Auster AOP 9 (oz759)

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Auster AOP 9 (oz759) by Phil Smith - plan thumbnail

About this Plan

Auster AOP 9. Scale model for rubber power.

Update 10/2/2022: Added kit instructions, thanks to Andrew Darby.

Quote: "Study the plan carefully and identify all the parts on the printed sheets of balsa. Familiarize yourself with the sequence and method of construction. Cut out all the balsa parts, taking great care when cutting out the 1/16 notches in the formers. Cover the plan with waxed or greaseproof paper and pin both to a flat building board.

The fuselage is built by constructing two lower sides of 1/16 square balsa directly over the plan, these being then joined by two basic formers. This system of construction by inserting formers of a pre-determined width obviates the necessity for a fuselage top view and the alignment can be checked by sighting along the fuselage. Wings, centre-section and tailplane are similarly constructed over the plan on the flat.

FUSELAGE: Pin lower member F11 in place directly over the plan, then build up one complete side of 1/16 sq balsa as in diagram 1. Make neat joints, double-coating with cement, the first coat being allowed to dry into the wood before applying the second. Secure all struts in place with pins either side of the wood, never through it.

When quite set, remove from the board and build a second identical side, where possible using the same pin-holes to locate strips. The two sides, when complete, are joined together by two basic formers F7 and F8.

Chamfer inner face of sides at rear and pull together, joining with cement and securing with a clip or spring clothes peg. Insert cross struts, cut to lengths given on the plan, in the rear four bays. Score the top longerons and bottom members F11 at points marked X on side view of fuselage. See diagram 2. Fill scores with cement, pull in and join two sides of nose structure to nose former F4. Also add top nose formers F5, F6 and F13, checking the line-up and squareness of the fuselage at all stages.

Add top cabin members F9 and rear 1/16 sq struts down to fuselage. Trim rear edges of CS4 to slight angle to permit correct fit against F7. See diagram at top..."

Supplementary file notes

Instructions.

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Auster AOP 9 (oz759) by Phil Smith - model pic

Datafile:

ScaleType:
  • Auster_AOP.9 | help
    see Wikipedia | search Outerzone
    ------------
    Test link:
    search RCLibrary 3views (opens in new window)

    ScaleType: This (oz759) 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.

    Notes:
    ScaleType is formed from the last part of the Wikipedia page address, which here is https://en.wikipedia.org/wiki/Auster_AOP.9
    Wikipedia page addresses may well change over time.
    For more obscure types, there currently will be no Wiki page found. We tag these cases as ScaleType = NotFound. These will change over time.
    Corrections? Use the correction form to tell us the new/better ScaleType link we should be using. Thanks.

Auster AOP 9 (oz759) by Phil Smith - pic 003.jpg
003.jpg

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User comments

Colour photos of his completed model Auster AOP are thanks to AndrewDarby.
SteveWMD - 10/11/2012
How do you work out the dihedral angle?
Barry wilcox - 30/03/2020
Barry, the angle may not be too critical since all the plan says is to cant the root ribs a little bit. I checked other Veron plans and another design by the same designer and dihedral isn't specified.
However, the plan oz6913, Piper Vagabond, shows a guide to set the rib angle. And usually 6 degrees + or - per panel will be close enough. If it looks good it probably is.
Bill Hibbets - 30/03/2020
Dihedral is 1 inch under each wingtip per the instruction sheet (newly added supplemental file)
D A - 10/02/2022
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Scaling

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