Schoolboy (oz13208)

 

Schoolboy (oz13208) by Bill Bowne 2020 - plan thumbnail

About this Plan

Schoolboy. Radio control sport model, for electric power. Wingspan 36 in, wing area 216 sq in. For 6mm depron foam, or similar material.

The Ken Willard Schoolboy (oz1030) first appeared in MAN, Jan 1962. This here is a modern redrawn version using foam construction and electric power.

Direct submission to Outerzone.

Quote: "Here are shots of a model I developed from the Outerzone plans. Here's what I did:

1. Downloaded the Ken Willard Schoolboy pdf plan file
2. Converted the pdf to a jpg via GIMP
3. Imported the jpg into LibreCAD
4. Resized the jpg to the wing area I wanted (which turned out to be almost exactly 100% )
5. Traced the general outlines. I DID increase the fin and rudder a bit, using Chuck Cunningham's design proportions, and I reduced the dihederal. My rationale was that I would be running a 6" prop at (relatively) low rpm, as opposed to the 3", high rpm prop Ken used on a Cox .010.
6. Replaced ALL the structure with foam and a handful of lite ply bits.
7. Replaced the original airfoil with a KFm2 airfoil AND made a second wing with a thin section so I could compare the two.

As a three-channel model, the Schoolboy came out 175 to 190 grams, depending on which Lipo pack I used. I did later add strip ailerons to the KFm2 wing, so the weight crept up to just over 200 grams.
Net result is that I now have a gentle, fun trainer-ish model, all made from foam. Bill Bowne"

Note for some more details on construction, and more pics, see Captain Dunsel's Schoolboy build log on RCGroups at https://www.rcgroups.com/forums/showthread.php?3826245-Ken-Willard-Schoolboy-in-foam

Supplementary file notes

Article (Build notes).

CAD file

This plan is available for download in CAD format.

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Schoolboy (oz13208) by Bill Bowne 2020 - model pic

Datafile:
  • (oz13208)
    Schoolboy
    by Bill Bowne
    2020 
    36in span
    Electric R/C
    clean :)
    all formers complete :)
    got article :)
  • Submitted: 27/07/2021
    Filesize: 361KB
    Format: • PDFvector • CADfile
    Credit*: Bill Bowne
    Downloads: 1000

Schoolboy (oz13208) by Bill Bowne 2020 - pic 003.jpg
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Schoolboy (oz13208) by Bill Bowne 2020 - pic 004.jpg
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Schoolboy (oz13208) by Bill Bowne 2020 - pic 005.jpg
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Schoolboy (oz13208) by Bill Bowne 2020 - pic 006.jpg
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Download File(s):
  • Schoolboy (oz13208)
  • Plan File Filesize: 361KB Filename: Schoolboy_oz13208.pdf
  • Supplement Filesize: 927KB Filename: Schoolboy_oz13208_article.pdf
  • CAD Zip Filesize: 312KB Filename: Schoolboy_oz13208_cad.zip
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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

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