Arrow (oz696)

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Arrow (oz696) by Bill Gibson 1992 - plan thumbnail

About this Plan

Arrow. 1940 class B pylon model, designed by Bill Gibson.

The Arrow (oz14085) first appeared in Air Trails, Dec 1940. This here is a later redrawn plan from Model Builder in 1992.

Quote: "The Arrow is a Class A/B pylon gas model out of the Goldberg Zipper (oz387) Design School. Bill Gibson, in his December, 1940, Air Trails Construction article, readily admitted that, like many planes, it was not a completely original design. A glance at the drawing reveals its Zipper-like lines, but a closer look brings out modifications and improvements that may not have resulted in better preformance, but certainly simplified construction and equipment accessibility.

Perhaps you could say these improvements allowed the builder to spend more time on trimming and adjusting, thus increasing flight times. It certainly seemed to pay off for Gibson, who won Class A at the 1940 Nats with a remarkable 47-1/2 minute flight that also set a new national record for the class.

The two most noticeable mods in the Arrow from the Zipper are the removeable pylon which gives access to the ignition components and the wing spars which are flush with the bottom of the ribs..."

Update 20/08/2012: Added a clearer version of this plan, courtesy of theshadow.

Note model pic (found by RFJ) is from Aeromodeller, shows model by Jack Simmons.

Supplementary file notes

Planfile includes article.

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Arrow (oz696) by Bill Gibson 1992 - model pic

Datafile:

Arrow (oz696) by Bill Gibson 1992 - pic 003.jpg
003.jpg
Arrow (oz696) by Bill Gibson 1992 - pic 004.jpg
004.jpg

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User comments

Surprised to see myself. Jack Simmons, Constellation Model Flying Club South Australia. I expect the late Don Howie supplied the photo.
I built two electric Arrows some ten years ago. One floated away never seen again, the other still flying in 2021. Great flyer it just likes to hang up there. Recommended.
Jack Simmons - 04/03/2021
I like this model so much that I am now building a 1.5mt wingspan version. If only some one would redo the drawing. I spent a lot of time scaling it up.
Jack - 22/08/2022
Hi Jack, the first thing I would try would be to go to the corner printshop and specify a 130% scale factor, This would leave you with a 1.5m plan.
Miguel - 22/08/2022
Yes, the plan can be scaled up. So do the thickness of the lines and hand drawn notes. I drew up the critical dimensions on the back of an old drawing and am building from there. It is such a lovely flier that a CAD drawing would be great. My first model vanished in a thermal, the second just seems to float, nearly lost it in a thermal but it was found in a patch of broccoli.
Jack Simmons - 23/08/2022
My first Arrow [pic 004]. Shows the wing structure. Oz 696 photo [main pic] was my second one.
Jack Simmons - 23/08/2022
Very fine looking, Jack! Don't worry too much about expanded line thicknesses, I don't think they'll bother you too much during construction. I agree it would be best to have a proper dwg but at present "my cup runneth over" :)
Miguel - 24/08/2022
Just finished a 1.5mt electric version. I have covered it with transparent film, yellow and modena (sort of mauve). Looks a bit gaudy, won't do that again It came out tail heavy and needed a lot of lead to balance it.
I stuck mostly to the drawing except for the pylon.
Test flight when it stops raining and the wind drops.
Jack Simmons - 21/09/2022
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