Great Lakes Trainer (oz9339)


Great Lakes Trainer (oz9339) by Alan Kingswood 1957 - plan thumbnail

About this Plan

Great Lakes Trainer. Control line scale model biplane trainer. For 2.5 - 3.5cc diesels.

Quote: "A neat control line biplane for 2.5 - .3.5 diesels. Great Lakes Trainer, by Alan Kingswood.

THE full size counterpart of this attractive model was produced by the Great Lakes Aircraft Corporation in considerable numbers in the early 1930s and in many versions. It was one of those designs - so few and far between - that could be 'mucked abaht wiv' and still fly - tribute to its sturdiness which is reflected in the model version presented here.

Commence by cutting out the fuselage sides from medium 1/8 in sheet balsa (cut both from one sheet if possible) then cut out the formers from the material specified. Drill bearers and bolt engine in place, slide on the ply formers and double cement or glue them in position. Bend the undercarriage from piano wire and bind and cement in place. Form cabane struts and bind to the respective formers but do not solder diagonal brace to cabane at this time. Cement fuselage sides to the bearer assembly, pull rear end of fuselage together and double cement. Cement remaining formers in place after cutting holes for push rod.

Bind and cement ply upper wing fixing braces into place on centre-section cabane struts. Install the fuel tank (a Mercury pressure tank was used on the original). For stunt work ensure that the centre lines of the tank and carburettor line up. Bolt bellcrank into position with pushrod in place. Lock by soldering nut in place or by using Simmonds or nylon nuts. Make sure when soldering that no flux gets on control plate pivot.

Cut out the tailplane and elevators connecting the latter with a piece of in. dowel, and sand to the section shown. Use your favourite method of hinging. Cement in position on fuselage and hook up elevator push-rod and horn. The lead-outs can now be added but make sure they are firmly fixed to the control plate. Cut out, sand and fit vertical fin and rudder, ensuring clearance for elevator yoke and fit rear decking spine. Bind tail skid to ply and firmly cement in place.

Build wings on plan - packing up leading edges and trailing edges. When dry remove from board and carve LE, TE and tips to shape. Note lower wings have leading and trailing edge stubs left at root. Cut out interplane struts from ply, slide into position in upper and lower wings and offer assembly up, without cementing, to fuselage.

Pin interplane struts temporarily into position as these give correct relationship of wings to each other. Ensure that wire cabane struts fit into top wing without springing it out of place. Remove wings and without moving cabane struts from position add diagonal braces. Check all fuselage interior fittings and cement side and top decking stringers in place. Plank top of the fuselage and cut out holes for cock-pits..."

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Great Lakes Trainer (oz9339) by Alan Kingswood 1957 - model pic

  • (oz9339)
    Great Lakes Trainer
    by Alan Kingswood
    from Model Aircraft (ref:259)
    June 1957 
    28in span
    Scale IC C/L Biplane Trainer
    clean :)
    all formers complete :)
    got article :)
  • Submitted: 16/10/2017
    Filesize: 715KB
    Format: • PDFbitmap
    Credit*: MikeJones
    Downloads: 721

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