need mathematics people asap for centerline tank and bombs for scale - RC Groups
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Apr 18, 2011, 11:35 AM
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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
Last edited by greatplanes; Apr 21, 2011 at 10:52 AM.
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Apr 18, 2011, 02:38 PM
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rick.benjamin's Avatar
We need to know your model's fuselage length and wingspan
The 500 lb bomb will be simple to figure.

Center line drop tanks were of various sizes, shapes, and construction.
75-200 gallon tanks
aluminum and paper tanks.
Last edited by rick.benjamin; Apr 18, 2011 at 02:54 PM.
Apr 18, 2011, 03:22 PM
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Ldm's Avatar
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
Apr 20, 2011, 01:04 AM
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rick.benjamin's Avatar
General Purpose WWII 500LB Bomb sized for WS 56" and 65"
Apr 21, 2011, 10:49 AM
Registered User

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
Last edited by greatplanes; Apr 21, 2011 at 10:57 AM.

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