Alert (oz4909)

 

Alert (oz4909) by Michael Latorre from Air Trails 1942 - plan thumbnail

About this Plan

Alert. Free flight gas model. For Forster .29 power.

Quote: "THE original ship from which the Alert was developed was a bit smaller than the final model. Powered by a Bantam and having a wingspread of 42 inches it performed remarkably well. Following several test flights it was lost on a ten-second motor run with low power, disappearing after a twelve-minute flight. Later, when the author had acquired a Forster 29. the larger ship was built.

Luckily we had retained our original building sketches and from these the larger ship was designed. Due partially to the greater efficiency of a larger wing (with better airfoil characteristcs) the Alert is now presented in the improved version, and we can assure all who build it a real championship performance. An unusual feature of the ship is the fact that among the builders it is known as a 'prop-saver.' In nearly 150 flights with both planes not a single prop has been broken.

For strength and rigidity, the fuselage is built around a 'crutch.' This piece of 1/4' x 1/2 in medium balsa is the basis of firm construction and must be true to keep the finished ship in good trim. You will note that the crutch, at the front, is spliced to the gumwood motor bearers. This step should be taken first, and when the joints are thoroughly dry, form the crutch. This is done by building it as it would look if you were a top of it, looking down. The crutch may be pinned to the table top while cross braces are cemented in place. Allow this assembly to dry thoroughly. After this step, and without removing the crutch from the plan, the top formers (marked T) may be cemented in place. It is advisable to line these up well before allowing the cement to harden... "

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Supplementary file notes

Article pages, text and pics.

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Alert (oz4909) by Michael Latorre from Air Trails 1942 - model pic

Datafile:
  • (oz4909)
    Alert
    by Michael Latorre
    from Air Trails
    December 1942 
    53in span
    IC F/F Pylon
    all formers complete :)
    got article :)
  • Submitted: 10/10/2013
    Filesize: 559KB
    Format: • PDFbitmap
    Credit*: JJ

Alert (oz4909) by Michael Latorre from Air Trails 1942 - pic 003.jpg
003.jpg

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Notes

* Credit field

The Credit field in the Outerzone database is designed to recognise and credit the hard work done in scanning and digitally cleaning these vintage and old timer model aircraft plans to get them into a usable format. Currently, it is also used to credit people simply for uploading the plan to a forum on the internet. Which is not quite the same thing. This will change soon. Probably.

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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