Puss Moth (oz11116)

 

Puss Moth - plan thumbnail image

About this Plan

Puss Moth. Rubber scale model.

Quote: "DESIGNED AND BUILT BY JM GREENLAND THIS model is of the Puss Moth used by the Royal Air Force Flying Club at Hatfield before the war, and the full-size machine is depicted on our front cover this month by C Rupert Moore. It carries the club's crest and rudder stripes and is built to the scale of 5/6 to one foot giving a wing span of 30 inches and flies with a scale tailplane.

Fuselage. Build in the usual way with 1/8 square longerons and spacers. The top and bottom stringers are raised on blocks of balsa to the various depths shown on the plan. The window frames are of 'T' section 1/32 sheet balsa, the celluloid being fitted on the inside, a separate piece being used for each panel. The undercarrriage is mounted in brass tubing cemented firmly into the fuselage, the front legs are tensioned by two elastic bands tied round the bottom longerons.

Wings. These are of straightforward construction. Pin the main spars to the plan and slot on the 1/16 sheet ribs, then add the leading and trailing edges and birch tips. The solid balsa fairing at the wing root is tapered to a point where it touches the cabin roof. Half of a press stud is soldered to a strip of tin which is pushed through the fairing and first rib, and then bent back and soldered. The struts must be carefully adjusted to give the correct amount of dihedral and sweep back as shown on the plan.

Tail Unit. A symmetrical section is used, all ribs are cut from 1/16 sheet balsa. The ribs are fixed to the main spar and then the outline is added. The fin is cemented to the centre line of the tailplane and the whole unit is held to the fuselage by a rubber band.

Cover the whole model with jap tissue and spray aluminium all over. The lettering is in black and the RAF Flying Club crest is deep red with pale blue and dark blue.

Flying. 1/4 oz lead was put in the tail of the original model to get the CG in the correct place. The glide is very flat and fast and the model flies in a nose-down attitude, like the real machine. The average duration on 300 turns is 20 seconds. "

Puss Moth, Aeromodeller, February 1947.

Direct submission to Outerzone.

Supplementary file notes

Article pages, thanks to RFJ.

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Puss Moth - completed model photo

Datafile:

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Notes

* 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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