Cutlass (oz13126)

 

Cutlass (oz13126) by John Berryman 1958 - plan thumbnail

About this Plan

Cutlass. Control line sport scale model.

Quote: "For sport flying on Half-A engines, a refreshing experience in table-top construction. Cutlass, by John Berryman.

The radical planforms of many recent fighters make them hard subjects for flying scale. Here's a Half-A propeller version of the unorthodox Chance-Vought Cutlass Navy fighter that's as sharp as its name. This near-scale beauty is outstandingly stable and delightfully easy to fly.

Changes from scale have been made to keep weight down: Wing location has been moved aft a trifle; the round fuselage has been rendered as a smooth six-sider; the jet intakes have been omitted for weight reasons (but you may easily add them if you wish); and the after-burner is made optional.

The full-scale Cutlass, powered by twin jets, has engine weight concentrated toward the rear. To get proper balance for our near-scale prop version, we located the engine aft, in pusher position. This makes the Cox Thermal Hopper .049 convenient to use. The reed-valve Cox engines run equally well in either clockwise or counter-clockwise rotation without special parts. This lets you use your Cox as a pusher without carving special props.

A number of other manufacturers will sell you special crankshafts for left-hand operation of their Half-A shaft-valve engines, notably Allyn, At-wood, Holland and K & B. Left-hand shafts cannot be secured for OK engines, the manufacturer informs us.

The Cutlass is a flying wing and as such is extremely clean and efficient. The plans here are for an all-balsa job of 150 square inches, which may seem like a lot of sail for Half-A. Your sharp Cutlass will check in at a husky nine ounces. The surprising power of your Cox .049, however, will give you all the speed you want on 40-foot Orlon lines, and your sharp Cutlass has enough sail for loops and wingovers.

To keep within the nine-ounce weight allowance, though, you'll have to use care in selecting your balsa stock. Working with laboratory scales, we've found that 50% differences in weight are not at all uncommon..."

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Cutlass (oz13126) by John Berryman 1958 - model pic

Datafile:
  • (oz13126)
    Cutlass
    by John Berryman
    from Model Airplane News
    October 1958 
    24in span
    Scale IC C/L Pusher Military Fighter
    clean :)
    all formers complete :)
    got article :)
  • Submitted: 11/06/2021
    Filesize: 553KB
    Format: • PDFbitmap
    Credit*: theshadow
    Downloads: 455

ScaleType:
  • Vought_F7U_Cutlass | help
    see Wikipedia | search Outerzone
    ------------
    Test link:
    search RCLibrary 3views (opens in new window)


    ScaleType: This (oz13126) 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.


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    ScaleType is formed from the last part of the Wikipedia page address, which here is https://en.wikipedia.org/wiki/Vought_F7U_Cutlass
    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.

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* Credit field

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Scaling

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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