Guillows sheetwood flying models - the Zip nocals.

[simpleflyer]

The C-10 kit was quickly built up into a model ready for cover.

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Covered and ready for test flight.

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As a flyer it did well, but was kinda sensitive to wind.

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[simpleflyer]

After posting the DC series P-40 plansheet and the pictures of the scratchbuilt Avia we decided to build another profile swinger.

We had a set of built-up wings of the 500 series P-40 left over from another project. Using the DC series P-40 fuselage and tail shapes as patterns we made some cardboard templates.

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[simpleflyer]

First we strengthen the wing by gluing another layer of 1/16 sheet balsa to wing leading edge and wing tips.

Using the templates, a profile fuselage and tail parts is cut from 1/16 sheet, hard for the fuse and soft/light for the tail.
1/8 sheet doublers for the forward fuselage.

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[regular guy]

simple flyer
looks like you're doubling the front of fuselage
is that a swing flying technique?
the flat fuselage and airfoil wing sort of survives in today's Cloud Buster
except the tail is covered but flat

[simpleflyer]

regular guy

I don't think that doublers are so much a swing control technique. I've seen it applied to variety of different types of flying models mostly profile models. I use it to concentrate more weight and strength to the front of the model. Mostly for balancing and to give the model a better chance of surviving hard landings and crashes. Also in the case of the P-40 profile it makes for a more sturdy removable wing mounting.

[simpleflyer]

Today, we constructed the main part of the removable wing. It centers around a flat portion of the center section of the wing. A narrow cross grained hard balsa 3/8 inch wide strip joins the two wing sections. On this strip are glued two i/8 inch root ribs.

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Then we attach the wing sections to the center section strip and also attach the two root ribs to the strip. A scrap of 1/16 balsa is temporarily placed between the root ribs to assure that the ribs are perpendicular to the plate and that there will be 1/16 inch between the root ribs.

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The wing location is determined and 1/16 inch slot is cut at that location.

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[simpleflyer]

Test fit of the wing to the fuselage. Fits good.

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Gluing the vertical tail to the fuselage and cut wing slots in the doublers.

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[regular guy]

simple flyer
that is so smart picking out an area of building to concentrate on
you've got my two thumbs up!
is it ok if I be the free flight guy?
there's lots of room here
just have to look out for mesquite bushes

[simpleflyer]

Sorta busy today, not much work done on the P-40. Slot cut for the horizontal tail. Test fit of the parts. Starting to look like a profile P-40.

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[simpleflyer]

Doublers being glued to the fuselage of the P-40. A cavity and a couple of slots were cut in the fuselage to hold lead shot that will be used for balancing the model. The doublers are attached to the fuselage with the wing in place to assure correct alignment of the wing.

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[simpleflyer]

Covered and ready for test flight. If not windy tomorrow, we will give it a a try.

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[flash52]

You have a good start in the makings of a great control liner here. I'll bet it has no vices and and excellent dead stick performance. I'm looking forward to some flight pics.

[simpleflyer]

Thanks, flash52, for the kind words about the little P-40. It has turned out to be a good flier.

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But this was not to much of a surprise. The P-40 has flown well for me before. Back in the mid 1950s, I built this scratch built profile model powered by a Cox 049 Space Bug and it was a good flier also.

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Sorry, about the fuzziness as the image was cropped from an old snapshot from a cheap Kodak box camera. The P-40 was made from 1/4 balsa sheet. The plans were hand drawn using a Bjorn Karlstrom 3-view as the reference. The model was a very stable flier and provided many hours of enjoyment. I've been eyeing the plans of the Gu 400 series P-40 and it looks like it could be turned into a good profile swinger.

[simpleflyer]

We made several flights today with the P-40 even though it was kinda breezy for such a little airplane. The wingspan is only about `12 1/2 inches. The P-40 made a couple of collisions with the tool shed as we were trying it out on a 30 foot pole/line combination. Considering the breezy conditions, it flew quite well. However some damage was incurred, but can be easily repaired.

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A small ding to the nose.

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After straightening the stab, the P-40 was still flyable.

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[simpleflyer]

Reinforcement plates of thin ply added to the cracked area. If rain stops, maybe some more test flights, soon.

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