Shoulderstrap (oz8558)
About this Plan
Shoulderstrap. Radio control sport model.
Quote: "Functional shoulder-wing sportster for single channel RC and 0.8 - 1.5cc engines.
SHOULDERSTRAP was born out of frustration, mainly frustration with the then accepted normal layout in single channel models. I say 'then' because Shouiderstrap was built in 1964, but due to many things (I was 'chicken') it was not until 1967 that I discovered just how well she flew, much to my surprise I might add! She was my second single channel design, the first, Shoestring, being a sort of scaled down Uproar (oz2220) at 40 in span. However, this model, good flyer as it was, did not look very appealing so Shoulderstrap was built, a neater model, smaller, but a bit more economical on materials.
For her size, she's a bit heavy but on a 1.5 cc motor is not too hairy for a beginner though she doesn't like to glide down wind - tail first that is! Performance is not lacking as the prototype showed one Sunday last Autumn. I had a jumper lead in the flat power supply go open-circuit due to vibration (there's an obvious moral there!) this happening at 200 feet overhead. instant no control! On a 5-6 minute engine run she went OOS and was found 7 miles away - all this at an AUW of 29 oz! There is plenty of room for most s/c equipment in the fuselage which is a good thing as I'm a messy installer!
The structure of this model is almost conventional. I use hardwood spars and plywood doublers for two reasons. Firstly, strength. secondly, warp resistance. The prototype spent three rainy days outside and I stood the wing and fuselage in the airing cupboard to dry out and they didn't warp! It's harder to bend spruce than balsa, also paper covering is entirely adequate making for a cheaper model. The use of elevators is for trim purposes alone, more about those later..."
Shoulderstrap, RCM&E, July 1968
Direct submission to Outerzone.
Supplementary file notes
Article pages, thanks to RFJ.
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(oz8558)
Shoulderstrap
by PR Williams
from RCME
July 1968
37in span
IC R/C
clean :)
all formers complete :)
got article :) -
Submitted: 23/03/2017
Filesize: 447KB
Format: • PDFbitmap
Credit*: Circlip
Downloads: 634
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- Shoulderstrap (oz8558)
- Plan File Filesize: 447KB Filename: Shoulderstrap_37in_oz8558.pdf
- Supplement Filesize: 1081KB Filename: Shoulderstrap_37in_oz8558_article.pdf
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Notes
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Scaling
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