Hooptee Too II (oz13123)

About this Plan

Hooptee Too II. Control line rat racer model. For Supertigre 40 RRV (G-21 series) engine.

Quote: "Rat racing requires highly refined model, dependable engine, and team work. Here's a winning combination. Hooptee Too, by John F Kilsdonk.

DEPENDABILITY is the prime requisite of any racing machine. Hooptee Too was developed around this fundamental requirement. No fancy frills or 'tricky-wickets.' Everything is strictly functional.

Hooptee Too is the latest refinement in Rat Racers for me. It has evolved out of six years of competition in the event. Hooptee Too has been the most successful airplane that I have ever built. In two years of competition, it has placed in 16 of the 18 contests entered, placing first eight times. It currently holds the Michigan State Record of 5:22 minutes for 140 laps.

There are three elements in Rat Racing: the airplane, the engine, and the team. Hooptee Too will more than fit the bill for the airplane.

The airplane must be durable enough to withstand many hours of practice and still be ready to go to the contest on Sunday. Yet, the performance cannot be sacrificed for durability, so a compromise must be decided upon. Shoot for a final weight of 28 to 30 ounces, including the engine, and the plane will perform quite satisfactorily.

The wing is carved from a good straight piece of basswood. A small block plane and a good sanding block are all that is necessary to carve the wing. The recesses for the lead-out tubes are cut using a small Xacto gouge or a circular table saw. Gouge out the areas for the bellcrank and the outboard wing weight. Add the aluminum tub-ing lead-out guides and the lead for the wing-tip weight.

The fuselage crutch is cut from 3/4 in bass-wood. Use the pattern on the plans for a good compromise of strength and weight. Tap and drill the pan for the engine. A number 43 drill should be used as a pilot for the 4-40 tap and a number 36 drill for the 6-32 tap.

The stabilizer is carved from 3/16 bass-wood, employing the same technique used on the wing. The landing gear shown is easier to do than it looks. A good pair of vise-grips and a good pair of pliers are all that is required. A torch is not necessary and should be used as little as possible to avoid removing the temper from the wire. After the wire is bent and pushed through the pan..."

Direct submission to Outerzone.

Supplementary file notes

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