Extreme Speed Prop Planes Discuss the need for speed with fast prop planes (Screamin Demon, Diamond Dust, Shrikes or any REAL sound breakin'''' plane)

New and improved Magnum on the way!

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Old 07-05-2003, 11:36 PM
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Rudeboy
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Default New and improved Magnum on the way!

Well, I started making the ribs and framing up the wing for my new Magnum tonight.

Man those ribs are skinny! The wing will be barely 20mm thick at the center. Wing ribs are 1.5mm balsa, centre rib 3mm.

That's why I opted for 8! wing spars. They are all balsa. Four 4mm spars at the center of the wing, two 3mm spars on the nose and two 3mm spars at the rear.

Skin will be 1 mm balsa.

I don't know yet if I will be glassing the wing center... I'll see how sturdy it is when it's finished.

It will be a pain to hold because of the thin wing skin, but boy, will it be light...

I'll keep you guys posted on the progress.
I'm very curious how a lighter and much more aerodynamic Magnum will perform... maybe I can finally slap the 8x10 prop on the engine...
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Old 07-06-2003, 04:22 AM
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LGM Graphix
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Default New and improved Magnum on the way!

why not just cut a foam core with and use a carbon fiber spar?

Looking forward to seeing it though
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Old 07-06-2003, 01:59 PM
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Default New and improved Magnum on the way!

Well... seeing it will be a bit of a problem... I don't have a digital camera...

I know a foam core wing would be easier and faster to construct, but a balsa construction is (can be) so much lighter. Balsa is also more prone to transport damage, but hey, planes are built to fly, not to sit around in the back of the car...

I guess I'm just a "balsa head"...
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Old 07-06-2003, 04:12 PM
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Default New and improved Magnum on the way!

hehehe, well, balsa can be lighter, but you're talking to a recent past FAI pattern flier. Honey combed foam with a carbon spar and contest balsa will always be lighter, and generally stronger then a built up balsa wing, the mistake most people make is using far to much epoxy to skin the wings with

However, get a digicam and get some pics!
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Old 07-11-2003, 05:29 AM
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Default New and improved Magnum on the way!

so? any pics and progress yet?
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Old 07-11-2003, 05:54 AM
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Default New and improved Magnum on the way!

drat, double post :S
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Old 07-11-2003, 12:30 PM
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Default New and improved Magnum on the way!

Wow, Wow..... I'm not that fast...

I'm in my holidays now... which mean I have even less time to spend in the basement...
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