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
Direct submission to Outerzone.
Supplementary file notes
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 firstname.lastname@example.org
User commentsNo comments yet for this plan. Got something to say about this one?
Add a comment
* 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, 2011-2021.
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.