The photo does show a closed frog. However if one really wanted to model the prototype then the frog rails would have to touch the frog point just as the points at the other end of the turnout do, and then model the spring mechanism (actually a hydraulic ram) with a rod that is attached to the each frog rail. These type of frogs may most likely be found where there a lot of passenger traffic. The UP, two months ago installed the last of the four closed frogs in the double crossovers at the Tehcahapi Depot, as the amount of traffic meant they were constantly welding the frog point. Bill
--- On Mon, 9/26/11, Charles Weston <[email protected]> wrote: From: Charles Weston <[email protected]> Subject: Re: {S-Scale List} frogs To: [email protected] Date: Monday, September 26, 2011, 2:48 PM Well, actually there is a sort of real world version of a closed frog turnout. See: http://ogaugerr.infopop.cc/eve/forums/a/tpc/f/3181048701/m/4652961017 which includes a photo. I have seen turnouts like this. Charles Weston --- On Mon, 9/26/11, Tom Hawley <[email protected]> wrote: From: Tom Hawley <[email protected]> Subject: {S-Scale List} frogs To: [email protected] Date: Monday, September 26, 2011, 2:29 PM Here's a picture that illustrates the principle of the moving-point frog. http://en.wikipedia.org/wiki/File:Bewegliches_Herzstueck.jpg There is no real-world version of that other "closed-frog" turnout. Tom Hawley [Non-text portions of this message have been removed] [Non-text portions of this message have been removed] [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: [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/
