HO Scale Model Train – Couple Questions regarding turns, grades?

Question by Infamous: HO Scale Model Train – Couple Questions regarding turns, grades?
Hello, I’m returning to model train crafting again, and I finally got a 13 foot x 9 foot in-door patio to work with, and I plan to turn at least half of the patio into a world.

Based on the size of the patio, I’m planning to turn the “large” sections of the patio into no more than 3-4 feet of plywood, leaving room in the center to stand and be able to reach across (since my arm length is about 2 feet). Some sections will have multiple heights (bridges, cliffs, etc).

Based on that description, here are a few of my questions;

1) How much feet (or maximum grade) will be needed to elevate the train for every 6 inches? (In other words, how long does the grade need to be to accomplish going up for 6 inches?

2) How much space is needed to accomplish a 180 degree turn?
3) What about a 90 degree turn?

4) Is there any wiki or online resource for getting these measurements or percentages?

Thanks in advanced! 🙂 This is a fun hobby.

Best answer:

Answer by Diane B.
Check out some of the model railroading sites and forums, or there are probably books on model railroading at the library.

Here are some possibilities online:
http://www.google.com/search?q=how+to+make+HO+model+railroad+grades
http://www.google.com/search?q=how+to+make+model+railroad+grades
http://www.google.com/search?q=how+to+make+model+railroad

What do you think? Answer below!

A transformer is used to convert 120 V to 8.6 V in order to power a toy electric train. If there are 260 turns

Question by Australianhotti: A transformer is used to convert 120 V to 8.6 V in order to power a toy electric train. If there are 260 turns
Please help me!!!
A transformer is used to convert 120 V to 8.6 V in order to power a toy electric train. If there are 260 turns in the primary, how many turns should there be in the secondary?

Best answer:

Answer by jrrymiller
The voltage ratio is the same as the turns ratio. So the easiest solution is:
120/8.6 = 260/X whoops I got the X on the bottom, no problem
8.6/120 = X/260 and X = 8.6*260/120
= 18.63 turns
actually you would probably put 19 turns as a practical matter.

Add your own answer in the comments!