Witch II (oz2372)

About this Plan

Frog Witch II. Free flight rubber model. 153 sq in area.

Direct submission to Outerzone.

Planfile includes full build instructions.

Quote: "FROG Witch II - High Performance Rubber Model.

The Witch II is a redesigned and improved version of the original model, being simpler, lighter in weight, and possessing a better performance.

The kit incorporates the same outstanding features as previously, having all the parts cut to shape and numbered to correspond with the drawing, shaped undercarriage, moulded balsa airscrew blades. plastic wheels, strip rubber, etc.

The main components can be built over the plan. Before commencing, pin this to a flat board, and cover it with a sheet of tracing or greaseproof paper to prevent the cement sticking to it.

The cut parts only require easing from the panels with the help of a razor blade, to cut the retaining sections.

Dope and cement are not included in this kit, but can be obtained at any model shop. Use quick-drying Balsa Cement, such as Frog Universal, for the best results.

BUILDING INSTRUCTIONS.

FUSELAGE: The Balsa Strips are supplied in knife-cut panel form, and only require separating with a razor-blade. Remove any rough edges with sandpaper. First put aside 9 strips of 1/8 in square for the longerons and spars, before cutting the short pieces.

Make up the bulkheads first, over the diagrams in Fig 1. Two large ones and one small one are required.

While these are setting, build the fuselage sides over the plan, using pins to hold the parts in place, as shown in Fig 2. Make two sides together. one on top of the other, with strips of grease-proof paper to separate the glued joints. Note that parts 2, 3, and 4 (sheet 1) are flush with the outer surfaces, so lay pieces of 1/16 in packing between the two sides at these points. (If the sides are built separately, the starboard side can be laid flat on the board, but parts 2, 3, and 4 on the port side require raising to the top surface). The longerons are built up from 2 strips jointed together with an extra strip to cover the joint, as indicated on the drawing.

When the sides are set, remove them from the plan, and assemble them together with the bulkheads A and B, as in Fig 3. Check it over the Plan View to ensure that they are square.

Cement strips to the front bulkhead 5 (keep the inner piece to fix to the noseblock ), and cement it to the front of the fuselage, using elastic bands to keep the longerons in place. Then fix the bulkhead C into'place, and cement the rear ends of the fuselage together. Check for-straightness by sightingaiong it from each end.

Next cut the cross struts 6 to length, and cemet them in place where shown on the Plan and Side Views. Note the petition of the front ones, to allow for the centre stringers on top and bottom. Cut these front stringers 7 from 1/8 in square strips and cement them into place. Add the small gussets 8 behind the bulkhead 5, bevelling the edges to make them a good fit. Cement the tail piece 9 level with the top of the fuselage..."

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