Rearwin Speedster (oz5455)

 

Rearwin Speedster  (oz5455) by Walt Mooney from Model Airplane News 1955 - plan thumbnail

About this Plan

Rearwin Speedster. Free flight scale model, for .049 power.

Note this is a Free Flight design. For RC (and CL) version of this same design, see the later Jetco kit version Rearwin Speedster (oz4805) which shows both CL and R/C installation.

Quote: "Even had a modeler designed the real plane, it could not have been a better subject for a flying scale miniature. Perfect design, looks, sound structure, make this ideal for .049's. The Rearwin Speedster, by Walt Mooney.

The Rearwin Speedster, an outstanding airplane of its day, had a top speed of 150 mph and a climb of 1,200 ft per minute, using a 125 hp Menasco engine. It was two-place tandem and, with 50 lb of baggage, had a range of 550 miles.

It has always been an effective flying model. One of the most beautiful rubber-powered flying scale models in Nationals history was a Speedster flown before the war by Ed Naudzius. Being a tandem, the fuselage does not become too wide when scaled up to still larger sizes. It would make an ideal flying scale radio control plane.

The model is exact scale except for enlargement of the horizontal tail and increased dihedral. The basic fuselage structure utilizes longerons, uprights and cross-pieces. The right side is indicated in phantom on the plans. Until final assembly, the upper longeron remains in the door area. Add the aft cabin bulkhead and former and all the cross-pieces. Then build the cabin in place, using 1/8 sheet for cabin ribs. One-eighth diameter hardwood dowel is used for forward cross-member and windshield diagonals. Build the door to fit in the right side and remove upper longeron from the door area. Hinge the door on its forward side. All stringers are 1/8 square balsa.

The motor mount is a plywood box open on the bottom. For extra strength, use liXTeldwood glue to assemble and attach it to firewall.

The wing is conventional. The root locating dowels and attachment hooks are wrapped with thread and cemented to the spars, using filler blocks on the spars for proper locating. Sew the strut mounting tubes in place.

However, the structure is strong enough for silk covering, which is much more resistant to tearing when the model hits a bush. Whatever you choose to cover the Rearwin, be sure the frame is well sanded to remove all irregularities. After covering and water-shrinking, the original model was given three coats of clear dope to seal the paper. It rakes more coats to seal silk covering. Then an all-over coat of silver was sprayed on all the tissue parts. This can be quite thin and opaques the covering so fewer color coats are required. Then, in the area of the numbers and trim, the model was sprayed with two coats of cream dope. After drying 24 hours, the numbers and striping are masked off and three coats of red dope sprayed on the model. Since the original model was Diesel-powered, nitrate dope was used. Caution! if you are using a glowplug engine, use hot fuelproof dope.

Before covering, ail the wood planked areas, wheel pants, strut fairing, cowl and landing gear fillets, etc, are filled with several coats of wood filler (a mixrure of talcum powder and dope) and sanded until no grain shows..."

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Rearwin Speedster  (oz5455) by Walt Mooney from Model Airplane News 1955 - model pic

Datafile:
  • (oz5455)
    Rearwin Speedster
    by Walt Mooney
    from Model Airplane News
    March 1955 
    38in span
    Scale IC F/F Cabin Civil
    all formers complete :)
    got article :)
  • Submitted: 01/04/2014
    Filesize: 424KB
    Format: • PDFbitmap
    Credit*: JJ

ScaleType:
  • Rearwin_Speedster | help
    see Wikipedia | search Outerzone


    ScaleType: This (oz5455) 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/Rearwin_Speedster
    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.

Rearwin Speedster  (oz5455) by Walt Mooney from Model Airplane News 1955 - pic 003.jpg
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Rearwin Speedster  (oz5455) by Walt Mooney from Model Airplane News 1955 - pic 004.jpg
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Rearwin Speedster  (oz5455) by Walt Mooney from Model Airplane News 1955 - pic 005.jpg
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  • Plan File Filesize: 424KB Filename: Rearwin_Speedster_Mooney_oz5455.pdf
  • Supplement Filesize: 484KB Filename: Rearwin_Speedster_Mooney_oz5455_article.pdf
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Notes

* Credit field

The Credit field in the Outerzone database is designed to recognise and credit the hard work done in scanning and digitally cleaning these vintage and old timer model aircraft plans to get them into a usable format. Currently, it is also used to credit people simply for uploading the plan to a forum on the internet. Which is not quite the same thing. This will change soon. Probably.

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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