Doubler (oz15166)


Doubler (oz15166) by Brad Shepherd 1968 - plan thumbnail

About this Plan

SIG Doubler. Radio control quarter-midget racer model. Wingspan 38 in, wing area 340 sq in. For 09 - 10 engines.

Direct submission to Outerzone.

Quote (from ad): "The Versatile SIG Doubler. Simple construction. Fast building. Easy to control. Wingspan 38 in. For 3 or 4 Channel Equipment. Designed by Brad Shepherd.

Sport, Aerobatic and Racing Model. 3 Times 1/4 Midget Racing World Champion in 1969, 1970, 1973 - Plus Many Other Racing Victories!

Flown by Austin Leftwich. Austin has this to say about his converted Doubler 'Little Gem': Because of my successes with the design, and also because it is so easy to build (and fly), there are eight other active competitors here in Atlanta who compete with them. Five of them are novices who wanted very much to compete in the event, but were unsuccessful in trying to master the race course with some of the strictly Quarter Midget design kits on the market. Every one of them has managed to compete successfully with his version of the 'Little Gem'. Featured in the March 1974, issue of MODEL BUILDER, a full-size plan of Leftwich's Doubler/ Little Gem Conversion (oz15171) is available from the magazine for $2.50. See their plan listing in this issue.

Value Packed Bargain At $14.95"


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Doubler (oz15166) by Brad Shepherd 1968 - model pic

  • (oz15166)
    by Brad Shepherd
    from SIG (ref:RC-14)
    38in span
    IC R/C Kit
    clean :)
    formers unchecked
  • Submitted: 27/02/2024
    Filesize: 570KB
    Format: • PDFbitmap
    Credit*: JJ
    Downloads: 414

Doubler (oz15166) by Brad Shepherd 1968 - pic 003.jpg
Doubler (oz15166) by Brad Shepherd 1968 - pic 004.jpg

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User comments

It appears the plans are for the first SIG Doubler but the picture is of a Doubler II.
Patrick - 13/03/2024
Good point. Can anyone send us in a good pic of the original Doubler? Thanks.
SteveWMD - 13/03/2024
Ah got it. Have added correct model pic now, shows original Doubler, thanks to JeffGreen. Also advert from May 1974 AAM.
SteveWMD - 14/03/2024
We also have the Little Gem conversion plan (as mentioned in the ad text) coming along in the next 2 days, too.
SteveWMD - 14/03/2024
The date of March 1974 is wrong, maybe confused with the date of the upcoming Lil Gem-1 conversion plan. Austin Leftwich himself states in the Lil Gem-3 article (Oz 3015) that he started using and modifying the Sig Doubler since 1970. The ad for the Doubler claims a 1969 World Championship. The Sig Barons Buggy (Oz10720), referenced as kit number RC-15 (1 higher than the Doubler's RC-14), has its date set as 1968, and appears correct as per explanation under that plan. So... it stands to reason that the Doubler kit should have been available to the public since at least 1968 also.
RC Yeager - 14/03/2024
I’ll buy that. Ok, setting the date to 1968.
SteveWMD - 14/03/2024
Now, we just need a Doubler II plan :-)
Patrick - 15/03/2024
Don't forget Lil Dublr (oz4919)
pit - 15/03/2024
And Super Doubler (oz4775), although it was never kitted (that I know of).
RC Yeager - 15/03/2024
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