How to convert HO scale models to real-world scale???

 
  cityrail-rulez Chief Train Controller

G'day everyone,

Just a quick question, how can someone convert HO scale model(s) to real-world scale please?
I have a HO scale model but sadly due to the heat it's melting away Sad It's ok, as I don't really care because I want to 3d model it but need to know what type of ruler to use and how can I convert the measurements into real-world scale

Thanks in advance:)

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  duttonbay Minister for Railways

Measure the model, and multiply by 87.
  cityrail-rulez Chief Train Controller

Measure the model, and multiply by 87.
duttonbay

Truly a legend mate, thanks heaps Smile
  Roachie Chief Commissioner

Location: Kadina SA (formerly NSW)
You can also use one of these: http://www.ebay.com.au/itm/Expo-Modelmakers-Scale-Rule-3-5mm-HO-Gauge-74103-/330972055234?pt=UK_Trains_Railway_Models&hash=item4d0f78c6c2&_uhb=1

A scale rule......you measure the model and the ruler tells you the prototype length.....3.5mm + 1 foot.

Also, s light correction to the above response..... the multiplier is actually 87.1 (sorry)Wink

Roachie
  allambee Chief Train Controller

G'day everyone,

Just a quick question, how can someone convert HO scale model(s) to real-world scale please?
I have a HO scale model but sadly due to the heat it's melting away Sad It's ok, as I don't really care because I want to 3d model it but need to know what type of ruler to use and how can I convert the measurements into real-world scale

Thanks in advance:)
cityrail-rulez

You are using a HO model to make a 1:1 scale 3D model?
Why? you want to build a full size model?

the easiest way is do the 3D model in HO scale which eliminates the need to constantly do HO to 1:1 measurements, then once finished scale the completed 3D model up 87 times
  cityrail-rulez Chief Train Controller

Thanks for that bit of information, Roachie Smile I never knew there was any such ruler available lol

G'day allambee,

The reason why I need to convert HO into real-world scale it's because my 85 Class HO model is sagging in on the roof and I am making an 85 Class Electric Loco for MSTS and I need heights and lenghts of certian areas on the HO 85 classes body 'The is the only reason why I got the HO 85 class in the first place' I did attempt to paint it but I... I didn't paint it right so I had left it in methylated spirits to remove the paint which worked and today I noticed the roof sagged in and cracks on the front and roof of the main body and not only the methylated spirits melted it, it was the heatwave the boosted the problem

So before I do loose the 85 class HO body, I am 3d modelling it for MSTS... Of course I do have the 85 class plans but it doesn't show me all measurements of the other heights and lenghts on the body I need etc... So if I use what's left of the HO scale body I can determine the true lenght and height of the body of the 85 class and get it done for MSTS Smile

Ok, I never knew not to place cheep plasic into methylated spirits until now so I will learn from that mistake... Maybe!!! Hahaha
  TheBlacksmith Chief Commissioner

Location: Ankh Morpork
I don't know if the 85 class is kept preserved anywhere, but if it is, then your best method would be to go and measure the real thing.
  br30453 Chief Train Controller

You can also use one of these: http://www.ebay.com.au/itm/Expo-Modelmakers-Scale-Rule-3-5mm-HO-Gauge-74103-/330972055234?pt=UK_Trains_Railway_Models&hash=item4d0f78c6c2&_uhb=1

A scale rule......you measure the model and the ruler tells you the prototype length.....3.5mm + 1 foot.

Also, s light correction to the above response..... the multiplier is actually 87.1 (sorry)Wink

Roachie
Roachie

Roachie,

The old argument for HO scale being 87.1 rises again.

The accepted scale factor is 1/87.

If modelling a NSW AD60 Beyer Garratt the difference in length is 0.3 mm.

And the height difference for standard gauge rollingstock is 0.06 mm which is negligible.

So let us not get bogged down in so called accuracies.

87 it is!
  cityrail-rulez Chief Train Controller

I don't know if the 85 class is kept preserved anywhere, but if it is, then your best method would be to go and measure the real thing.
TheBlacksmith

Ah yes, '8501' is being preserved Smile However, I cannot seem to find it anywhere!!!

I have asked both RailCorp and ARHS where I could find '8501' to get detailed measurements of the loco but sadly they haven't really got back to me about this

the last location I know of is Werris Creek and it supposed to be at the Junee roundhouse by now??? It's not there as far as I am aware of, I never knew tracking down a locomotive could be so hard lol
  cityrail-rulez Chief Train Controller

Roachie,

The old argument for HO scale being 87.1 rises again.

The accepted scale factor is 1/87.

If modelling a NSW AD60 Beyer Garratt the difference in length is 0.3 mm.

And the height difference for standard gauge rollingstock is 0.06 mm which is negligible.

So let us not get bogged down in so called accuracies.

87 it is!
br30453

Righty O mate, thanks for that:)
  miktrain Deputy Commissioner

Location: Adelaide SA
You are using a HO model to make a 1:1 scale 3D model?
Why? you want to build a full size model?

the easiest way is do the 3D model in HO scale which eliminates the need to constantly do HO to 1:1 measurements, then once finished scale the completed 3D model up 87 times
allambee

And then go all over filling in and flattening all the lumps and bumps or unjoined lines that did not show up in small scale.
It is not hard to scale up or down, that is what calculator are for

http://scalecalculator.appspot.com/
http://webpages.charter.net/sinkwich/sdventure/html/sd_scalecalc2.htm
http://www.printmini.com/calc.html
For just a few, even a standard calculator will do it just put the scale (87.1) into memory and then multiply or divide by the memory.

Tony

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