Hysteria 600. Free flight power competition model.
Quote: "A really good contest gas model should win or place second at least 50% of the time. To do this, it must be more than consistent - it must also be hotter than its competition. Consistency and high performance are elusive qualities in the same airplane. When you get both, however, you are tough to beat. The Hysteria 600 is a blown-up version of my 1968 1/2A Hysteria, which has racked up an 88% average of first or second places this year. The 1/2A version suffers in class A competition against larger ship-engine combinations however, so it makes sense to take advantage of the rules with a true Class A ship.
The '600' has been impressive in two contests to date, and should be a great ship for the 1969 contest season, which for me, will be about twelve contests. It is tough enough not to require a mid-season overhaul (and re-trim), and so far it has only dropped one max in twelve competition flights (that one was a 5-second motor run - I goofed), so it is hot enough. I haven't made any major trim changes in it since the third test flight. In other words, it also seems reliable and simple to handle.
600 square inches of wing may sound like a lot for a .15 engine, but observe the ultra-low aspect ratio, which is a way of cutting climb drag down, yet does not appreciably hurt the glide with so light a wing loading. The ship now weighs 18.75 ounces after two months of existence.
I've finally gone to boxier fuselage construction to add strength, reduce warping, and save weight. It really is worth the few extra minutes of build-ing time. Nothing is new in wing and stab construction - I have tried other methods recently, but always conclude 'bird-cage' is best for light gas models.
I'm also convinced the K&B .15 is the best class A fuel engine around - it will hold a setting beautifully and it is a true screamer. For B, I have used a Fox .201 (with no changes in model trim needed), but I'm still looking for a light, hotter B engine - perhaps a Super Tigre 23. I realize Starduster 600's fly well with .29's, but the Hysteria would probably suffer from the ultra low decalage this would necessitate. The best route is a .15, .19, .201 or .23 combination with the bigger engines using the lightest possible case castings. On the subject of power, I have now fitted a tuned pipe to the K&B .15 but haven't had a chance to test fly it. I question the necessity of tuned pipes on unlimited ships..."
Hysteria 600, Flying Models, January 1969.
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