Circle Whirly (oz9418)
About this Plan
Circle Whirly (Jumpin Giro). Round the pole autogyro model, for K&B Infant .020 power. From Air Trails Annual, 1958.
Quote: "Jurmpin' Giro is an ideal model for schoolyards, small parks and gyms. Any place where an 8 to 14-foot tether line can be accommodated is room enough to fly this RTP model. It is almost indestructible and it cannot stall. Four-bladed rotors provide over three-quarters of the lift, small stub wings are for lateral stability and model can be flown without these. The pylon around which the model flies should be from 30 to 36 inches high with a good strong base. The new Pee Wee or old Infant .020 takes this model up nicely; no larger engine should be used as the speed would be too great. Our Infant was shock rubber band mounted, which helps when you have to put in some more side or down thrust. The small stub wings plug in so you can experiment with different flight trims. A 5x3 wooden prop provided the thrust. This model is ideal for air pick-up tricks or other similar stunts. I would suggest a large tank to provide longer time in the air. Construction is very simple. Entire model is of medium grain 1/16 inch sheet balsa. Build the crutch, then cement two sides to it.."
Here's one more plan, Circle Whirly from Air Trail Model Annual 1958, this one comes to us from Roy Tiller over at the DBHL website. Enjoy, Ratracer
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(oz9418)
Circle Whirly
by Bob Tennenbaum
from Air Trails
December 1958
15in span
IC RTP
all formers complete :)
got article :) -
Submitted: 01/11/2017
Filesize: 367KB
Format: • PDFbitmap
Credit*: Ratracer
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- Circle Whirly (oz9418)
- Plan File Filesize: 367KB Filename: Circle_Whirly_1958_oz9418.pdf
- Supplement Filesize: 448KB Filename: Circle_Whirly_1958_oz9418_article.pdf
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Notes
* 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.
Scaling
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.
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