Piper Cub J-3 oz256


Piper Cub J-3 - plan thumbnail image

Piper Cub J-3 - completed model photo

This plan was found online 11/04/2011 at: http://www.rcgroups.com/forums/showthread.php?t=1265873&page=9
Outerzone planID: oz256 | Filesize: 930KB | Format: • PDFbitmap | Credit*: Planeman


About this Plan

Piper J-3 Cub. 70 in span RC scale model. Designed by Chuck Hollinger. Plan includes floats. Babcock radio installation shown. Weight 4.5lb.

Later kitted by Berkeley.

Quote: "With an unparalleled record of 132 successful flights, this R/C model is a fine tribute to designer and radio.

If you've had success with the usual array of boxy R/C designs you're ready to give the Cub a try. She's not only a cinch to build and fly, but a model that really looks like an airplane. While the only deviations from scale are the increased wing dihedral and stabilizer area, it has more than proven itself as the total number of actual logged flights to date is 132 (approx 9 hrs in the air). Best of all she looks nearly as unmarked as when first soloed.

Credit must be split two ways - the inherent stability of the Cub design, coupled with our fool-proof Babcock R/C equipment. Several of the features came about through Dick Schumacher's influence, namely, the fiberglass cowl and demountable, shock-absorbing landing gear. The wing panels with the scale number of ribs are hooked on by means of rubber bands; they've proven their worth on several occasions already. The motor is mounted on its side to carry through the scale lines, in addition to expelling the exhaust downward, resulting in an oil-free ship.

One feature that really astonishes the R/C flyers is the full-scale operating rudder - but believe me it works to perfection, giving excellent control under power and in the glide, without any signs of over-control. In fact, more than a dozen modelers who had never touched a beep button before have flown this Cub without any trouble whatsoever.

Of course, anyone who has put time in the real Cub will attest to its easy handling characteristics, the model inheriting her big sister's stability..."

Update 04/01/2017: Added article, thanks to Newtmagick.

Update 30/12/2018: Added floats article (from Feb 1955 AT), thanks to DPlumpe.

Supplementary files

Floats article.


Did we get something wrong with this plan? That happens sometimes. Help us make a correction


oz256 datafile

Piper Cub J-3  
by Chuck Hollinger
from Air Trails
January 1955 
70in span
Tags: Scale IC R/C Floatplane Cabin Civil
formers incomplete :(
got article :)



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User comments

This is not the Berkeley plan but the plan published in Air Trails Jan 1955, float on AT Feb 55 by Chuck Hollinger. Berkeley later kitted this plan (as for the PT19), but not all the parts are shown on the plan.
Pit - 03/01/2017
Thanks Pit, got it.
SteveWMD - 03/01/2017
This plan and article are very interesting because of the use of RC back in 1955. The only other one which I've come across in the outer zone about the very early use of RC is the Kirby Motor Tutor (oz2969).
GreggD - 29/12/2018
By 1955, RC models were not new. The 1937 US Nats had a contest for radio-controlled models. The 1949 British Nats had an RC aerobatic contest. For history on this see https://bmfa.org/Info/History-of-Model-Flying. For some pre-1955 RC plans on Oz, see Walt Good's 1940 Big Guff (oz7456), 1949 Rudder Bug (oz7009) etc, etc. Using the advanced search, there are currently 88 plans on Oz tagged as RC, dated 1955 or earlier.
SteveWMD - 30/12/2018
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