T-28D (oz12554)


T-28D (oz12554) by Paul Schaaf from Junior American Modeler 1973 - plan thumbnail

About this Plan

T-28D. Control line profile stunt model.

Quote: "Filling the niche between small beginner models and competition types, this .09-powered profile is ideal for the sport flier. T-28D, by Paul Schaaf.

This model of the North American T-28D was designed to fill a gap which I believe exists in U-Control. At one extreme we have the .049-powered learner models and, at the other, we have the super contest-stunt designs, but we don't see very many of the intermediate type for the Sunday Flier. After we learn to fly U-Control with the smaller models, the next challenge - and step up - should be the medium-powered model which has stunt capabilities. The T-28D is such a plane.

It has a symmetrical cross-section, built-up wing, is powered by an .09 engine, and flies great on 50 ft lines. Because it is light, an .09 engine with a 7 x 4 pitch prop really moves it around. The RC-type control horn on the stabilizer is nylon with four positions for the pushrod; the farthest one out from the stabilizer is for the learner, and the nearest one for the expert. Begin with the outermost hole, then use the intermediate settings as you gain flying experience. The plane can do any stunt you can handle. It is sturdy, economical to build and fly. It can be decorated in the exciting military colors. Give it a try. You'll enjoy it.

Fuselage: The body is cut from 1/2 in balsa sheet. Make the cutouts for the stabilizer, wing and engine mounting, as seen on the plan. Add the 1/8 plywood doublers to both sides of the profile fuselage. Note that the one on the right side has the cutout to receive the motor. Drill the 1/4 in dia hole for the wood dowel that supports the front landing gear strut. Sandpaper and file (use a round file or sandpaper wrapped around a thin dowel) the hole as noted on the plans..."

Direct submission to Outerzone.

Scans from dfritzke, cleanup by Circlip.

Update 09/11/2020: Added vectorPDF and CAD (dxf and dwg) versions of this plan, thanks to Valeria367.

Quote: "Hi! Steve and Mary. Good evening. ┬┐How are you? I hope all are fine. Today, I send you my latest CAD redraw: the Paul Schaaf's T-28D plan (oz12554), published in your web page some days ago. As usual, I attach the vector PDF, as well as both CAD vector formats: DWG and DXF.
All the best. From your friend. Valeria367"

Supplementary file notes

VectorPDF plan tracing.

CAD file

This plan is available for download in CAD format.


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T-28D (oz12554) by Paul Schaaf from Junior American Modeler 1973 - model pic

  • (oz12554)
    by Paul Schaaf
    from Junior American Modeler
    March 1973 
    30in span
    Scale IC C/L LowWing Military
    clean :)
    all formers complete :)
    got article :)
  • Submitted: 17/09/2020
    Filesize: 323KB
    Format: • PDFbitmap • PDFvector • CADfile
    Credit*: dfritzke, Valeria367

  • North_American_T-28_Trojan | help
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T-28D (oz12554) by Paul Schaaf from Junior American Modeler 1973 - pic 003.jpg
T-28D (oz12554) by Paul Schaaf from Junior American Modeler 1973 - pic 004.jpg

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