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
This plan is available for download in CAD format.
Did we get something wrong with these details about this plan (especially the datafile)?
That happens sometimes. You can help us fix it.
Add a correction
Do you have a photo you'd like to submit for this page? Then email email@example.com
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
Add a comment
- 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
- help with downloads
* Credit field
The Credit field in the Outerzone database is designed to recognise and credit the hard work done in scanning and digitally cleaning these vintage and old timer model aircraft plans to get them into a usable format. Currently, it is also used to credit people simply for uploading the plan to a forum on the internet. Which is not quite the same thing. This will change soon. Probably.
This model plan (like all plans on Outerzone) is supposedly scaled correctly and supposedly will print out nicely at the right size. But that doesn't always happen. If you are about to start building a model plane using this free plan, you are strongly advised to check the scaling very, very carefully before cutting any balsa wood.
© Outerzone, 2011-2020.
All content is free to download for personal use.
For non-personal use and/or publication: plans, photos, excerpts, links etc may be used, provided that full and clear credit is given to Outerzone with appropriate and specific direction to the original content i.e. a direct hyperlink back to the Outerzone source page.
Unauthorized use and/or duplication of this material without express and written permission from this site's owner is strictly prohibited. If we discover that content is being stolen, we will consider filing a formal DMCA notice.