ABC Robin (oz954)

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ABC Robin (oz954) by F. Saunders 1952 - plan thumbnail

About this Plan

ABC Robin. Scale model for single channel RC, with ED 3.46 diesel engine.

Quote: "THE ABC Robin built by ABC Motors around about 1929-30, was a midget single-seater cabin monoplane of just over 25 ft span, and was powered by an ABC 35 hp Scorpion horizontally opposed twin motor.

The construction is very simple and should not prove difficult. It has a simple slab-sided fuselage built up with 3/16 sq spruce or birch longerons with 3/16 sq hard balsa uprights and cross-members, etc. It was found necessary to steam the longerons to obtain the curve from the bottom of the cabin to the nose.

The original flew straight off the board with no additional trim necessary. The glide is quite flat, and under power the model is fast and very responsive to control. It has been found that very little rudder movement is needed for formal flight.

First build the side-frames on the drawing, making sure that all gussets, etc. are fitted, then remove the two sides from the drawing and fit the cross-pieces, starting at the cabin, and working back to the tail and then forward to the nose. (Remember that the top cross-member at the rear of the cabin is 3-ply and extends downward to the centre longeron.)

After building the basic framework, undercarriage and wing strut tubes should be added, followed by the hooks for the receiver, battery box and all wiring. The 1/16 sheet on one side of the cabin should be added at this stage so that the switches, etc. can be fitted. Finally fit the motor bulkhead and the motor, followed by the nose formers, and last by 1/16 sheet covering.

Wings. The wings are quite simple and there should not be any difficulty here. The spars are of 3/16 sq spruce and the ribs of 1/8 balsa, with hard balsa leading and trailing edges. The tubes for the wing struts should be bound with wire to the spars and soldered, as are the wing retaining hooks..."

Update 04/07/2016: article page added, thanks to RFJ.

Supplementary file notes

Article page.

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ABC Robin (oz954) by F. Saunders 1952 - model pic

Datafile:

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

    ScaleType: This (oz954) 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/ABC_Robin
    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.

ABC Robin (oz954) by F. Saunders 1952 - pic 003.jpg
003.jpg
ABC Robin (oz954) by F. Saunders 1952 - pic 004.jpg
004.jpg
ABC Robin (oz954) by F. Saunders 1952 - pic 005.jpg
005.jpg

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User comments

Photos of his completed model ABC Robin [pics 004,005], are thanks to MichaelB.
SteveWMD - 06/04/2020
Is there a build thread based of this plan set I have been looking and looking but have not found anything. Such a cool plane wish it had more documention.
Tjanuary - 19/01/2021
Try googling rcgroups abc robin. That finds https://www.rcgroups.com/forums/showthread.php?2694337
SteveWMD - 19/01/2021
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Scaling

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