It looks like there are still some questions about figuring dimensions for a helix. I've just uploaded an Excel file that might be useful. It has places for you to enter your desired track radius, the vertical distance between turns of the helix, and the amount of benchwork overhang you will allow.
The formulas in the spreadsheet calculate the overall diameter of the resulting helix, the amount of run for each turn of the helix, and the percentage grade. You can then tweak the inputs to see which dimensions work for you. Look in the Files section for Helix Calculations. Gaylord Gill --- In [email protected], Talmadge C 'TC' Carr <group_list@...> wrote: > > What about a rise of 3% to 3.5% > > On Mar 3, 2013, at 4:41 PM, scale S only wrote: > > > whereas to gain the requisite 4" between levels will take 16 feet > > at approximately 2% > > Talmadge C 'TC' Carr > Sn42 and Hn42 somewhere in the wilds of the Pacific Northwest > group_list@... > ------------------------------------ Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/S-Scale/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/S-Scale/join (Yahoo! ID required) <*> To change settings via email: [email protected] [email protected] <*> To unsubscribe from this group, send an email to: [email protected] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
