GE 44 tonner
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 Posts: 316
 Joined: Fri May 28, 2010 3:40 pm
 Location: Winchendon Mass. USA
GE 44 tonner
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
Re: GE 44 tonner
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
Re: GE 44 tonner
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.
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.
 Rich_Carlstedt
 Posts: 1487
 Joined: Sat Dec 21, 2002 12:16 am
 Location: Green Bay Wisconsin USA
Re: GE 44 tonner
well, If HO is 1/8" to the foot and you want 21/2" to the foot , the 21/2" has 20 , one eights in it so the ratio is 20 to 1
Rich
Rich
Re: GE 44 tonner
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
Re: GE 44 tonner
Would that be like laying 96 GE44 HO engines put end to end and be the length of a real one?
Ken
 Rich_Carlstedt
 Posts: 1487
 Joined: Sat Dec 21, 2002 12:16 am
 Location: Green Bay Wisconsin USA
Re: GE 44 tonner
Thank You Alco !
I was always under the impression that it was called "HO" because it was HALF of "O" gaugetherefore HO.
Several train guys told me that years ago.
What is O27 then ? and is O gauge 1/4" to the foot ?
Rich
Re: GE 44 tonner
Easier if you start with 1/4"  just move the decimal over one place.

 Posts: 316
 Joined: Fri May 28, 2010 3:40 pm
 Location: Winchendon Mass. USA
Re: GE 44 tonner
A friend had the April 1973 Model Railroader which has as the center fold a GE 44 tonner which is a measured drawing , so if I decide to go 2" scale do I just multiply the feet times 2 example 29' X 2 = 58" . my brain is just not being friendly lately.
Re: GE 44 tonner
I think that some people are confusing "scale" with "gauge." This is partially because the way in which the question was worded. Perhaps the OP can clarify which he has in mind.
Re: GE 44 tonner
the 2" scale example you give works.
If you want to go 2 1/2", just multiply feet x 12 x 2.5/12
29 feet is 348". 348 x 2.5/12 = 72.5".
With this method, if you had say 29'6", you'd just add the 6" to the 348" to get 354" and you'd get 733/4"
If you want to go 2 1/2", just multiply feet x 12 x 2.5/12
29 feet is 348". 348 x 2.5/12 = 72.5".
With this method, if you had say 29'6", you'd just add the 6" to the 348" to get 354" and you'd get 733/4"