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Discussion Starter #1
I have looked at the Kato HO track list and got a headache. Does KATO make a 18 radius product? I need to do a 180 degree turn on a 40 inch wide piece of plywood. Right now I am planning on mating Atlas code 83 to the KATO unitrack that I will be using on the rest of the layout.
 

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Discussion Starter #3
You came to the same conclusion I did. KATO just isn't into HO like they are in N scale, too bad.
 

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I'd like to try some Kato too but disappointed they'd don't have any 30"+ straights. A lot of connections to me is bad.
 

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2-260430mm (16 7/8") Radius 22.5º Curve Track [4 pcs]$13.50
2-270490mm (19 1/4") Radius 22.5º Curve Track [4 pcs]$13.50
This seems to be as close as they come.
If you use a section of 19-14" on both sides as an easement (which you need anyway), and then use the 16-7/8 for the remainder of the 180,
you might come out pretty close to just right. I think this is a fairly common practice.Just my suggestion. (y)
 

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Discussion Starter #6
It is your conclusion that 19 1/4 is the Radius? I might be able to make my 40" into 41 1/2". The GE Tier 4 diesels need minimum of 18". I wonder what the 22.5 Curve track refers to.
 

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It's not a conclusion, it's a conversion. Those are the closest English measurements to those metric ones (there are 25.4mm to the inch). The 22.5 is degrees of arc, where 360 degrees is a full circle, so 22.5 degrees is 1/16 of a full circle... again, a pretty common length for sectional curve pieces.
 

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22.5 is the degrees of arc, takes 4 pieces for 90 degrees, 8 sections for a half circle.
 

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:D
 

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Try it out on one the computer layout software packages. If you can find the be that has Kato ho. Maybe someone has a suggestion. I'm a little out of the loop on current.
 

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I have the Kato #270 (19 1/4" radius) and Kato #210 (21 3/8" radius) on my modified "MR Black River Junction" layout, which fits on a 4x8 table.

The track "fits" the table easily and works fine for me.
 

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Use Anyrail. It has a full library of Kato track in both HO and N. SCARM wasn't a bad proposition when it was free, but now that it's "pay to play", there are much better options.
 
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