Pacemaker (oz2429)


Pacemaker (oz2429) by JL Sadler 1974 - plan thumbnail

About this Plan

Pacemaker. Free flight low-wing gas model.

The original Pacemaker (oz1739) by JL Sadler was published in Jan 1940 Air Trails. This here is a later redrawn plan by Phil Bernhardt from an article in MB 04-74.

Wingspan 78 in , area 710 sq in, length 50 in, weight 56 oz, power Dennymite.

Direct submission to Outerzone.

Quote: "Old Timer Model of the Month. Pacemaker, by JL Sadler. Plans redrawn by Phil Bernhardt.

Until JL Sadler came along with his Pacemaker (not related to the high wing cabin model of the same name by Irwin Ohlsson), low wing models were considered strictly taboo. However, with a combination of low thrust line, small vertical stabilizer, and generous dihedral - plus good looks - the Pacemaker, published in the January 1944 issue of Air Trails, proved that it could be done.

But it was only an interlude. Low wing, free flying models never made it in competition until Ed Kazmirski's famous R/C Orion (oz927) came along, and by then, nobody wanted much stability anyhow - it interfered with the piloting of model aircrafl that were beginning to depend on electronics, not stability, to keep them in the air.

This picture is a repeat from our Feb 1974 issue, but the only one we could find of a Pacemaker. Built by John Haggart of England, the wing has beautiful form, as this photo proves."

Supplementary file notes

Planfile includes article.


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Pacemaker (oz2429) by JL Sadler 1974 - model pic

  • (oz2429)
    by JL Sadler
    from Model Builder
    April 1974 
    78in span
    IC F/F LowWing
    clean :)
    all formers complete :)
    got article :)
  • Submitted: 14/02/2012
    Filesize: 638KB
    Format: • PDFbitmap
    Credit*: theshadow
    Downloads: 1023

Pacemaker (oz2429) by JL Sadler 1974 - pic 003.jpg

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