Bulldozer (oz928)

About this Plan

Bulldozer. Free flight power cabin model. From Model Airplane News, May 1945.

Quote: "THE Bulldozer was primarily designed for beginners in the gas model field. Most novices are easily discouraged because the ship they choose to start building gas models is usually one that requires an expert craftsman. The Bulldozer's simple but sturdy construction can really absorb punishment, while its boxlike construction offers the maximum in simplicity and strength.

The wing uses an airfoil which has been thoroughly tested and used in many of my previous designs. The most efficient type of dihedral is a continuous curve and the nearest thing to it is polyhedral which was used to advantage in the Bulldozer. The tail section consists of a lifting stabilizer which helps lift the weight of the fuselage and also helps to prevent loops under full power. The wing and tail section are held on with rubber bands and in case of a crackup will simply fly off.

All in all the Bulldozer really lives up to its name. From the moment the wheels leave the ground and the ship points its nose skyward, nothing can stop it. It climbs steeply to the left under power and glides to the right when the engine cuts. The glide is something to rave about because it takes advantage of the slightest thermals. Also, it performs equally well in all kinds of weather.

Now to begin actual construction. First of all, scale the plans up to full size, which isn't difficult because all the measurements are plainly shown.

Fuselage. Pin the longerons down directly on the plans and cement the uprights in place. The hardwood motor bearers and the gussets are built directly into the fuselage. Both sides can be made simultaneously and then split apart when dry; you will find this procedure saves time and assures absolute uniformity. In putting the fuselage together it is best to cement the rear first, then glue on the spacers at the cabin..."

Update 25/05/2018: Added article, thanks to Pit.

Update 25/05/2018: Replaced this plan with a clearer copy, scaled up to full size.

Direct submission to Outerzone.

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