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Magnum weight - so how am I doing?

Stuka Stunt Main Forum · 11 of 11 known posts recovered

bhadley0 · Oct 06, 2003 06:24 PM

#0 source
Well I just got my new Tom Morris Scale so I can check on the weight status of my Magnum Project. I have heard that they tend to build heavy, so I wanted a check on where I am weight wise. The only thing I did was to replace the sheeting with contest quality and I made the flaps solid instead of built up. Also added a bit more side area. The plane is completely built, covered in silkspan, sanding sealer applied and sanded, with two coats of clear applied. It is ready for paint. The engine is a Tom Lay ST .51 with tougue muffler. I weighed the plane, engine, muffler, fuel tank, landing gear and wheels,spinner and prop. The plane has 1 oz of tip weight. So the total is... 48.5 oz.
So whats a light paint job and clear coats going to cost me? If I keep the paint to 5 or 6 oz (is this reasonable?) I should have a pretty light plane considering it has 700 sq in? Am I doing ok on this?
Thanks,
Brian

Bill Little · Oct 06, 2003 07:31 PM

#1 source
I would say you could come out pretty good. Just go as light on the colors and final clear as you can and still get the job done.
The Tom Lay ST G51 I have had no problem hauling a 64b oz. SV 11.
And it's doing a great job so far on the USA-1!
Bill


Dont worry about the mule going blind 'til you get the cart loaded!

Ion Brazil · Oct 07, 2003 05:33 AM

#2 source
So far you are OK. More, OK-OK!!

BE CAREFUL WITH THE PAINT!

A suggestion: Choose a dark color. Less coats needed. les paint, less weight.

I'm Sooooooo happy with my 37 oz. Eliminator "on the bones", but at the same time in great fear and trembling about the finish.

I asked Bobby how in this world did he manage to build that new Genesis (630 sq")at 47.5 oz.

He said "watch out for too much glue, and he has, I understand a special technique for using less wood and still having a rigid plane.

His "secrets" are available as videos.I'm buying he whole dollection, even if I have to hock my saxophone...

God bless you!

In Christ,

Ion

Currell · Oct 07, 2003 06:55 AM

#3 source
You may have some difficulty keeping the weight of the paint to 6 ounces or so. Anyway, let's say your final weight is 55 ounces. This makes your loading 11.3 ounces/ft2 if the area indeed is 700 squares. This is pretty good, and, given proper trimming, your M. should do well.

Currell

Larry Cunningham · Oct 07, 2003 10:34 AM

#4 source
The T&L ST .51 should be a great choice for power.

Don't worry, the weight will creep up there suddenly and mysteriously. But if you can manage to keep it under 60 ounces, you'll have a very good airplane. Magnums are big old pussycats, they fly quite well, and have enough wing area to handle higher weights.

[photo not recovered: 3e69bb3870f12ad5.jpg]

"All I ask for is the opportunity to prove that money doesn't buy happiness."

Ion Brazil · Oct 08, 2003 05:24 AM

#7 source
>"All I ask for is the opportunity to prove that money
>doesn't buy happiness."

Yeah..."Oh, Lord, I want to prove you that even if I win $20,000,000 on the lottery I'll keep my integrity"

God bless you!

In Christ,

Ion:+

Mikey · Oct 07, 2003 02:02 PM

#5 source
Brian,
Hi! buddy, it sounds like you are doing a great job on the Magnum. Try and remember this a normal dope paint job adds 10 ounces from bare wood to clear. You have a lot of that done if it is up to sanding sealer. You should end up around 56 ounces or so. You are going to need at least 1-3/4 ounces of tip weight to start, with so that will bump you up a bit. The T&L St 51 will handle anything up 65 ounces so you are well on your way. You can contact me at [email protected] .

Later
Mikey

Mike Pratt

builditright · Oct 07, 2003 11:15 PM

#6 source
LAST EDITED ON Oct-07-03 AT 11:16 PM (CDT)
 
Hi Brian

I threw it all on the scale to see how the one I'm doing is coming out and it weighs in at 32oz. so far no to shabby so far.

http://www.clstunt.com/htdocs/dcforum/DCForumID1/5490.html

Thank You and God Bless
Walter Umland
aka / builditright
email me at [email protected]
or for kits email me at
[email protected]
http://www.builtrightflyright.net

LNeumann · Oct 08, 2003 08:12 AM

#8 source
>Hi Brian
>
>I threw it all on the scale to see how the one I'm doing is
>coming out and it weighs in at 32oz. so far no to shabby
>so far.
>
>http://www.clstunt.com/htdocs/dcforum/DCForumID1/5490.html

What does this include, Walter? Or, more precisely, what does it not include? I assume no engine, prop, spinner, tank, wheels, or finish. Anything else, or is this the completed package ready to finish before the power plant and wheels are added?

Leonard Neumann

bhadley0 · Oct 08, 2003 10:52 AM

#9 source
Good point Len. 32 oz for everything but the finish would be REALLY light. My Magnum, without engine,prop, tank, wheels, etc., just the model, covered,sealed, with clear coats and ready for paint was 29 oz. So this would be comparable to Walters.
Brian

builditright · Oct 08, 2003 08:19 PM

#10 source
LAST EDITED ON Oct-08-03 AT 08:20 PM (CDT)
 
This is all the built parts of the kit(as shown in the picture)
minus any finish, tank, wheels, engine etc.

Thank You and God Bless
Walter Umland
aka / builditright
email me at [email protected]
or for kits email me at
[email protected]
http://www.builtrightflyright.net