Aren't we licky to have a skilled engineer in out group! I watied to see if Dick would supply an official answer as I wasn't sure myself. Thanks, Dick.
----- Original Message ----- From: "Richard Karnes" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Thursday, December 23, 2004 2:05 PM Subject: Re: [S-Scale Modeling] turnout angle > > Thomas Stoltz wrote: > >> There seems to be two major methods of defining the angle, one uses an >> isosceles triangle, the other a right triangle. >> >> Does anyone know which is considered more correct? > > Tom et al -- > > It's not a matter of opinion. It's the isosceles trangle. The frog > number equals one (1) divided by twice the tangent of half the angle. > This can be confirmed by consulting any prototype turnout-dimension table. > Example: A #5 turnout has a frog angle of 11 degrees 25 minutes > 16 seconds (11.42111 degrees). Using the right-triangle method, this > turnout's number would be 4.95. Using the isosceles method, it's 5.0000 > -- the actual frog number. Please be aware, however, that, for practical > purposes, choice of method makes no discernable difference unless > you're dealing with frog numbers less than 4. > > Dick Karnes > Change your membership, change your message settings, use our CALENDAR, view shared files or photos, view the list archives, GO TO http://groups.yahoo.com/group/S-Scale/ Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/S-Scale/ <*> 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/
