--- In [email protected], "David Engle" <rirocket@...> wrote: > > Can someone please recommend a cheap calculator or app that will do the > radius of a curve when the arc and chord lengths are measured. DJE >
Don Thompson turned me on to this web site so many years ago he's probably forgotten. It might have information for you though I cannot guarantee all the links still work. http://www.urbaneagle.com/data/index.html It is my understanding that prototype curves are measured by degree of central angle subtended by a 100' chord (From Paul Mallery's Trackwork Handbook). It is also my understanding that 10 - 12 degrees is extremely tight for prototype. That converts to a radius of ~7.5 to 9 feet(!) in S Scale. Or conversely, an S Scale 40" radius curve would be about 27 degrees on the prototype. Not sure if that helps, but there's a ton of other info on the site you might find useful... Jim Kindraka Plymouth, WI ------------------------------------ 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/
