MODRATEC Logo
Click our Logo to enter the MODRATEC Web Site.

MODRATEC Guest Lounge
Model Railway Technology Discussions
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Frog

 
Post new topic   Reply to topic    MODRATEC Guest Lounge Forum Index -> Words & Phrases
View previous topic :: View next topic  
Author Message
modadmin
Site Admin


Joined: 15 Jan 2004
Posts: 288
Location: Australia

PostPosted: Mon Jan 19, 2004 11:07 am    Post subject: Frog Reply with quote

The configuration of rails used when two railway tracks converge, diverge or cross at which the left rail of the right track meets the right rail of the left track.

Used: railway modelling (how general?), USA (how general?).

Cross reference: acute crossing.
_________________
All the best from "modadmin"
Forum Administration
MODRATEC
Back to top
View user's profile Send private message
dave55uk
Top Link
Top Link


Joined: 17 Mar 2004
Posts: 19
Location: UK

PostPosted: Mon Mar 22, 2004 7:25 am    Post subject: Frog Reply with quote

Possible correction : Acute crossing is I believe another name for a DIAMOND crossing.

FROG is also known as the "Vee" because of the shape the rails make.

In modelling terms, one can have an INSULATED frog or a LIVE frog.

In an insulated frog, the tip of the "vee" is usually made of plastic and insulates the opposing currents (+ and -) thus preventing a short circuit.
In a live frog, all the frog is made of metal and to prevent short circuits, an isolating rail joiner (known as FISHPLATES in the real world) should be used.

Of course, the electrical problem does not exist in the real world (or not as far as I know!)
Back to top
View user's profile Send private message Visit poster's website
dave55uk
Top Link
Top Link


Joined: 17 Mar 2004
Posts: 19
Location: UK

PostPosted: Mon Mar 22, 2004 7:36 am    Post subject: FROG - supplemental Reply with quote

As (very) quick sketch ...

http://homepage.ntlworld.com/potter55/frog.gif

HTH
Back to top
View user's profile Send private message Visit poster's website
Display posts from previous:   
Post new topic   Reply to topic    MODRATEC Guest Lounge Forum Index -> Words & Phrases All times are GMT + 10 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group