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Old Jan 29, 2010, 10:19 PM
I love my ID.
Fairfax VA
Joined Aug 2004
670 Posts
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Mrs Lil micro version of 1942 free flight model.

Mrs Lil (2 min 55 sec)


Original 1942 design by John Worth.
Micro RC adaptation by John Worth and Jinwoo Choe.
Pilot / Builder: Jinwoo Choe
Camera: Paul Stamison

15" wingspan 7.4gram
RX: 2ch Plantraco Butterfly Receiver
Actuator: Plantraco Mini actuator
Power System: Plantraco GB05 4mm motor gear box with cut down parkzone cessna propeller

The control system with thread is John's idea. I just adapted the idea with Plantraco Mini actuator. Centering magnet is mounted on rudder not on the actuator. I think ailerons can be rigged effectively with this system.

Rudders on wingtips are designed to produce drag which slows down one side of wing and make the airframe turn.

Plan will be included in www.cloud9rc.com February 2010 issue.
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Old Jan 29, 2010, 10:34 PM
Storm Runner guy
Slider2732's Avatar
USA, OK, Muskogee
Joined Nov 2008
3,581 Posts
Well built !
Summer saw me attempt some of the fold out gliders of similar shape. A mechanism (rubber band etc) in the middle pushes the two halves out at the top of the launch and it glides around...they look very similar to Mrs Lil.

Your model is a really nice looker (Mrs Lil is a nice looker lol) and how exciting for you to have worked with the original designer from all those years ago !

Do you have two tiny magnets on the rudders ? so that they attract and center ?
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Old Jan 29, 2010, 10:57 PM
I love my ID.
Fairfax VA
Joined Aug 2004
670 Posts
A disc magnet is placed on opposite side of O bend. Adjusting distance between magnet and O bend control the centering force.
This way I get more control throw on actuator and reduce slack on the thread.
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Old Jan 29, 2010, 11:02 PM
Storm Runner guy
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USA, OK, Muskogee
Joined Nov 2008
3,581 Posts
Ah, thank you for the explanation
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