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The Annapolis Junction
Bob Sprague's model railroad and track planning services
Track Planning Tools
Here are some free tools I've developed to help in the track planning process. Feel free to download and use for non-commercial purposes.
Bob's Curve and Grade Calculator.
This is a MS Excel spreadsheet that allows you to enter radius, degrees, and grade and find out how long a curve is and how much of a rise there will be at a particular grade percentage. For helixes, enter 360°.
Bob's Train Length Calculator.
This is a MS Excel spreadsheet that allows you to calculate the length of a train based on number of cars in N, HO, S, or O scale, or to find out how many cars will fit in a given track length.
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