Jones S-125 (oz3788)

 

Jones S-125 (oz3788) by Lou Garami - plan thumbnail

About this Plan

Jones S-125. Scale rubber model.

Quote: "Here is an unusual one, the Jones S-125, a 20in span scale rubber model from Flying Aces magazine. The plans were cut up and placed on multiple pages of the magazine. I assembled them and copied and flipped the half top view with half a stabilizer to make a full top view and a complete stabilizer. I also added the photo."

Also republished in Modellismo Nov-Dec 1994.

Update 10/6/2022: Added article.

Quote: "Build the Jones S-125. By Louis Garami.

One of the most attractive arrivals on the American light plane tarmac, the Jones S-125 is 'the berries' for the rushing businessman or the private pilot. She's a two-seater with dual controls, will hit a top speed of 151 mph, and will come down to an easy three-pointer at 46 mph. Of course, we can't all own an S-125 right away - but we can build a mighty realistic flying model of the ship from the simplified plans and instructions given in this article.

To the steadily growing number of light sports planes in America, the Jones S-125 is one of the most striking ad-ditions. This two-seater is a low-wing monoplane of ex-ceptionally clean design, and its high performance places it right at the head of its class.

Equipped with a Menasco four-cylinder in-line engine of 125 hp, the S-125 has a top speed of 151 mph and a cruising speed of 136 mph. And in contrast with these speeds, the ship lands relatively slowly. For despite the fact that no landing flaps are employed, the craft 'sits down' at 46 mph.

Construction of the ship is strong and sturdy, being based on a steel tubing fuselage, cantilever wings, and husky landing gear with metal fairings. Dual controls are standard equipment on the ship, a feature that makes it feasible for flying schools to use the S-125 as a basic trainer.

The ship is built, incidentally, by the Jones Aircraft Corporation, Schenectady County Airport, Schenectady, New York.

The body construction of our model Jones S-125 has been decidedly simplified, and the tedious job of fillet carving is entirely eliminated. However, the pleasing lines of the original ship haven't been lost or even altered by oui omissions, as a single glance at the accom-panying picture will show. And now you've looked at the snaps, let's get to work and build your Jones S-125.

Construction: You will notice that the body sides are made from sheet balsa, through which type of design we hope to speed up construction and do away with the crooked bodies that sometimes result from built-up sides. But it is very important to use two sheets of balsa of equal strength and thickness for these sheeted sides.

Get the softest balsa you can (size 2 x 36 x 1/16 in) and cut out the two sides carefully (Plates 1 and 4). Pin them together and sandpaper their edges lightly to get both pieces exactly alike. And now the actual construction should be started by beveling the tail ends slightly and cementing the sides together at that point.

Next the top and bottom square crossbraces of 1/8 sq stock should be added, starting at the back and working toward the front. Continue by cutting out all the formers with a sharp razor blade. Soft sheet balsa, 1/16 thick, is used for this purpose. Note that Formers 3 and 7 (Plates 1 and 4) have the usual notches, while the others are without cuts. Cement all the formers in place, and then attach the middle stringers on top and bottom..."

Supplementary file notes

Article.

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Jones S-125 (oz3788) by Lou Garami - model pic

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ScaleType:
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    ScaleType: This (oz3788) is a scale plan. Where possible we link scale plans to Wikipedia, using a text string called ScaleType.

    If we got this right, you now have a couple of direct links (above) to 1. see the Wikipedia page, and 2. search Oz for more plans of this type. If we didn't, then see below.


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Scaling

This model plan (like all plans on Outerzone) is supposedly scaled correctly and supposedly will print out nicely at the right size. But that doesn't always happen. If you are about to start building a model plane using this free plan, you are strongly advised to check the scaling very, very carefully before cutting any balsa wood.

 

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