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High Flight Articles

Volume IX No. 3 Page 19c 1988



SUPERMARINE S-6B
Review by Chuck Spencer IMAA 821

Supermarine

The next plan is Jim Pepino's Supermarine S-6B. This plan comes on six sheets and sells for $60.00 rolled in a tube.

The first sheet has a left side view showing all former stations for the fuselage and floats. A Q - 50 is shown for power and the wing is shown at positive 3 degrees and the stab is at 2 degrees positive. Wing mounting bolts are shown along with landing gear mounting struts and attachments. Sheet two has a full size tip view showing float former stations and also shows the scale size with a note saying don't even think about using the scale horizontal stab. I will say that it does look rather small considering the mass of the airplane as a whole.

Sheet three has a full sized front view of the complete airplane. The exact scale wing has an 85 inch span, but the Lake Havasue races require a minimum span of 90 inches so you must build what is called the sport wing to be eligible to compete. There is no dihedral in this wing. The wing brace wires are shown as 150 pound test fishing leader or the Dubro 4.40 rigging rod. These work very well on my Flybaby monoplane.

Sheet four shows float construction. Floats are built on a keel of built up longerons with uprights and diagonals with formers added to each side and then sheeted and glassed. Strut mounting wires are also shown on this sheet. The single float center keel has plywood reinforcement at strut attach points.

Sheet five shows the 85 inch wing with instructions for increasing each panel 2 1/2 inches. The wing has quarter by half spruce main spars top and bottom with webbing between making an I-beam spar. Rear spar is quarter square spruce, top and bottom of the rib. All ribs are 1/8 balsa or ply where noted. Then the whole wing is sheeted with 3/32 balsa, making a very strong wing. Wingtip bows are laminated balsa. Ailerons are from 3/32 sheet balsa base plate with ribs and then sheeted on top with 1/16 balsa. The stab end elevator are also shown on this sheet. Stab is built up and sheeted and the elevators are laminations of quarter inch sheet. Sheet six shows fuselage construction. Fuse is built by first cutting out the lite ply formers then using quarter inch square spruce as a crutch, then planking the entire fuselage and glassing it. Motor mount shows lord mounts being used. Fin and rudder are shown. Fin is built up and sheeted and rudder is two laminations of 3/8 sheet.

This airplane is quite a project and not for the faint of heart. However, it should build into a very pleasing and good flying airplane and one you can be proud of.

NOTE - apparently there were some discrepancies in the float formers as I received a correction sheet from Mr. Pepino. The corrections will be drawn onto the plan. It is available from Scale plans and Photo services, 3209 Madison Ave., Greensboro, North Carolina 27403, $60.00.

Also, I received a letter from Myron Packard of Fibreglass Master. He will be making a cowl for Jim Pepino's new plan of the Supermarine S-6B and the cost will be $30.00. He also will be making glass floats for this 1/3 scale bird, but he must have ten confirmed orders before it will pay to start production. Probably by the time you read this production will have started, but check with Fibreglass Master to be sure.


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