Sporty Forty


Sporty Forty - plan thumbnail image

Sporty Forty - completed model photo more pics (7)

Sporty Forty  
by Ken Willard
from RCMplans (ref:719)
March 1978 
40in span
Tags: IC R/C Biplane
all formers complete :)
got article :)

This plan was found online 20/06/2011 at:
Outerzone planID: oz1248 | Filesize: 824KB | Format: • PDFbitmap | Credit*: 50+AirYears, theshadow, Balsaworkbench


About this Plan

Sporty Forty- RC Sport Bipe for RC. Wingspan 40in, length 40in, engine .40 power.

Quote: - "How about that low aspect ratio? You don't see many biplanes like that do you? All I can say is - try it, you'll like it. The Sporty Forty has one of the most amazing speed ranges you'll ever see. You can throttle back and float along at about 20 miles an hour, or pour on the coal to it and zip along about 70. Caution - don't put too much throw into the elevators or the Ailerons. The short coupling makes it very responsive to control surface actions..."

Update 25/01/2015: Have rescaled this plan to correct full size at 40 in span, thanks to Rob.

Update 01/02/2015: Replaced this plan with a clearer copy, thanks to theshadow.

Update 18/03/2015: Replaced this plan with a clearer copy thanks to Balsaworkbench. Scanning by Don at EAC, cleanup by theshadow.

Supplementary files

Article pages, text and pics, thanks to hlsat. Also, previous scan.


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User comments

Hi Steve, Here are some pictures of the Sporty Forty [see more pics 004-008]. The first picture of the plane (with me aged 41) was taken in 1980. It lasted about 30 years, but became so oily that I decided to build a new one using the Outerzone drawing. Some weeks ago I finished that one. See the pictures made by my clubmate Kor. I added a navigation light to improve visibility and made a cabane construction of 3mm steel wire. The engine which I used on both models is a Merco 61 I bought in 1975. I own 9 of these good running engines. Hoping that these pictures are useful to your very nice website...
LambertOosting - 22/11/2014
Here is another foto of my Sporty Forty [more pics 009]. It is an extremely well performing model.
LambertOosting - 20/12/2016
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