|May 25, 2006, 01:59 AM|
My New Insulator!
This plane was inspired by this thread: Pushing the limits of FFF:
I built one while the topic was still hot, and loved it so much that I promised myself I'd build another. So here goes.
Made some significant changes from my first attempt:
- Used 3mm depron for the wing, instead of 6mm FFF.
- Folded an airfoil shape into the wing to help at low speed.
- Used lighter weight HS-55 servos, mounted in the wings instead of the fuse.
- 6mm depron elevons (instead of balsa).
- Built a solid EPP nose, much more durable than FFF up front!
- 2S Li-po instead of 3S.
- Rewound a CD-ROM motor for 10 turns delta to match Li-po.
- 4.5X4.1 APC E-prop instead of a 5X2.5 no-name for more speed.
- Built in a little bit of dihedral for stability.
The weight of this one is only 178 grams (6oz) , down from 260 grams on the first one.
Needless to say, it is an absolute bullet - probably seems faster than it is becuase of it's small size. The light weight allows to to float quite nicely when gliding - very easy to land. The airfoil allows for nice, smooth high-alpha flight at low speed, but it still has that trademark unlimited vertical and blinding roll-rate!
Had a ball blasting it around my local park today. This is the only plane that I've built a 2nd one of - and I'm glad that I did. I think that the biggest improvement was to replace the FFF nose with an EPP one. The battery is in a cavity on the nose-piece, which means that it will be protected in a crash, and that the heaviest item in the plane is not going to plough through the nose on impact.
All you Insulator vetrans out there - give this one another go, apply what you've learned since and have fun again!
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|May 25, 2006, 07:58 AM|
Looks good, Kahn.
You are right. The insulator was/is a great design, and with the advancements in power and materials we've had the past year, aught to be even better!
I wonder what happened to the Sea-Plane version someone was working on? I was just thinking the shoulder wing makes a little more sense to me for a fwew reasons, and might be cool, at that.
It'd be sweet to have hot-wired EPP wings and fuse as a kit, huh?
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