Slarmi (oz9755)

About this Plan

Slarmi. Chuck glider model. An 18 inch wingspan chuck glider with a fine contest record.

Quote: "This chuck glider is the result of six years' intensive research into this type of model. The original prototype was built and flown successfully as long ago as 1960. The layout remains unchanged but the different wing and tail shapes have been used, resulting in good consistent performances in all weathers. This model has also been flown successfully by another Leatherhead Club member.

Make the wings first from very light straight grained wood. Cut to the profile, adding the bamboo leading edge. While this is drying, make the tailplane and fin, using quarter grain wood, cut and sandpapered to section shown. Next, carve and sand wing to section, then cut the wing into four pieces, sandpapering the edges to give the correct dihedral angles, then cement the wing sections together - precementing is important. Check that dihedral angles are correct at this stage, set aside to dry. The fuselage should now be made from long straight close grained wood without bends or twists...

The model performs best if flown in very wide left hand circles approximately 75 feet in diameter. Bending trailing edge of fin to the left to achieve this. For best performance the model should not exceed 1-1/8 ounce. It will fly in virtually any weather conditions and should average 45-50 seconds in calm air. Do not try to make the model roll off the top, keep to the flight pattern shown. If your arm is weak, shorten the moment arm by 1in and try again. Remember your name and address as these models can be lost just as easily as their bigger brothers, and this one does not have a dethermaliser.

The model has also made the following flights: 23 mins. 40 secs. recovered 8 miles away, 33 mins. 23 secs. landing only 500 yards away, and 1 hour, 32 mins, recovered 12 miles away. All these flights were witnessed."

Scan from DBHL, cleanup by theshadow.

ref DBHL-7461.

Direct submission to Outerzone.

Update 05/02/2018: added article, thanks to RFJ.

Supplementary file notes

Article.

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