Gyration (oz14942)

 

Gyration (oz14942) by B Swindell 1976 - plan thumbnail

About this Plan

Gyration. Control line sport autogyro model for .19 to .25 engines.

Direct submission to Outerzone.

Update 22/11/2023: Added article, thanks to Pit.

Quote: "Just the tonic for jaded control-line fliers! An Autogyro to suit 0.19 - 0.25 engines, with a crowd pulling performance. Gyration, by Barry Swindles.

GYRATION was designed for use at displays given by the CL section of the Sudbury Model Flying Club, the original idea being to represent a helicopter gunship and attack on 'rebel forces' with suitable ground explosions set up by the Club's pyrotechnics expert. In the event, the model's flight performance alone turned out to be a real show-stopper, so there is no reason why it should not be finished to represent an air-sea rescue, oil rig supply, or any other type of helicopter that takes the builder's fancy.

Even if you don't fly in public displays, build one to entertain your fellow clubmen, or just for the fun of flying it. I must confess to leaving my trusty Crusader stunter languishing in the garage most Sunday mornings this summer whilst experimenting in getting Gyration into, and out of, the most incredible in-flight attitudes imaginable.

Construction is straightforward, but some basic metal working tools are necessary for making up the bellcrank assembly as drawn. Some builders may prefer to use other methods, but it is vital that the mechanism is light and free in operation as Gyration often flies with virtually no line tension at all!

The model is built around the engine bearer/main fuselage former assembly, and the bellcranks, throttle linkage and engine are all installed before the fuselage is built onto this main structure.

Commence by glueiug 1/8 x 3/8. balsa to the 3/8 sq Ramin engine bearers, and then assemble to former F2-F5 making sure everything is square - the rotor shaft should be bent to shape and attached with soft wire binding and epoxy resin to F4 beforee fixing to bearers. When thoroughly dry, the 1/8 ply bellcrank mounting plate is epoxied between the engine bearers in front of F4.

The bellcrank mechanism should now be made up and installed, it is based on one of the systems described by Mick Reeves in the November 1968 AeroModeller, and uses my adaptation of the pivot system described by Claus Maikis for his Commodore (oz3357) stunter in AeroModeller February 1973 (moral - you can always learn something from A/M's constructional articles, even if you don't build the model concerned).

The bellcranks are cut from 16 or 18 swg mild steel, drilled for leadouts and pushrods, but centre-popped only at the pivot point..."

Supplementary file notes

Article.

Corrections?

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

Gyration (oz14942) by B Swindell 1976 - model pic

Datafile:
  • (oz14942)
    Gyration
    by B Swindell
    from Aeromodeller (ref:CL-1272)
    January 1976 
    38in span
    IC C/L
    clean :)
    all formers complete :)
    got article :)
  • Submitted: 26/10/2023
    Filesize: 495KB
    Format: • PDFbitmap
    Credit*: theshadow
    Downloads: 290

Gyration (oz14942) by B Swindell 1976 - pic 003.jpg
003.jpg
Gyration (oz14942) by B Swindell 1976 - pic 004.jpg
004.jpg
Gyration (oz14942) by B Swindell 1976 - pic 005.jpg
005.jpg

Do you have a photo you'd like to submit for this page? Then email admin@outerzone.co.uk

User comments

No comments yet for this plan. Got something to say about this one?
Add a comment

 

 
 

Download File(s):
 

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.

 

Terms of Use

© Outerzone, 2011-2024.

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.