About this Plan
The Loafer. Free flight powered glider for Baby Spitfire .049 motor. Pusher power pod design. This is not a full size plan. June 1949 MAN. Plan is complete, but construction involves working out your own wing ribs between the 2 given drawn examples, at the root and tip.
Quote: "WITH the appearance of the Baby Spitfire, a dream ship that was designed eight years ago was brought to completion, and there are many other designs that will be able to live now. The design shown here was laid away originally for the reason that transportation of a ship of the required giant size would be out of this world. Back then the only engine was the Brown Jr, which at that time was a 'hot 60'. How times have changed!
With the Baby Spitfire mounted on its side, and a dummy cylinder built up over a discarded lipstick container that serves as the fuel tank, scale appearance was achieved. The single landing wheel can be employed if you want; however it can be left off, if only hand launching is to be used. By use of dye instead of colored dope the weight of your model can be cut down. Trimming was done with Trim Film, a new easy out for the modeler who wants his plane to look like a model should, and not as though it had been finished in the dark. Since glow fuel is to be used, the entire motor nacelle and the center section of the wing were coated with hot fuel proofer. Light weight was essential so Comet fuel proofer was employed. Later, while flying the model, fuel was accidentally spilled on various other parts of the ship and promptly dissolved the dope thereon. We strongly advise fuel-proof-ing the entire job; little weight will be added, and the protection is really worth it. By choice of the right grades of wood, the weight of the model was kept to 4 oz.
Start construction with the wing. Cut out the ribs and assemble the wing in four sections, then join with gussets. Leave out the two center ribs until later. Cut the pylon and cement it in place along with the firewall. Then add the side blocks and shape as shown on the plan. Carve the cowl to fit around the engine and cut down a small apinner to match.
The three bladed prop has been found satisfactory; however the extra work of making this can be eliminated by cutting the tips off a larger prop. Mounted as a pusher, you will need a pusher type prop, since rotary valve engines cannot be reversed. If you don't want to bother with carving a special prop, a metal prop will be found convenient, as you can simply bend the blades so they will 'push' properly.
While speaking of the engine we should mention that the dummy cylinder was used as a fuel tank mainly because we were too lazy to hollow out the nacelle and cut through the firewall to allow use of the standard Spitfire tank. The rubber tubing between our new tank and the engine looks rather like a manifold and thus enhances the scale effect.
The stabilizer is made in the same manner as the wing. Sandwich a rudder between the two center ribs - this will give a firm job. The fuselage proper is now cut to shape and if the wheel is to be used, cut out the wheel well and fasten the axle in place; be sure to cement well. Slip on the wheel and add a drop of solder to hold the wheel in place.
The two pod sides can now be cemented in place and carved to shape. Fasten on the wing and stabilizer supports; it is important to have these strong, since if the wing can shift alignment, successive flights will never be the same..."
Update 13/01/2019: Added article, thanks to RFJ.
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User commentsI think you can consider this plan has having complete fuselage formers. If you look closely, it is a built up solid balsa fuselage, with a typical profile. One simply takes the 1/4" balsa fuse, slaps the sheet fuselage pod pieces on, sands the whole thing to that profile.
okithumper - 05/09/2012
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