Horus (oz3766)

About this Plan

Horus. Rubber sport biplane model.

Quote: "This neat little 19 in span biplane weighs but 1-1/4 ounces and has a certified average duration of 45 secs, in evening air. It is quite simple to build and has a particularly pleasing appearance, as can be seen from the photographs. The rigging position advised, ie lower wing at a small negative angle of incidence, coupled with the large tailplane should make the model practically stallproof and thus easy to fly. With its light icing loading it should also prove a frequent 'thermal catcher.'

IN introducing the Horus to readers I feel that it is rather to be regretted that the biplane type of model has not been more widely adopted, as my experience with this type of model shows definitely that a good performance can be obtained, while from the standpoint of appearance a well proportioned biplane leaves nothing to be desired.

The Horus possesses a flat glide and an excellent climb, is as stable as any high wing, and on windy evenings quite devoid of thermals. 45 sec. flights were consistently made. Hot afternoons should easily produce the minute. If anything further were needed to recommend the Horns to readers it might be added that the little bus is extremely economical, and will deplete precious stocks of balsa to a very small extent.

Fuselage. This is of the diamond-shaped type. Make two sides over the heavy black lines on the plan. Join these sides by means of spacers equal in length to those of the two sides. A square box structure is thus formed and is used set upon one edge. The fuselage is in two parts; a main body and a tail portion. Care should be taken to locate the laminated wing supports (A, B and C) in the correct positions above and below the fuselage. Bamboo outriggers run through the notches on the supports, and these are further secured by wire fastened as in Sketch 3. Remember the hooks at the rear of the body and on the tail portion. Small rubber bands over these hooks ensure a firmly fitting tail unit.

The bamboo undercarriage struts should be well bound and cemented to spacer No. 2. The plan clearly shows the construction and fitting of the streamline wheels.

Having carved and sanded the nose-block, it must be bushed to ensure the propeller shaft being at the correct down-thrust angle..."

Quote: "Going to the July 1942 AEROMODELLER with the evocative RUPERT MOORE cover painting showing some of the lads taking a break from duties for a spot of model making. In the back ground can be seen an Anti Aircraft emplacement. The first free flight plan is HORUS by well known RAY MALSTROM. It’s not one of the quirky designs that he later became famous for but a nice traditional looking little Bi-Plane. Full details are in the build article and on the plan. Ray said his first Horus flew right of the board and gave constantly good flights."

Update 31/5/2023: Replaced this plan with a clearer version, thanks to PB_guy.

Quote: "I have modified the Horus plan oz3766. I thought that it was a cute looking model that deserved some builds. But it would be easier with everything made full size.

Plan cleaned up. Resized wing mounts and nose plug so that everything is actual size. I added a page with full size layouts for wings and stab as well as all ribs."

Supplementary file notes

Article.
Previous scan version.

Corrections?

Did we get something wrong with these details about this plan (especially the datafile)? That happens sometimes. You can help us fix it.
Add a correction