Measuring or calculating weight appropriate to scale

[Cuppa_joe]

Hi all
I did a quick search and appears that no one has discussed how to correctly scale weight for your project. 
Maybe no one asked as they googled it elsewhere...or just dont care...what ever the reason here it is.

Theoretical max laden weight of  4900kg for a Focke Wolf 190 for example (weight is know)
say your kit is 1/32, how you calculate the correct weight for your scale (scale is known)

4900kg divided by the scale cubed
Or 4900/ 32/32/32= .149 kgs or 149 grams

Hope that answers a question never asked.

Edited January 1, 2021 by Cuppa_joe

[Broadway]

Or even thought about 😀

[Cuppa_joe]

1 hour ago, Broadway said:

Or even thought about 😀

indeed! hahaha!!

 

[Roman Schilhart]

I do fill the hulls of my small-scale AFV models with lead shots (or other weights, depending on available space) for a better 'sit'.

This works especially well with kits that have rubber-band tracks.

I find this calculation very interesting to relate to the real heaviness of things.

According to Cuppa Joe's suggestion, a German Panther tank of 44.8 tons should weigh 120 grams in 72 scale.

Mine is grossly underweight:

 

[Cuppa_joe]

15 minutes ago, Roman Schilhart said:

I do fill the hulls of my small-scale AFV models with lead shots (or other weights, depending on available space) for a better 'sit'.

This works especially well with kits that have rubber-band tracks.

I find this calculation very interesting to relate to the real heaviness of things.

According to Cuppa Joe's suggestion, a German Panther tank of 44.8 tons should weigh 120 grams in 72 scale.

Mine is grossly underweight:

 

wonderful! and there we have it! i have built planes which out of the box in 1/72 are generally HEAVIER in scale than the real thing how about that, but armour?! definitely needs it to "sit" as you say

[Cheshiretaurus]

The difference is cubed. 

 

So your Fw190 is 4900kg

X1000 to convert it to grams = 4,900,000g

Divided by 32÷32÷32 = 149.536 as you have already done

So 149grams

 

Short cut is divide by  32768 that is (32×32×32) 

Or an even better short cut is divide by 32.768 and that will give you a scale weight in grams from a real world weight in kg.

 

For 1:48 scale 48×48×48=110592

For 1:24 scale 24×24×24=13824

For 1:72 scale 72×72×72=373248

 

Hope this helps

 

CT

 

 

 

[bmwh548]

Maybe I'm missing something, but why would it be "cubed"? You're discussing weight not volume.

 

Edit: never mind, me stupid. 

Edited January 1, 2021 by bmwh548

[Cheshiretaurus]

3 hours ago, bmwh548 said:

Maybe I'm missing something, but why would it be "cubed"? You're discussing weight not volume.

Imagine your real world item is 2cm cube made from metal

2cm x 2cm x2cm is 8cm³

 

Your 1/2 scale model of this cube is also made from the same metal and is 1cmx1cmx1cm = 1cm³

 

1/2 the scale but 1/8 the  volume.

 

volume equates to weight. 

[Dave Swindell]

11 hours ago, Cheshiretaurus said:

Imagine your real world item is 2cm cube made from metal

2cm x 2cm x2cm is 8cm³

 

Your 1/2 scale model of this cube is also made from the same metal and is 1cmx1cmx1cm = 1cm³

 

1/2 the scale but 1/8 the  volume.

 

volume equates to weight. 

But what about Scale Density?   

 

[Cheshiretaurus]

7 minutes ago, Dave Swindell said:

But what about Scale Density?   

 

Is that like scale colour?😁

[Dave Swindell]

9 minutes ago, Cheshiretaurus said:

Is that like scale colour?😁

Scale Density is the new Scale Colour!