GE 44 tonner

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duckman903
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GE 44 tonner

Post by duckman903 » Sun Feb 10, 2019 12:57 pm

I've looked and found nothing, so if I use an HO engine which is 1/87 and I want to go up to 2 1/2" scale how much do I multiply the 1/87 ratio to get 2 1/2" scale

pete
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Re: GE 44 tonner

Post by pete » Sun Feb 10, 2019 3:46 pm

I know almost zero about locomotive building, so bearing that in mind since there track gauge is .650" apart for HO scale then to scale up to 2 1/2" you'd divide whatever gauge that uses by the .650". That should give you the multiplication factor. If it is exactly 2 1/2" then you'd multiply all the dimensions by 3.846

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ALCOSTEAM
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Re: GE 44 tonner

Post by ALCOSTEAM » Sun Feb 10, 2019 6:45 pm

In HO one foot equals 87 feet or 1044 inches. In 2 1/2" scale one foot equals 2.5 inches.

If we take a 120" in HO scale that comes out to 1.379", the same 120" in 2.5" scale comes out to 25". That looks like from HO to 2.5" scale needs a multiplier of 18.129.

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Rich_Carlstedt
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Re: GE 44 tonner

Post by Rich_Carlstedt » Sun Feb 10, 2019 11:19 pm

well, If HO is 1/8" to the foot and you want 2-1/2" to the foot , the 2-1/2" has 20 , one eights in it so the ratio is 20 to 1

Rich

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ALCOSTEAM
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Re: GE 44 tonner

Post by ALCOSTEAM » Mon Feb 11, 2019 12:15 am

If HO was 1/96 scale then 1/8" to the foot would work, but HO is 1/87 scale or 1 ft equals .13793 of an inch. 2.5 inches divided by .13793 equals a multiplier of 18.125136

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4gsr
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Re: GE 44 tonner

Post by 4gsr » Mon Feb 11, 2019 6:20 pm

Would that be like laying 96 GE44 HO engines put end to end and be the length of a real one? :shock:
Ken

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ALCOSTEAM
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Re: GE 44 tonner

Post by ALCOSTEAM » Mon Feb 11, 2019 10:08 pm

4gsr wrote:
Mon Feb 11, 2019 6:20 pm
Would that be like laying 96 GE44 HO engines put end to end and be the length of a real one? :shock:
nope

but if you put 87 end to end you would get real close to the prototype length

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Rich_Carlstedt
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Re: GE 44 tonner

Post by Rich_Carlstedt » Wed Feb 13, 2019 7:28 pm

ALCOSTEAM wrote:
Mon Feb 11, 2019 12:15 am
If HO was 1/96 scale then 1/8" to the foot would work, but HO is 1/87 scale or 1 ft equals .13793 of an inch. 2.5 inches divided by .13793 equals a multiplier of 18.125136
Thank You Alco !
I was always under the impression that it was called "HO" because it was HALF of "O" gauge-therefore HO.
Several train guys told me that years ago.
What is O-27 then ? and is O gauge 1/4" to the foot ?
Rich

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rudd
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Re: GE 44 tonner

Post by rudd » Wed Feb 13, 2019 7:32 pm

Easier if you start with 1/4" - just move the decimal over one place. :)

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