

Hi George,

The ribs are both evenly and equally spaced apart from each other so when you get to the end of the O.B. panel
you need that extra rib to keep the wing the correct span as Les' original.  This was also done with the kit because I wanted to keep it true to the way Les did his model (see photo of Orig.)

To make things easier to build a lot of modelers like to just re-space the ribs but changing or re-spacing the (OB) wing ribs to eliminate an extra rib located like this actually changes the taper of the L.E. slightly so we did not do that.  

[George Grossardt]

Walter,

Thanks for the explanation.  Makes sense.

George

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