Dave,
First of all, you can figure out your grade easily. The formula is very simple. 1/8" per foot rise is a 1% grade. 2/8" (1/4") per foot is a 2% grade. 3/8" per foot rise is a 3% grade. Get it? Just measure a one foot length and then measure the height difference at the high end. It doesn't matter what scale you are in.
So, if you have a 3/8" height difference at the end of a 3' run, that is a 1% grade. A 2% grade for the same 3' run will get you a height difference of 3/4" (6/8"). A 3%grade will get you 1-1/8" (9/8").
Just measure everything in 1/8" increments to keep it simple and divide by the length you have marked off.
Second, have you tried Bullfrog Snot? It does increase your pulling power.
B-)
Oh I know the formula, I just meant that I never measured my linear footage of track to do the calculations, that's all. I just jumped in construction the table and too busy making the grade (clearances) so a double stack (train) could pass under the track.
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Edited by dl85vette at 12/29/2010 10:59 AM PST