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Dual gauge diamond crossing


cromptonnut

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No, definitely not RTR :P But perhaps you can convince a certain Baron-of-this-parish to build another one for you ;)

 

I guessed not but there might have been some obscure manufacturer I hadn't come across.

 

Which certain Baron do I need to approach and cross their palm with silver?

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  • 5 weeks later...

I have seen a hand made OO & 009 crossing somewhere on RMWeb so it is feasible. But 009 to Z sounds a real challenge. I have always considered Z as being a bit out-of-this world. You see very little of it exhibited and it looks far too delicate for my mits.

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I have seen a hand made OO & 009 crossing somewhere on RMWeb so it is feasible. But 009 to Z sounds a real challenge. I have always considered Z as being a bit out-of-this world. You see very little of it exhibited and it looks far too delicate for my mits.

 

The Busch Feldbahn stock uses "HO-f" (well that's what it calls itself) but it is to all intents and purposes Z gauge track, as I'm using some Z scale flexi "modified" in some areas of this plan. 

 

Obscure, yes.  Possible, yes.  Beyond my capabilities? Yep :(

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Standard Z gauge uses code 60 rail, OO9 is normally code 80. I had designed my inlaid track(including mixed gauge) for code 100, but I am currently testing out the possibility of using code 75 rail. This slightly closer to code 60 rail. For mixed gauge it really is necessary to use same rail for both gauges, although when they separate you can go back to whatever rail profile you want.

The difficulty in the mixed crossing is the short gap between the Z gauge rails, so probably best to just have dummy rail thee. To cross the 9mm gauge it should be possible to have a short piece of rail between the rails.

Any other type of mixed gauge using 6.5mm and 9mm gauge would probably only be possible by hand building as getting two rails that close together(2.5mm  max, minus thickness of one rail, so 1.5mm, then 0,8mm minimum thickness for base of chair, leaving 0.35mm to hold each rail) . It would be a challenge. For plain track , cutting a second piece of flexi track down middle, and slotting the ends of the sleepers through the gaps in the sleepers on the complete piece of flexi tack. Might just be possible.

 

That reminds me of a mixed gauge crossing I built many years ago, by cutting an old Hornby crossing along the middle of the sleepers on one track, and inserting a short extra length of rail to increase gauge to 32mm . I never actually used it and I have seen it recently in my junk box. If it was possible to cut a Z gauge diamond crossing this way it might be possible. Alternatively cutting down an N gauge crossing might work, and be cheaper.

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Unless I've missed it, no-one has mentioned an angle?

 

You can easily just cut down my street track rail parts to N and Z gauges respectively to do this 40 degree angle diamond, or ditto for a 90 deg crossing and it comes with the prototypical built in check rails all round. I also have both N and Z sleepers to put underneath.

 

Andy

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Here is the Peco N gauge crossing

http://www.peco-uk.com/imageselector/Files/Track-templates/c80/ST-7.pdf

 

I think it would be possible to slice the crossing along one track, and shorten the cut rails, possibly replacing then with dummy rail, as gap is short enough for most locos to cross.

Just print off the template, and cut it up . Easy and cheap to see if it looks OK.

 

Appollogies to Peco for 'cutting' up their nice template

but I think this illustrates it well

mixed-gauge-crossing.jpg

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Knowing that a ready-made item is unlikely, I hadn't specified an angle as I'd have worked with whatever was available!  The idea was that the OO-9 runs alongside the road, the "Z" then crosses the OO-9 and then the road.

 

Send me a PM with your snail mail and I'll drop a crossing in the post. These street track parts are so inexpensive, it's not worth the hassle of ordering a set. Are you using code 55 or 40 on the approach tracks, or both?

 

Andy

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