In a message dated 10/30/2002 3:01:09 AM Eastern Standard Time, 
[EMAIL PROTECTED] writes:


> As a point of interest here  some real turnouts used #24 
> frogs with a lead
> distance of 185 feet and a radius of 5600 feet!

FYI - some of those #24s are "high-speed" switches, designed for full 
speed operation.  I beleive the freight railroads run through them at 
55mph, but on NJ Transit/Amtrak at the Keaney interchange, the passenger 
trains run thru at about 70+mph.

I also believe they have movable frogs.  There are 3 pneumatic actuators 
for the tie rods, and one or two for the frog, which closes to present a 
continuous rail for the passing track.

  Pete 

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