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

Magnum on its way

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Old 06-18-2003, 10:47 PM
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Mattyb
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Default Magnum on its way

Ok guys

I have just found out that my magnim is on its way and should be here this week. This is my first speed plane and am using it as a trainer for my jet.

I tried a search but was overwelmed by the amount of info and just dont have the time to read through it all.

So my question.

In basic format what are the main changes i need to do or know about before flying.

Any help appreciated
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Old 06-19-2003, 01:58 AM
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RampRat
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Default Magnum on its way

The most important things would be:

-Move the CG back to 130-135 mm's.
-Use less than recommended throw on the ailerons.

The Magnum is fast, but it's quite noseheavy for landing with the CG at 120 mm's, so moving it 10-15 mm's to the rear gives the elevator more authority at low speeds, instead of fighting to keep the nose up on final approach. With the CG moved back, landings will be nose-high with almost no use of elevator, and you'll almost kiss the ground on touchdown.
Without moving the CG, you'll be having you'r elevator.stick all the way back to keep the nose up on final approach.. ...and touchdown would be renamed to "bodyslam" or something similar..

Oh.. And the Magnum rolls faster than anything i've ever seen with the recommended throws...

I DO however recommend reading all the other topics conserning the Magnum. There may be many of them, but it will be well worth taking the time to do so.

The manual from Weston is not the best one i've seen, and any misunderstandings in setup may cause your models early retirement (Most people i have talked to have crashed their Magnums within the first 5 seconds of flight).

You'll find just about all the known tricks and hints for the Magnum if you search this forum (extreme speed prop planes) for the word "magnum".
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Old 06-19-2003, 12:29 PM
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Gricey
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Default Magnum on its way

A couple of others:

* You may also like to change your tank as the one that comes with the kit has a tendancy to burst and soften the balsa in the nose. I used a 6oz by Dubro, fitted straight in.

* Run a warm (not hot) iron over the black coverings before you run the plane. To hot and the yellow covering peels away quite badly so be careful. The black covering seems to come loose in many places after a few flights and in some cases will fly off mid air.

* Replace the elevator plastic control rods with metal rods as the standards bind and will not give you anywhere near the extra amount of elevator throw that you need to land. (50% to 100% more than recommended throw).

* Use a lot of exponential in your radio, you will need it!

* Get someone with a good arm to throw it for you on the first launch. Flat and straight in to the wind, put the index finger on the back of the fues and throw it like a javelin. You shouldn't need to run, this will just make the exit uncontrolled.

* Consider learning to fly your Magnum on a stock .40 or .53, even on an 10*7 prop it is very quick and easy to loose.

* Make sure you don't fly it without Insurance!!!! or in a very large space.

* You will find it easier to fly on a sunny cloud free day.

* Fit your prop at 9:15 (eg. horizontally flat) so that when the engine cuts, the compression drives it away from the ground when you go to land.

* Enjoy! you have one of the finest economical speed planes in existance....
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