Discussion in 'N / Z Scale Model Trains' started by nolink5750, Oct 14, 2007.

Hey guys, before I do this I want to make sure I am doing my math right. I need to drop 1" "real life". At a 2% grade I calc. that would be 600' scale or 3.75" "real life". Or at a 1 1/2% grade I calc. that to be 800' scale or 5' "real". Is there a easy formula for this or am I correct in the way I am figuring this? Thanks................
2. ### ezdaysOut AZ way

At 2% you will drop 2" every 100", or if you want to drop only 1", that comes to 50", or 4' 2". 1.5% grade would mean 1.5" per 100", or 66.67" for 1". No need to find what that means in the full-scale world unless you're curious, if so, just multiply the results by 160.
3. ### 60103Pooh Bah

If you're planning to have one track cross over another, remember that the clearance has to be measured from railtop to the bottom of whatever is going over, but the grade has to be measured from railtop to railtop.
Don is right on the arithmetic -- converting to scale feet then back again involves multiplying by a number and then dividing by it again. You have better things to do with your life.