HMS Hood weight

[anttja]

can someone give me an idea of what I should be looking at as an all up weight for a 1:150 (1750MM) RC model of HMS Hood

 

[Zzyzx01]

Perhaps this link will help.

HUGE 1: 150 RC HMS HOOD BATTLE CRUISER – 69 INCHES IN LENGTH – READY TO RUN

...henry

 

[anttja]

thanks very much have already looked at that , I just hoping someone had some first hand experience.

 

[Roger Pellett]

Here’s how to do it:

1 Look up the displacement, the weight of the actual full sized ship. It will be in tons (1 metric ton = 1;000kg) so convert to kg. Multiply the displacement by the density of salt water. It is 64lbs/ cubic ft. You should be able to find Its equivalent in kg/cubic meters.

2. Calculate the volume of a rectangular cube: LxBxD
Where- L= Waterline Length
B= Beam
D= Draft
All dimensions are those of the actual ship.The result will be in cubic ft or cubic meters. If you use metric units for 1 you need to use them for 2 also.

3. Divide results from 1. by those from 2. The results will be a fraction, probably somewhere between 0.45 and 0.6. Naval architects call this the Block Coefficient.

4. Calculate the volume of a rectangular cube lxbxd. This time the dimensions are those of the model. These will probably be in cubic mm if your kit is European.

5. Multiply the results from 4. by the Block Coefficient calculated in 3. above.

6. Multiply the results from 5. By the density of salt water,.

A simpler method that will yield the same result is to divide the displacement of the real ship by the scale factor cubed.
Example: Displacement =D in tons, Scale= 1:96

Weight of model (in kg) = 1000D/(96x96x96)
Roger

 

[anttja]

I was actually looking for first hand experience