F5F-1 Skyrocket (oz10584)
About this Plan
Grumman F5F-1 Skyrocket. Control line profile stunt model, for 2 x Fox .35 engines.
This design appeared in the Flying Models Decade of Designs book 2, see Mary's page at https://rclibrary.co.uk/title_details.asp?ID=1068
Direct submission to Outerzone.
Plan was extracted from the scan posted by 50+AirYears at https://www.rcgroups.com/forums/showthread.php?1638419-Vintage-Old-Timer-Plans-PRE-1977-PLANS-ONLY/page14#post22351205
Update 02/03/2021: Added article, thanks to JohnLaycock.
Quote: "This one is it. It's what Geritol is to tired blood. If your tired of the same old types in modeling, this ship will renew your enthusiasm. It's the most exciting plane I have ever had in the air. And believe me I've had a few. It's close enough to scale to enter a scale contest, but will do the whole stunt pattern without mushing or sinking in maneuvers.
Former national stunt champ Jim Vornholt claims it could go to the Nats and show them all a thing or two. The first flight was enough to show us that a twin engined plane can do the pattern as well as a single engined ship can. Only difference is it's a little
faster. We were able to do loops, squares, triangles, inverted flight and a few stunts not in the book.
We found we got the best performance with the outboard engine running rich, and the inboard running normal or a little lean. This way the outboard engine will quit first and enable you to shoot landings for scale. The ship will loop on one engine but don't try any overheads this way. The test model weighed in at 67 ounces. Sounds heavy, but with two Fox .35's and the wing design it could easily carry another 10 ounces.
The real plane was an experimental shipboard fighter for the Navy designed by Grumman. It was plagued with problems from the beginning and by the time they were ironed out, the plane was shelved as being obsolete. But the work done on the Skyrocket made many contributions toward the development of the Tigercat.
Some may think this model difficult to build, but it isn't. Just read and follow the plans, and you will be flying in no time, and having the time of your life.
Construction: First, hand pick your wood for strength and lightness. Cut the I-beam from 1/4 in balsa sheet making sure that it is straight, Now cut the two body and four engine nacelle sides from 1/8 sheet balsa. Cut the nacelle and I-beam doublers from 1/8 plywood, and cement in place.
While these are drying cut the stab, elevators and rudders from 1/4 in sheet balsa. Sand these to shape. Install the elevator horn and hinge together. Cement the rudder pieces together, with 1/8 in offset to the right in each one.
When the I-beam has dried, secure the bellcrank in place, on a 1/16 plywood platform. After the nacelle doublers have dried, cement the 3/8 x 1/2 motor mounts in place. Now attach the 1/8 x 1/2 balsa capstrips in place, on the I-beam.
Cut body formers from 4 inch balsa sheet, pin and cement in place, Pull the rear of the body sides together on a 1/4 in piece of balsa scrap and cement..."
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