Dr Gerbil-Fritters Posted November 21, 2011 Share Posted November 21, 2011 A bunch of pics showing a heeled turnout for Mr Trisonic... Â Â Â Â Â Â Â Â Â Â Location, South MacDonald and East Baseline, Tempe Phoenix. Turnout has typical espee single headblock for the switch stand, also fitted with self guarding frog so no guard rails. Link to post Share on other sites More sharing options...
trisonic Posted November 21, 2011 Share Posted November 21, 2011 Interesting. Self Guarding Frog. I haven't seen one near me - yet. I'm sure they are probably quite common, however. Thanks! Â Best, Pete Link to post Share on other sites More sharing options...
Glorious NSE Posted November 21, 2011 Share Posted November 21, 2011 Self guarding frogs are very common on low-speed US track - but near impossible to model easily as they rely on the width of the wheel being consistent to guide it through the frog... Â Might be do-able in P87? Link to post Share on other sites More sharing options...
Talltim Posted November 21, 2011 Share Posted November 21, 2011 How do they work? Link to post Share on other sites More sharing options...
Glorious NSE Posted November 21, 2011 Share Posted November 21, 2011 The wheel face is stopped from moving sideways by the raised pieces on the outside of the frog, that prevents the wheel from taking the wrong route. Link to post Share on other sites More sharing options...
Talltim Posted November 21, 2011 Share Posted November 21, 2011 Ah, i get it now, the raised lip acts on the outside of the wheel, rather than the flange being the guide as is usual. (yeah, I know that normally the flange shouldn't touch anything) Link to post Share on other sites More sharing options...
Glorious NSE Posted November 21, 2011 Share Posted November 21, 2011 That's it. Sometimes if you're looking at rolling stock images you'll find one with a shiny stripe on the edge of the face of the wheel as well, which I suspect is from contact with these... Link to post Share on other sites More sharing options...
Prof Klyzlr Posted November 22, 2011 Share Posted November 22, 2011 Dear RMWebbers, Â Is it just me, or does the switchrail in the 2nd and 3rd image look as if it has taken damage? The "top edge" looks pretty crinkled and chewed-up, particularly where the "head" has been dround away to nothing right at the tip... Â Happy Moodelling, Aim to Improve, Prof Klyzlr Link to post Share on other sites More sharing options...
dave1905 Posted November 22, 2011 Share Posted November 22, 2011 The points are pretty worn and the rail looks like 2nd hand rail due to the flow on the head of the rail. On the other hand the max speed on this track is probably 10 mph so there isn't much of a problem. The tie condition is fair and there aren't any marks of anything being derailed. Â Did you notice the paper insulation on the rods and plates? Â Did you notice the normal route is the more frequently (or at least more recently) used, based on the rust on the head of the rail? Link to post Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.