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AR15.COM
12/10/2011 6:15:01 PM EDT
I belong to a modeling forum and a discussion came up talking about scale weight. I'll try to explain. Say you are building a 1/35 scale model of an Abrams tank that in real life weighs 67 tons Using all the same materials as the real tank. Would the resulting weight of the finished model be 1/35 of 67 tons or 1.91428 tons ?  That doesn't sound right to me at all.

What do you think about this ?

12/10/2011 6:35:38 PM EDT
[#1]
No. Weight is based on volume which is a cubic power.
Scaling is only a power of 2.
12/11/2011 2:12:28 PM EDT
[#2]
So are you saying this would be the way to figure it ?

67 tons x 1/35 x 1/35 x 1/35  = .00156 tons in scale weight or about 3.12 lbs

I'm not disagreeing with you, it just seems counter-intuitive
12/11/2011 2:54:04 PM EDT
[#3]
Quoted:
So are you saying this would be the way to figure it ?

67 tons x 1/35 x 1/35 x 1/35  = .00156 tons in scale weight or about 3.12 lbs

I'm not disagreeing with you, it just seems counter-intuitive


That is correct.

The prototype weight/35^3
12/12/2011 11:16:24 AM EDT
[#4]
Quoted:
So are you saying this would be the way to figure it ?

67 tons x 1/35 x 1/35 x 1/35  = .00156 tons in scale weight or about 3.12 lbs

I'm not disagreeing with you, it just seems counter-intuitive


Yes, if you were able to construct an exact scale model using the same materials, that is what you would get.

Consider the simple case. A cube 2" x 2" x 2".

it has a volume of 8 cubic inches. If you make a half size "model" of it, it would be 1" x 1" x 1" cube and have a volume of 1 cubic inch.

1/2 the size, but 1/8 the volume.