converting one scale to another

[dwbeckett]

What's working for me is a 3X HO for indoor G. I am currently building the SAN JUAN CENTRAL, as a two track main line of 10 & 11.5 Diam. in a 420 Sq foot side of 3car garrage. 

[Anonymous]

is there a table that gives me a conversion factor to convert from one scale to another.  IE: If I find a layout I like but it's in HO and I want to convert it to G what factor do I use.  If anyone can help I would appreciate it.

Thanks

 

 

Hi,

 

You take the value of the scale you want to convert from i.e. HO 1:87 and divide the  value of the scale you want i.e. 1:24. --- 87:24= 3.625  3.625 is the multiplier.

Doing the same the opposite way means 24:87=0,275  0.275 is again the multiplier.

As a for instance: track radius in "LS 1:22.5" is R1 (600mm) and you want the corresponding radius in "N" (1:160)  22.5:160 = 0.140  the radius would be 600 x 0.140 = 84mm

The method remains the same for any scale conversion.

 

Hope that helps

 

ER 

 

 

 

[tangerine-jack]

Tough question really.  Nobody has yet defined exactly WHAT scale G scale really is.  There are several conventions used that are most popular (1:20.5 and 1:29 having been mentioned already), but it seems that anything that runs on standard G gauge track is considered to be "G" scale. 

 

This topic of scale has been discussed ad nauseum on this and other forums, so do a forum search and see what has been written by people wiser than I.

 

As for me, I bought a track planning template from the hobby store and a lot of paper.  If I see an HO layout I like I'll draw it from the template I have then determine the dimensional footprint, and compensate for the idiosyncrasies of scale differences.  You will be appalled at how much real estate a scaled up track plan from HO to G takes up!  I like doing it however as it is a great mental exercise that generates many new ideas for my own layout.

[Anonymous]

Here is one.

http://www.onlineconversion.com/

Toad

 

 

[GearDrivenSteam]

Not hard at all. All you need is the right chart. Here's one:

http://www.urbaneagle.com/data/RRconvcharts.html

[altterrain]

That's going to be tough to do. Most HO is running 18 and 22 inch radii track. Multiply that by 3 for 1:29 (modern big steam and diesels) or ~4 for 1:20.3 (3 foot narrow gauge) and you wind up with 9 to 15 foot diameter (large scale track in usually listed in diameter) track. Actually, that's not bad.  Many layouts run as tight 4 foot diameter track. A minimum of 8 foot diameter will let you run most locos and rolling stock, though many run on less. It usually best to fit as large as possible diameter track in your space for better running.

-Brian 

[Anonymous]

is there a table that gives me a conversion factor to convert from one scale to another.  IE: If I find a layout I like but it's in HO and I want to convert it to G what factor do I use.  If anyone can help I would appreciate it.

Thanks