Bridge radii question

[Hathaway Browne]

I'm thinking of adding a dual line curved bridge to my layout (HO) and have found that Kibri make one that looks about right, but I can't figure out what radius it is.

The site (and other English retailers) list it only as either "Radius 1" or "Radius 2"
Any clues as to what that is?

Here's the official product site (in German):

Rad 1
http://rire-modelle.de/neu/index.ph...facturer_id=0&option=com_virtuemart&Itemid=15

Rad 2
http://rire-modelle.de/neu/index.ph...facturer_id=0&option=com_virtuemart&Itemid=15

Judging by the pictures one is smoother than the other, but I just want to make sure I'm not going to order one that's too sharp.

Thanks in advance!

 

[Selector]

Each shows the radius in millimeters. Divide that figure by 25.4 (which is the number of mm/inch) and you get 14" and 16" respectively. You'll almost certainly want the second bridge, but it is quite sharp and probably not going to be terribly useful to you. You should very seriously work a 20-22" curved bridge into a layout if you want any room for future "growth" in terms of adding bigger rolling items.

Lastly, I don't get a strong sense that either bridge is for double track...if I understand you correctly. For the tight curves indicated, you'll need wide separation of the tracks to avoid sideswiping, and I don't see that they allow it.

 

[Hathaway Browne]

Nuts. I was hoping it was going to be 20"+. (Thanks for the reply though). The search continues..

If anyone has any suggestions they'd be most welcome!

 

[AndrewC]

Radius 1, etc is based on Roco Set track. Selector is right, nominally the values are: 1 = 14", 2 = 16", and 3 = 18"