Dave.... I would hate to be perceived as a wise guy, but wouldn't it be easier to just go buy a #8 turnout and measure it? Or, easier yet, use it? Or, take the NMRA diagram down to Kinko's and enlarge it to exact S scale and then measure it? What am I missing here? Good luck with all the higher mathematics.......whew!!! My head is spinning.....
The local trackwork expert says the best way to scratchbuild a turnout is to lay in the stock rails to go wherever you want them to go and then fit in the frog and points afterwards. Smooth flowing trackwork is the end result -- on curves and tangents alike. He just follows the line on the Homosote and builds No. 12 switches on curves for his mainline turnouts. Absolutely beautiful. Cheers...Ed L. --- In [email protected], "David Engle" <[EMAIL PROTECTED]> wrote: > > I am trying to lay out a pair of switches for either a #7 or #8 frog, following the NMRA RP 12.2 diagram. I am trying to get the right distance between the stock rails at several locations between the points and the frog, but before the frog and the rails behind it are in place. > > If I start from the switch point and go out dimension 2, (4- 3/16"), I need to go crosswise by dimension 4 (5/32") plus the track gauge (7/8") to get my stock rail spread. Right? > > Same for Dimension 13 of 6-9/16" or 6-7/8":the spread should be dimension 12, (5/16" plus 7/8") Right? > > Third checkpoint is Dimension 17, (8-7/16" or 9-3/8"), the spread is 1/2"+7/8" or 1-3/8" . > > Fourth checkpoint is point of frog, (Dim. 8 of 11-3/8" or 13-5/8") where the spread would be 1/3/4" > > Is this feasible, or am I leaving out some fudge factors or other items to be considered. > > Thanks Much > > DJE > > > > [Non-text portions of this message have been removed] > 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: mailto:[EMAIL PROTECTED] mailto:[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/
