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slowly slowly or building bridges

rovex

Entry posted by rovex

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track laying has recommenced. I don't know if I've mentioned this before but following an expansion problem and an experimental track fixing method I lifted all the track on my layout and decided to start again.

 

This time 4mm cork underlay has been glued down with copious amounts of undiluted PVA glue. On top of this the track plan has been pasted. It was printed out on heavy duty printer paper and then pasted down with wallpaper paste. This should ensure that the track is in the right place. I'm starting in the middle but before the scissor crossings which were such a feature of the original Snow Hill go down, I've decidd to try and make a representation of Great George St Bridge. The photos show the attemprts so far. The cork underlay is cut out and a 20 thou plasticard peice fitted to shape. track chairs are fitted to two pieces of 4mm square plastic strip from evergreen, using a lenght of track to ensure there are in a striaght line. With sleepers attached to each end these are glued down to the 20 thou sheet. Cross timbers are then added and the whole sprayed grey, the timbers picked out and then the sides of the rails painted brick red to represent the rust. All will be suitably weathered once in situ.

 

I am also taking the opportunity to paint the sides of all the rails to represent rust. I only hope my patience lasts.

 

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Now for a question. This time around I intend to wire up as I go along, including the numerous point motors that will be needed, but where to put them. The point motors that is. Obviously they will have to be beneath the track, but do I cut out a small hole and feed a rod up, or cut out a larger whole and fit the point motor directly below the track.

 

If the motors go immediately belowthe point I was thinking as all points are handmade I would fit a plasticard rectangle beneath the tiebar and then fit the point motor to that - I intend to use peco point motors operated using old Hornby passing contact switches (assuming that will work).

 

Do any one have any thoughts, opinions etc?

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rovex

Oh before anyone mentions it, the scissors crossings will be put the correct side of the bridge and not as shown

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rovex

You're worrying me now! Are the motors likely to be too strong for the point or not strong enough - I hope not since I have loads left over from my old layout?

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richbrummitt

I wouldn't use them out of choice, especially not with hand built track. There are ways to dampen and accomodate the aggressive thumping motion of this type (solenoid) of actuator.

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rovex

Thanks

 

without wishing to appear lazy, is there anywhere on RMweb that discusses the likely modifications needed?

 

Dean

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  • RMweb Gold
Mikkel
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Very nice to this moving forward again. Apart from their engineering purposes, the bridge add a lot of atmosphere to the scene  - as do the stairs in the platforms.  It will all  be very special once your superb buildings come up.

 

Will be interested to see where you end up with the point motors. I may be facing the same situation on my next layout.

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