Stickler (oz10716)

About this Plan

Stickler. Rubber duration model.

Quote: "Six years of constant experimenting evolved this very simple, high-performance stick job. Stickler, by Dick Korda.

THIS stick job is the result of about six years of constant experimenting with different ideas picked up at contests and in model books. The main idea behind it was to keep it as simple as possible and yet get top results from every flight. Originally, the model was a 100 square inch job, back in 1934. Its main features were a very fast climb combined with a free-wheeling prop which proved fairly effective at that time. However, the wing area was raised to 150 square inches in 1936, then to 200 square inches in 1937, and just recently, since these plans were sent in, was raised to 300 square inches. The dihedral was changed to polyhedral. Free-wheeling props gave way to one-bladed folding props and finally to two-bladed ones.

Several types of wing mounts were tried on this stick model. The first was just an old-fashioned bird-cage mount which made the ship a bit more stable, but this idea was discarded because of its added drag and weight. Next to be tried was a Goldberg mount which works wonders on a gas job but which acted more as a rudder on this stick. After quite a lot of testing and contest flying, it too was finally given up as it made the ship very hard to adjust under power, and caused it to have a very large circle in the glide, allowing it to drift out of sight too fast.

Several other ideas added only recently were the use of a balsa skid on the bottom of the body, running from the back of the filled-in nose section to the seventh cross brace. This will help keep dirt and small stones from getting inside and cutting the rubber. This skid is made from a hard sheet of 1/4 x 3/4 balsa. Gas-model Silkspan paper was substituted for ordinary tissue on the body. When properly doped, the ship can be flown in wet weather without having the body twist from the force of the rubber.

When doping the model, try the following adjustments in the wing and tail, looking at the model from the front. The stabilizer should have a little more lift on the right side. The rudder post should be cemented firmly, but the leading edge should be offset to the right about 1/16 to 3/32 in, and pinned in place until the correct setting has been determined and then cemented. The left wing tip section should also have a little more lift in it than the rest of the wing. To determine the amount of incidence needed, start by resting the wing directly on the body and gliding it. Keep adding sheets of 1/32 flat until the ship has a very flat glide with a slight right turn.

After all adjustments have been completed the model should have a motor run of about 75 seconds, a circle of about 200 to 250 feet in diameter and an average of about 3-1/2 to 4 minutes in the calm evening air.

The ship is very sensitive to currents and has gone out of sight directly overhead on a dead-calm day, and has also been flown from sight on very windy days when 5 or 6 minutes was top time. Use as much care in adjusting and flying the ship as you do in building it and you will have as good a chance as the next fellow. May all your flights be big ones! "

Scan from DBHL, cleanup by theshadow.

ref DBHL-6184.

Direct submission to Outerzone.

Added article, thanks to Mary, from https://rclibrary.co.uk/title_details.asp?ID=2313 which includes the drawings as first published 1941, also includes wing ribs and formers at full size.

Supplementary file notes

Article.

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