View single post by wahiba
 Posted: Thu Dec 20th, 2012 05:11 pm
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wahiba



Joined: Tue Dec 9th, 2008
Location: Keighley, United Kingdom
Posts: 67
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I am working on 16.5mm gauge.

The three rail thing came about when I discovered three rail automation whereby a following machine acts as the switch for the one in front. It is popular with model tram enthusiasts who realistically collect from the overhead.

Doing my own thing I decided to model the 'wireless' tram using a third rail in lieu of the overhead. Methods used in the past have included studs that switch on as the tram passes over, and a live rail in a slot. The latter was quite extensive in London at one time.

Current systems include a variation on the stud from Ansoldo. Basically a segmented centre rail with segments only live under the tram. There is also a high frequency induction system from Bombardier.

I have acquired Hornby and Trix three rail track. Hornby track is lovely stuff but is no good for three rail automation as the running rails are not insulated from each other. Trix twin however has insulated running rails. So far my early three rail conversions run on both types of track.

I am working on a layout which will be three rail using Peco track. Peco supply a third rail and fittings to be used on the edge or centre as required.

I am working to OO 1/76 scale which means 16.5 mm represents nearer 4' than standard gauge. As the local long defunct tram system was to 4' gauge my whatif layout has a certain local realism.

However, before this occurs I really need to make a decent centre collector for the UE chassis. Still work in progress but I have a few more ideas to try out yet.



____________________
David.
One day I might finish something................. find out if I do at my own paid for site (under construction)
http://www.picsntech.co.uk
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