Tip of the day - diamond-crossing in transition curve - video

[Martin Wynne]

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Following a question which came up on the Gauge 0 Guild Zoom meeting yesterday, I have made a short bit of video showing how to put a diamond-crossing through a transition curve. See:

https://flashbackconnect.com/Default.aspx?id=IYiukPimd39vR41GMNFyHA2

p.s. For best image quality, click HD > Original at the bottom-right of the video.

cheers,

Martin.

 

[Derek]

Hello Martin
Sorry this is a little off topic, but only a little. If one is creating a diamond on a transition curve and is doing so manually, are there any 'rules' as to what K can go with a V? Or is it a case of just making sure the green square on the info panel doesn't turn red? By studying the real World and by a staggering coincidence this fits OS map- a V5,K6,V9 - is that something valid or... It looks right, but I haven't tried turning it into a single slip yet.

TIA
Derek

 

[Martin Wynne]

If one is creating a diamond on a transition curve and is doing so manually, are there any 'rules' as to what K can go with a V? Or is it a case of just making sure the green square on the info panel doesn't turn red?

@Derek

Hi Derek,

There are no rules. You use whatever fits.

In Templot there is the rule that the K-crossing angle on both half-diamonds must match. That's purely Templot, the prototype doesn't design K-crossings in two halves.

But the radius in each half can differ if necessary.

The red warning lamp is YOUR setting for a radius warning indication, it's not any external rule, prototype or model. YOU set it to whatever you want it to be:

That setting is template-specific, meaning each template has its own warning level. Typically you would set yourself a smaller radius limit when designing the turnouts in the goods yard than when designing a running-line junction.

Or you might simply ignore it. Templot is a tool for your workshop. YOU use it to create whatever YOU want.

It's been a constant battle of wits to stop folks regarding it as some sort of repository of the one and only truth.

cheers,

Martin.