Farman Sport (oz11920)
About this Plan
Farman Sport. Peanut scale rubber biplane model.
Quote: "The 1919 Farman Sport or 'David' was a French light biplane, seating two in tandem and typically propelled by a 60hp radial engine. A 1923 sample is on display at the Udver-Hazy Center in Chantilly, VA.
This plan is from a pencil drawing by Hurst Bowers. The paper plan I scanned was a copy of the plan published in August, 1977, MaxFax newsletter of the DC Maxecuters and had a 13.57 in span and 91.2 sq.in. wing area. This size conflicted with the 84 sq.in. area noted on the plan and was suspicously larger than the span limit for Peanut Scale, so I believe that copy was enlarged from the original and I have reduced the size to 13 in span and 83.2 sq.in. area.
I also include a 3-view of the Farman Sport drawn by Hurst Bowers and published in August, 1979, Model Aviation."
Direct submission to Outerzone.
Supplementary file notes
Three view drawing.
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ScaleType: This (oz11920) is a scale plan. Where possible we link scale plans to Wikipedia, using a text string called ScaleType.
If we got this right, you now have a couple of direct links (above) to 1. see the Wikipedia page, and 2. search Oz for more plans of this type. If we didn't, then see below.
ScaleType is formed from the last part of the Wikipedia page address, which here is https://en.wikipedia.org/wiki/Farman_Sport
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User commentsThe 3-view draughtsman appears to have used an alphabet stencil* to write each and every letter one after another. A painstaking process, or one heck of a bore hence the typo! The last time I used one must have been some 40 years, so I'm adding reference to a photo if you're younger than 60 at the very best :-)
Lovely plan too, she should be a fine flyer. Thanks to Mr Plumpe once again,
* see https://upload.wikimedia.org/wikipedia/commons/b/b6/Edit-format_rotring_hg.jpg
Miguel - 29/01/2020
A thought regarding the size discrepancies noted in the discussion of the plan.
I remember an alert that I believe appeared in Model Builder magazine, warning that some photocopiers actually stretched the long axis of the copy. This would result in a plan that inadvertently exceeded the 13 inch wingspan allowed in Peanut Scale.
According to the alert, this copying error was intended to deter counterfeiting. When vending machines were first adapted to accept dollar bills, they could be tricked by a copy of a bill. So copiers were required to create oversized copies. These would be rejected by the vending machine. This may be why a copy of a plan in a newsletter would turn out oversized.
Just a little tidbit, from a memory filled with obscure knowledge.
James Hickman - 01/02/2020
Sounds like an "urban legend." Copying machines have evolved from crude lens-based optics, to digital scanners,with better accuracy. Same errors crept in when using "projectors" to make model plan enlargements.
Dave D - 02/02/2020
I think copying/scanning produces errors, and always has done. But for myself I seriously doubt the errors are deliberate. I think they are just machines producing errors, no more.
SteveWMD - 02/02/2020
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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.
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