samarkh

Whilst talking to my son about scales the question came up about weight. If a tiger I weighs around the 57tonnes, how much should a true 1/16 scale tank weigh?

Yours Simon M.

h8ted

about 3.5t

might be wrong - maths was never my strong point

uhu

Around 13.9 Kg (for an estimated weight of 57,000 Kg)

Cheers
Jose

pattoncommander

plus the 2.5 tons for the 7.2 v 85,000 maH battery.

BIGMIG

LOL LOL That was a good one Pattoncommander,
Size of a model scaled down is one thing,trying to scale the weight might be a little tricky.And why would one want to do that.??? These poor little motors have enough trouble with all the metal tracks and wheels that guys put on them.
BIGMIG

johnmar78

easy its 1 to 1/16 scale, so you divide every thing by a factor of 16.

57/16 =3.5625 kg. But at the same time you must get a realistic fiqure of engine power in 1/16 sclae =560/16= 35 hourse power....... i dnt think my 380 Tamiya produces that much..not even 1hp. But I think tamiya has eliminated the powe/weight ratio by introducing a reasonable gearings. I have changed t11 to t8 to my opinion motors to cut down the tank speed.

icecreamslick

My Feedback: (9)

English must have been troubling, also.

....sorry, I was just kidding. [sm=thumbup.gif]

Jason

Leo2A6 Owner

Considering he is from Austrailia. The term "maths" is correct in it usage. The UK refers to math courses as such too.

icecreamslick

My Feedback: (9)

I guess I need to laugh as myself then! Shows what I know. Welcome to the forum, h8ted.

pattoncommander

Gear ratio has a tremendous effect. The tank I rebuilt (1;1) only weighed 11 tons, with all the upper armor gone and rebuilt with 3/8" rolled steel reenforced with 1x2 braces. I dropped in a Ford 4 cyl and C-3 auto transmission, but the differential had a 1'1 gear reduction so I was clocked by radar at 34 mph and it climbed over sand birms with no effort at all. But, plastic at that weight..don't think so.

uhu

Nope, the ratio is cubic, so you need to divide the 1:1 weight for the thir power of the scale factor, in this case 57,000/16^3, the 1:16 weight is 13.9160 kg.

Regards
jose

lanierrl

Is that not only equal to 6.3 pounds (2.2kg per pound)?

tac23

The other way round- 1kg=2.2 lbs - so its about 30 or 31 lbs

uhu

30.679528lbs (avoirdupois) according to WWW Unit Converter.
Jose

971wright

UHU You are quite correct if scaleing down weight is the only one that does not scale as such 1" cube scale down by 1/16 equals 1/16"cube does everybody get it now 16x16x16.



regards pete

lanierrl

I don't know why but I want a 30lb tank now. That would be more than three times heavier than my HL Tiger with metal tracks and gears. What kind of motors would it need I wonder. I suppose you would have to use Tamiya electronics, HL boards would fry correct?

pattoncommander

with a 1;6 tank that weight, don't bother with a TBU/DBU,,,,drive it like a T-34 and just ram the enemy tank I used to get hassled by city authorities about my steel track tearing up the streets....when just the opposit was true, the concrete street was tearing up my tracks....same hassle would apply to such a tank on an RC battlefield....no one would let you on it.[:@]

pattoncommander

typo....1'16, not 1;6.

lanierrl

Well, I don't battle any way. Besides, how cool would it be to actually drive "through" the grass in the back yard as opposed to "on" the grass in the back yard. This is like the gun upgrades that shoot clear through a coke can. There is no reason to do it other than it's cool!!

I may have found my Holy Grail!!!!!

lanierrl

Okay,

I have a question for all you math wizards out there. If I am converting armor thickness from real to 1/16th scale is that as simple:

100mm (frontal hull armor) / 16 = 6.25mm, 60mm (side hull armor) / 16 = 3.75mm, etc?

Also, how would you calculate the max speed? 35kph = 21.75mph. What is this in 1/16th scale?

uhu

Hi Lanierrl

Linear dimension are converted dividing by the scale factor, time is not scalable so speed converts simply dividing by 16, e.g. 35/16=2.1875 Km/h, your maximum scale speed should be around 2.2 Km/h (1.367017 mph), that's the reason our scale speeds are so unrealistic.....I've seen tanks speeding at some 6-7 Km/h.....OMG

Two dimensional dimensions (areas) are converted dividing the real dimension by the square of the scale factor, and volumes by the cube of it.

Hope it helps
Jose

lanierrl

Thanks!

So armor thickness is two dimensions therefore I just do it as I did above right?

I think once I get my HL Tiger in the 30lb range I won't have to worry about it going too fast.

zippy0036

Just my 2p's worth.....at 1:16 scale, gravity is 16 times stronger. Air is 16 times denser (drag and wind resistance) and also, wouldnt your materials need to be 16x less dense too? Also would the armour have a rockwell number 16x lower (hardness) ? [sm=confused.gif]

uhu

@Lanierrl

Thickness is a linear dim, so you're doing right

@Zippy0036
Does a model airplane on a conveyor belt.......???

Regards
Jose

zippy0036

@Zippy0036
Does a model airplane on a conveyor belt.......???

maybe.....[sm=biggrin.gif]