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  • November 18, 2018, 04:34:23 PM

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Author Topic: Sig Magnum  (Read 521 times)

Online Skip Chernoff

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Sig Magnum
« on: June 25, 2018, 03:40:49 PM »
Mike just yesterday I was able to buy a Sig Magnum Kit in perfect condition for $30 at a yard sale. Maybe you can help me with a few questions.
Do you feel it would adapt well to electric power?
Anything out of the ordinary that would help in building it?
Any modifications that you might recommend?
Should I go IC would an ST 60 be a good choice?

Any help you can give would be appreciated......Thanks,PhillySkip


Offline MikeyPratt

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Re: Sig Magnum
« Reply #1 on: June 26, 2018, 12:41:11 PM »
Hi Skip,
Great buy on the Magnum.  Yes the Magnum will work great on electric, the ST 60 is way out of date, heavy, vibrates, there are much better and stronger engines today than when I designed the Magnum.  Built stock it will fly way better than most of the models out there if the weight is held to under 60 ounces.  All my Magnums were under 60 ounces even with the ST 60, the ST 46’s were at 54 ounces.

Four glow:  Magnum 52 by Randy Smith.
Electric:  Cobra 2829-12 on five cells with 11-1/2” X 5 three blade.

Suggestions:  Make sure the weight of each piece of wood is in the 4 to 6 wood.  Use only slow drying epoxy to attach the wing & stabilizer skins.  Increase the area of the Stab & Elevators to 25% of the wing area, and move the S&E hinge line to 17-5”.   Note: If you are building it for NOS 30 it has to be built stock as drawn.

Please feel free to email me if you have any further questions.

Later,
Mikey
michael_pratt57@yahoo.com

Online Skip Chernoff

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Re: Sig Magnum
« Reply #2 on: June 26, 2018, 06:39:01 PM »
Mike I'll probably go electric on this project. I have a set of "E Flite" retracts  that I'd love to try out. Do you think the "Look at that" Factor outweighs the additional weight penalty? I would not build it for N30. BTW I flew an old old Magnum with an ST 51 and it was a fine flier,that's why I grabbed the kit.   Thanks,Skip

Offline MikeyPratt

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Re: Sig Magnum
« Reply #3 on: October 18, 2018, 08:21:42 AM »
Mike I'll probably go electric on this project. I have a set of "E Flite" retracts  that I'd love to try out. Do you think the "Look at that" Factor outweighs the additional weight penalty? I would not build it for N30. BTW I flew an old old Magnum with an ST 51 and it was a fine flier,that's why I grabbed the kit.   Thanks,Skip

Hi Skip,
Retracts would be cool.  However, that would require a lot of mods to the wing and spar area to get them to fir, but I’m sure it can be done.  I’ve flown a number of models with retracts some really well done and others not so well.  The thing about retracts is they really help in the wind to clean up the model in flight.  Normal weather thse are little to no help but has a “Cool look” to them.

Later,
Mikey
« Last Edit: October 18, 2018, 10:47:07 AM by MikeyPratt »


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