About this Plan
Scorpion. Profile trainer for control line.
Quote: "With help of full size drawing on next two pages, you younger fellows can prove you can make your own 'ukie' trainer. The Scorpion, by PGF Chinn.
Every year, MAN gets thousands of new readers; thousands of newcomers to the hobby who know no more about it than any of us did when he first started to build model planes. In fact, the old-timers were in many ways better off; they started on the ground floor, learned as they went along. Nowadays, our beginner is greeted with a confusing array of dozens of different types of models, known under an almost bewildering number of different titles: free flight, controlline, radio control, gas-powered, rubber-powered, glider, jet, scale, Wakefield, Nordic, PAA-Load, Clipper Cargo, Jetex, etc, etc.
And so the Scorpion controlline trainer was designed especially to meet the requirernents of the inexperienced modeler who wants to try controlline flying. Scorpion is simple to build and goes together quickly. Scoropin is strong, but if you do damage any part of it, it is easy to repair. The plans are full size.
The model will take any beam mount motor from .049 cu in to .099 cu in displacement. The popular Cub range of motors is particularly well adapted to the model, including the .049-B and .049 Diesel, .074 and .075 models.
You shou'd have no difficulty in getting material for the model from your hobby dealer. To simplify construction, our plan specifies ready-made hardware for the U-control system. For this we chose a Berkeley C-7 bellcrank and elevator horn set. This set is primarily intended for speed models and, as such, it is a non-sensitive set-up, giving a small elevator movernent for a large handle moverment - just what the beginner needs for his first controlliner..."
Hi Steve - Here is P.G.F. Chinn's Scorpion from Model Airplane News magazine issue 10-55.
Direct submission to Outerzone.
Update 21/01/2019: Added PDFvector file and CAD zipfile (both dwg and dxf), thanks to MikeSierra67.
Supplementary file notes
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User commentsI've attached 3 photos of my recently completed Scorpion, built for my 11 year old son [more pics 003-005]. It uses a Norvel .049 and is a fun and resilient trainer. I modified it slightly by adding a cheek to reinforce the front end and wing joint.
ChrisBayliss - 22/05/2018
Hello oz hope you're all well! A few photos of my latest build [pics 007-009]. Peter Chinn's Scorpion. Powered by a DC Merlin. Keep healthy and best regards,
Tony Wright - 06/04/2020
Hi! Steve and Mary, I want to send you some pictures of my Scorpion (oz5973) taken one year ago [main pic, 010,011]. It was my first model after 35 years. The engine show in pictures is a Brodak 0.049. The model is still flying, but now, is powered by a COX 0.049 Tee Dee. Greetings,
Valeria367 - 09/04/2020
Hello Guys. Wish you are all doing well. I would like to know where is the C.G. location? I´m very new to controline.
Pablo B. - 14/06/2020
I've placed the CG at 10% of MAC, or 11.09mm from the leading edge at the root chord.
Valeria367 - 14/06/2020
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- Scorpion (oz5973)
- Plan File Filesize: 123KB Filename: Scorpion-MAN-10-55_oz5973.pdf
- Supplement Filesize: 874KB Filename: Scorpion-MAN-10-55_oz5973_article.pdf
- Supplement Filesize: 151KB Filename: Scorpion-MAN-10-55_oz5973_vector.pdf
- CAD Zip Filesize: 73KB Filename: Scorpion-MAN-10-55_oz5973_cad.zip
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