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Old 09-24-2004, 04:23   #1 (permalink)
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Model cars and some maths (lazy question, sorry)

Hey I was looking at die cast model cars on the net today and got to wondering: a 1/16 scale model is self explainatory as far as size goes, but what weight would that 1/16 model need to be in order to faithfully replicate the scaled down weight of the original car.

Initially one might think "Du-OH, just divide the real car weight by 16!" - but when you think about it I don't think that's right - and the sums back that up (ie. 2500kg car divided by 16 = a model about 20-something cm long that weighs 156kg - somehow I don't think that's right).

Does anyone know the actual formula for scaling down the actual mass/weight of something?? (is it squared? - ie. 2500kg divided by 16x16 = 9.7kg model??)

I should sit and think about this but it's easier to just post and see if someone knows.
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Old 09-24-2004, 04:34   #2 (permalink)
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Re: Model cars and some maths (lazy question, sorry)

umm, would be cubed...or the square root to the power 3 thing (cubed root?)...wouldn't it?
so confused, been outta school too long...

-Stu :)
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Old 09-24-2004, 05:18   #3 (permalink)
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Re: Model cars and some maths (lazy question, sorry)

if its 1:18th the weight should be 1:18th

imagine if it was made of steel, rubber, alloy and everything.....
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Old 09-24-2004, 05:24   #4 (permalink)
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Re: Model cars and some maths (lazy question, sorry)

A 1/16th model is 1/16th as long, 1/16th as wide and 1/16th as high, to retain scale it would be 1/(16*16*16)th i.e. 1/4096th of the mass.

1.825 tonne GT = 446 odd grams but it should max out at 16 km/h and do a 13-14 second ET on the 25m finishing at 6.5 MPH
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Old 09-24-2004, 05:27   #5 (permalink)
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Re: Model cars and some maths (lazy question, sorry)

smartarse
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Old 09-24-2004, 05:34   #6 (permalink)
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Re: Model cars and some maths (lazy question, sorry)

Does that mean they need to be serviced every 1,000 km's 15,000/16 0r every and that the service should be 1/16th of the price as carried out by the ford dealer.



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Old 09-24-2004, 14:31   #7 (permalink)
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Re: Model cars and some maths (lazy question, sorry)

Quote:
Originally Posted by MaD_WoG
if its 1:18th the weight should be 1:18th

imagine if it was made of steel, rubber, alloy and everything.....
My xa coupe is the best model i have rubber tyres that are foam filled so they are soft these auto art cars are the shit Does anyone here collect TRAX?
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Old 09-24-2004, 18:16   #8 (permalink)
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Re: Model cars and some maths (lazy question, sorry)

Quote:
Originally Posted by MaD_WoG
smartarse
Be nice.
Personal attacks are not tolerated on here.

Just because you are wrong on this point does not mean that you are a
childish ignorant prick. You can show that in other ways if you need to.
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Old 09-24-2004, 18:19   #9 (permalink)
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Re: Model cars and some maths (lazy question, sorry)

Quote:
Originally Posted by flappist
Be nice.
Personal attacks are not tolerated on here.

Just because you are wrong on this point does not mean that you are a
childish ignorant prick. You can show that in other ways if you need to.
HAHAHA settle cheif its not like he called him a ****en piece of shit **** chiken ****er cat rpaist wanker wat ever
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Old 09-24-2004, 19:25   #10 (permalink)
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Re: Model cars and some maths (lazy question, sorry)

Quote:
Originally Posted by Bundy-Bear
HAHAHA settle cheif its not like he called him a ****en piece of shit **** chiken ****er cat rpaist wanker wat ever
See there is a good example.
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