Ladybird Special (oz340)

 

Ladybird Special (oz340) by HJ Pridmore 1950 - plan thumbnail

About this Plan

Ladybird Special. Free flight sport biplane model, for ED Bee 1 cc engine.

Quote: "Ladybird Special Power Biplane. By H.J. Pridmore.

Description. This is a development of the designer's popular Ladybird (oz2132) rubber-driven biplane which appeared in Aeromodeller, April 1948. The alternative wing-folding arrangement may be found very useful by builders who suffer from the usual transport troubles of these days. This is described in lower right hand corner of plan.

The completed model should balance about 3 in behind the leading edge of the upper wing. If CG position is incorrect the undercarriage wheels may be moved fore or aft to trim, by unsoldering the joint between the front and rear struts, finding the correct CG position, and re-soldering.

Construction. Any reasonably experienced modeller should find Ladybird easy enough to build - but, as with all free flight models, care and accuracy will pay dividends. Fuselage is not so tricky to cover as might be expected. One piece of tissue will suffice for each side, and if flour paste is applied to all the stringers the tissue easily conforms to fuselage contour. Original colour scheme was red fuselage and fins, white wings and tailplane.

Performance. Powered with an ED Bee, Ladybird Special has a performance equal if not better than a well-trimmed pylon contest model; On its sixth test flight the original flew OOS after six minutes from a 25-second engine run. In more than a season's flying it never sustained a prang..."

From 1950 Aeromodeller Annual.

Update 20/05/2018: Added article thanks to Mary at https://rclibrary.co.uk/title_details.asp?ID=1008

Supplementary file notes

Article.

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Ladybird Special (oz340) by HJ Pridmore 1950 - model pic

Datafile:

Ladybird Special (oz340) by HJ Pridmore 1950 - pic 003.jpg
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Ladybird Special (oz340) by HJ Pridmore 1950 - pic 004.jpg
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Ladybird Special (oz340) by HJ Pridmore 1950 - pic 006.jpg
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Ladybird Special (oz340) by HJ Pridmore 1950 - pic 007.jpg
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Ladybird Special (oz340) by HJ Pridmore 1950 - pic 008.jpg
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Ladybird Special (oz340) by HJ Pridmore 1950 - pic 009.jpg
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Ladybird Special (oz340) by HJ Pridmore 1950 - pic 010.jpg
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Ladybird Special (oz340) by HJ Pridmore 1950 - pic 011.jpg
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Ladybird Special (oz340) by HJ Pridmore 1950 - pic 012.jpg
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User comments

Plan is from 1950 Aeromodeller Annual.
SteveWMD - 20/05/2018
Thanks, got it.
SteveWMD - 20/05/2018
Added colour model photo [pic 003] from R/C Model Flyer, July 2001.
SteveWMD - 23/02/2020
Photos of Ladybird Special. This is 60% size, for CO2 power [main pic, 007-009].
Mike Mulholland - 05/05/2022
Hi from Australia. Recently completed my Ladybird Special. Here are some photos [010-012] you may like to add to the plan page. Thanks,
Bruce Jacques - 28/06/2022
Hi Bruce, what diesel is that on your Ladybird, how does it fly? Also what is that interesting picture in the background? Cheers,
Jim - 03/12/2022
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