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Nov 21, 2014, 12:31 PM
Thomas B.'s Avatar
Build Log

Jupiter Kwirl free download plan

Jupiter Kwirl is a depron autogyro with two counterrotating rotors on a central mast. Quick and easy to build, great fun to fly. Rudder elevator throttle control only, but it does loops and rolls and real wild manoeuvres, at the same time it is very docile and you can fly it almost anywhere. Credits to Al Foot for his great Twirl design!
Modell AVIATOR: Downloadplanmodell Jupiter Kwirl (1 min 44 sec)
Last edited by Thomas B.; Nov 22, 2014 at 05:41 AM.
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Nov 21, 2014, 12:32 PM
Thomas B.'s Avatar


Here is the download:
Last edited by Thomas B.; Jan 27, 2016 at 02:00 PM.
Nov 21, 2014, 12:58 PM
Thomas B.'s Avatar
There are some useful pictures in the video. You have to build two rotors, one clockwise and one counterrotating. The blades are 3mm depron with long skewers as leading edge. Here are some pics that show how to create the negative pitch and the rotor dihedral, which is important for the Kwirl`s flying characteristics.
Nov 21, 2014, 07:46 PM
Tony Audsley Retired Locksmith
Lockey's Avatar
Thomas has asked me to post pics of my build and the patterns I did for the model

The patterns are simply 4 x A4 sheets to print, you will need to glue a couple of parts together

Sheet 1. Glue the two stabilizer parts together before cutting out of Depron
Sheet 2 and 3. Glue the parts X .. Y .. and Z together before cutting out of Depron

Thanks for a great little model Thomas

Last edited by Lockey; Nov 21, 2014 at 07:56 PM.
Nov 22, 2014, 01:47 AM
Registered User
Tomas Dunker's Avatar
Thanks Lockey for patterns, helped me a lot!
Last edited by Tomas Dunker; Nov 22, 2014 at 01:55 AM.
Nov 22, 2014, 01:54 AM
Thomas B.'s Avatar
Originally Posted by Tomas Dunker
In the plan:: What does the dotted line on the horizontal stabilizer means?
It is just a centre line to help adjusting the Stabilizer and fin when putting together.
Nov 22, 2014, 01:25 PM
Thomas B.'s Avatar
Motivational Video:
Jupiter Kwirl Downloadplan Modell-Aviator 01/2015 (3 min 12 sec)
Nov 22, 2014, 02:17 PM
Old RC Guy Having Fun!
Aeronut41's Avatar
Thomas, Great video. What camera did you use for the on board shot? Aero
Nov 22, 2014, 02:44 PM
Thomas B.'s Avatar
It was a keycam # 11 as far as I know. It was not mine.
Nov 22, 2014, 04:22 PM
Old RC Guy Having Fun!
Aeronut41's Avatar
Thanks!Neat viewpoint Aero
Nov 22, 2014, 07:37 PM
Registered User
britinoz's Avatar
Thomas asked me to show some of the pic's of my model. I think its a bit rough and ready compared to Tony's neat construction method . Now I did not follow Thomas's construction method as I only had enough depron for the blades and tail feathers so I just used light styro foam as a profile fuz....not as nice looking ,but flies OK.
Happy Landings
Nov 23, 2014, 01:39 AM
Allways the hard way!
georgy's Avatar
What is the actual angle of rotor dihideral? Been searching for 3mm depron with out luck. May have to try alternative material...

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