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Scale conversion

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  • Member since
    October 2017
  • 92 posts
Scale conversion
Posted by Andy110675 on Wednesday, February 21, 2018 9:57 AM

Hi everyone ive been getting on well with the cement plant and now moving onto building a preheater tower but im strugling with the results ive come up with regarding size.I used a conversion on google typed in 70m in 1/1 converted to 1/87 and got a result around 800mm does that seem right.

  • Member since
    February 2018
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Posted by S and C Branch on Wednesday, February 21, 2018 11:17 AM
Yes, 70 meters is 70,000 millimeters. 70000 divided by 87 equals 804.6 mm
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Posted by Andy110675 on Saturday, February 24, 2018 7:39 AM

Sorry for not replying sooner been away for two days.Thanks for your reply.Not going to be cheap then the amount of stairs they have and railings but it keeps me busy. thanks again.

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Posted by tstage on Saturday, February 24, 2018 7:48 AM

Andy,

FWIW, 1:87.1 is a slightly more accurate ratio for calculating HO-scale...

Tom

https://tstage9.wixsite.com/nyc-modeling

Time...It marches on...without ever turning around to see if anyone is even keeping in step.

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Posted by DSchmitt on Saturday, February 24, 2018 8:08 AM

tstage

Andy,

FWIW, 1:87.1 is a slightly more accurate ratio for calculating HO-scale...

Tom

 

 

Actually 1:87.0857142 is the correct ratio,  but for most modeling purposes it doesn't make a discernible difference.. 

I tried to sell my two cents worth, but no one would give me a plug nickel for it.

I don't have a leg to stand on.

  • Member since
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  • From: Bakersfield, CA 93308
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Posted by RR_Mel on Saturday, February 24, 2018 8:17 AM

Shucks, I bought the Handy Convertor from Stan’s Trains, it’s got a calculator for every possible model railroad question.  I’m lazy and the program is quick and accurate.
 
I have no affiliation with Stan’s Trains, I’m lazy and it works.
 
Mel
 
Modeling the early to mid 1950s SP in HO scale since 1951
  
 
My Model Railroad   
 
Bakersfield, California
 
I'm beginning to realize that aging is not for wimps.
 
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  • From: Reading, PA
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Posted by rrinker on Saturday, February 24, 2018 11:36 AM

 Now you begin to see why even many highly detailed and respected structures are selectively compressed. Especially huge industries like steel and cement.

                       --Randy

 


Modeling the Reading Railroad in the 1950's

 

Visit my web site at www.readingeastpenn.com for construction updates, DCC Info, and more.

  • Member since
    October 2017
  • 92 posts
Posted by Andy110675 on Sunday, February 25, 2018 3:06 AM

Thanks everyone ive been using this conversion site for my measurments,scroll to the bottom you will find the chart i used this sometime ago to build a 1/9th F-16

http://www.scalemodelersworld.com/online-scale-converter-tool.html

 

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  • 92 posts
Posted by Andy110675 on Wednesday, February 28, 2018 2:17 AM

When you say compressed is that not going to make the model smaller than Ho scale.

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Posted by gmpullman on Wednesday, February 28, 2018 4:43 AM

Andy110675

When you say compressed is that not going to make the model smaller than Ho scale.

 

The scale remains the same. Doors, windows, handrails stairways all scale to proper size. Randy means that a steel mill that may occupy 200 acres or more would never fit in most of our layout rooms.

 

https://www.loc.gov/item/pa2948/

 

I looked at the rolling mill in Homestead, PA some years ago and it runs about twenty city blocks about 220 feet in HO). With selective compression you could make that merely ten city blocks and fit it inside a big arena Whistling

The actual Walthers HO blast furnace is selectively compressed to a much smaller size, 75 feet. There were smaller blast furnaces in the 1900s but most modern ones ran about 110 to 120 feet. Selective compression.

Cheers, Ed

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Posted by Andy110675 on Wednesday, February 28, 2018 5:27 AM

I see what you are saying now, scale remains correct but the structures are smaller than the real thing.

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  • From: Reading, PA
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Posted by rrinker on Wednesday, February 28, 2018 7:24 AM

 Yes, selective compression doesn't mean changing the scale,. it means leaving out select bits to make the sctructure smaller while retaining the basic form. Say a building that has 3 sections, each 10 windows wide, with a two towers, so you have a wing with 10 windows, a tower, another wing with 10 windows, another tower, and then the third wing with 10 windows. Even if it would fit on your layout exactly, it would overwhelm most everything else, unless your layout is extremely huge. So you cut each wing down to say 3 windows. The basic form is still there - 3 wings, 2 towers, but now the building is a whole lot shorter.

                                    --Randy

 


Modeling the Reading Railroad in the 1950's

 

Visit my web site at www.readingeastpenn.com for construction updates, DCC Info, and more.

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