Re: A question of Scale Weight vs Springs [TANKS]

[Amir Tahvildaran <adt22-at-drexel.edu>]

Chrysanthos Kanellopoulos wrote:
>  
> Has anyone ever worked out what a Tiger would weigh at 1/6 scale?
>
> Thanks
> George
>  
> Good info and good question. Well, again, when the scale is doubled, 
> the surface is multiplied 4 times and volume, and therefore weight is 
> multiplied 8 times.
> SO,
>  
> In scale 1:1 a Tiger weighs 60 tons
> in scale 1:2 = 60 : 8 = 7.5 tons
> in scale 1:4 = 7.5  : 8 = 0.935 tons
> in scale 1:6 a steel Tiger SHOULD weigh 0.935 : 3.37 = 278 kgrs.
Hang on, there's a missing step

1:1 is 60
1:2 is 7.5
1:4 is .935
1:6 is ____

Careful, going from 2 -> 4 isn't the same as going from 4 -> 6.  The 
important concept is that
volume is cubic (3 dimensions).

No answers,
Amir
>  
> at scale 1:6 each of the 16 arm springs should handle a weight of  17 
> kgrs.
>  
> Plywood tanks with large batteries in scale 1:6 weigh about 50 kgrs, 
> or 1/5th actual weight.
> About 3.125 kgrs on each of the 16 springs.
> I hope that helps.
>  
> CHrys
>  
>