Herald (oz2594)

About this Plan

The Herald. Free flight gas pylon model. Pod and boom fuselage, with twin rudders. The original dates from 1941, this is a redrawn plan by Al Patterson from 82.

Quote: "This B job climbs like a homesick angel. And even a feather has a higher sinking speed. That's the impression we got. The Herald, by R Gene Chaille.

THE HERALD is the second model of this design that the author has built. The first was built just before the 1940 rules went into effect. It had 288 square inches of wing area and weighed sixteen ounces. The power used was an Ohlsson 23, which took the little ship up in a hurry. It glided in tight flat left-hand circles and was very sensitive to the slightest updraft. Several of the first few test flights were over five minutes. The first official flight in a contest ended with a four-minute, thirty-second, out-of-sight flight.

The new Herald meets the 1940 rules and still retains the features of the older ship. The new ship, having to weigh more, has been planked. The wing area has been increased to 342 square inches and the wing mount raised slightly. This change has not hurt the performance any, for the climb is about the same and the glide has been improved.

The model has not been flown in many contests yet, but it has placed well so far. The Herald took first place in the State model meet held at Lakeland. Florida, on last August 11th. About seventy contestants participated. Class A, B, and C ships competed against each other for the same prizes, so the Herald proved itself a winner by not only winning Class B, but also hanging up better times than the A or C jobs. During the week preceding this contest, it took a third place in a local contest on only an eight-second motor run.

Construction. The fuselage was designed to give a high degree of efficiency and also to be strong and not too difficult to build. it is not necessary to draw up full-size fuselage plans. Two keels are first cut from sheet; according to the full-sized outline on the plans. Also mark the former spacing on them with ink. The formers arc easily made by simply using a compass and drawing the correct-size circle directly on the balsa sheet. A table of former sizes is given on the plans. The firewall and Former A are both 1/8 plywood, and the rest of the formers are 1/16 sheet balsa. Be sure to cut the formers to the exact diameter given in order to assure a smooth planking job.

Now a 1/8 x 1/4 notch is cut into the top and bottom of each former for the keels. Fit the keels into the notches and cement. Be sure to keep the formers at right angles to the keels. The boom is made from two pieces of 34 x 1 x 18 inch medium-bard balsa. Cut a groove down the center of each so when placed together a piece of 3/8 in aluminum tubing will fit between them..."

Update 27/05/12: Thanks to theshadow, have now uploaded a clearer version of this plan that also includes the missing title block and credits, and the article text.

Update 15/08/2018: Added original article scan from Air Trails, May 1941 (inc drawings as printed) thanks to Mary, from https://rclibrary.co.uk/title_details.asp?ID=2259

Supplementary file notes

Article.

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