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Old Apr 18, 2011, 11:35 AM
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United States, MA, Boston
Joined Jan 2002
107 Posts
Help!
need mathematics people asap for centerline tank and bombs for scale

hi guys
i`m scaling out an ancient global models p-47 razorback 40 - 60 ? 55 " w.s and 46" length
i`m scaling this out big time, w kb .46 and 3 bladed prop
one of the things i want to include is a center line drop tank, and 500 lb bombs on wing pylons
my question is , what size do i make the tank and bombs. they will be carved out of soft balsa
i`m not very good at this type of equation, and hope a brainiac can help me out
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Last edited by greatplanes; Apr 21, 2011 at 10:52 AM.
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Old Apr 18, 2011, 02:38 PM
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rick.benjamin's Avatar
USA, OR, Damascus
Joined Apr 2004
4,044 Posts
We need to know your model's fuselage length and wingspan
The 500 lb bomb will be simple to figure.
http://bbs.hitechcreations.com/wiki/...php/500lb_bomb
http://www.303rdbg.com/bombs.html

Center line drop tanks were of various sizes, shapes, and construction.
75-200 gallon tanks
aluminum and paper tanks.

http://www.armorama.com/modules.php?...=172919&page=1
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Last edited by rick.benjamin; Apr 18, 2011 at 02:54 PM.
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Old Apr 18, 2011, 03:22 PM
Ldm
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United States, PA, Conestoga
Joined Jun 2006
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Yes , and I think there was two global P47 , the small one (56' span or so and a larger one in the 65" span area) can you tell us the one
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Old Apr 20, 2011, 01:04 AM
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USA, OR, Damascus
Joined Apr 2004
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General Purpose WWII 500LB Bomb sized for WS 56" and 65"
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Old Apr 21, 2011, 10:49 AM
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United States, MA, Boston
Joined Jan 2002
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oops. i`m bad !!!!!!!!!!!!! this is the 40-60 sixe i guess,

sorry for omitting that.. vital info do not have original box for specs, and manual says nothing about specs the wingspan is 56", and fuse length is about 46". w/ cowl on.
i know longer posses original box, so these specifications taken w/ tape measure
my guess is it will weigh in at about 7-9 lbs ? using a k & b .46 using a pitts muffler, and 3 bladed 10x7 prop
{ which i might have screwed up on } . k b is a poor man`s 4 stroke, so a 3 blader should be o.k.
any mistakes i`m making, pleas chime in as this is my first REAL scale project
thanks for all your help and future advice
god bless
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Last edited by greatplanes; Apr 21, 2011 at 10:57 AM.
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