O.K., math geniuses. By what percent do I need to enlarge an N scale plan (1:160) to make it O scale (1:48)? It would really help if you could also advise me how much to lengthen, say, a three inch line on the N scale plan to make it O scale. I lthink it would be bout 9.999 inches. Izzat right? I thank you for your help. Jim here.
I believe that the answer is to multiply the N scale dimension by 3.333 to get the O scale dimension. This would make your 3 inch line come out to be the 9.999 dimension you stated.
See the conversion chart here: http://urbaneagle.com/data/RRconvcharts.html
Please note that the conversion chart assumes that O scale is 1:48. I’m not an O scale guy, but I know that there is the 1:48 and some other proportions (1:45?). So I don’t know exactly which one of the O scales you actually want.
Thank you, Maxman. That was just what I needed. Jim here.
Divide the scales. 160/48 comes to 3.33r, and that becomes your multiplier for enlargement, or if going the other way and down-sizing, it becomes your divisor.
Crandell
Yes, we can do the math every time. And when I went to school they spent the first few years trying to teach us the theory of how various formulas (formuli?) were derived. But then when you get out in the real world you get asked “why the heck are you doing that?. We don’t have time to waste. That’s what we have handbooks for.” A lot easier, and much less chance for error.
Thanks for the help, Crandell. Jim here.