Kato · N · 9 mm
Kato Unitrack N: track planner from your own stock
31 items with verified geometry. Enter what you have, let the Auto-designer lay ovals, passing loops and stations, and view it in 3D at your table size.
Open the app · Track plan generator
What the Auto-designer gets out of a typical Kato Unitrack N drawer
Double track R315/R282, plus siding and yard
38 pieces · 6.4 m of track
6x 20-010, 4x 20-030, 8x 20-120, 8x 20-110, 3x 20-221, 2x 20-040, 2x 20-020, 3x 20-046, 1x 20-160, 1x 20-070
Station with two platforms on R216
28 pieces · 3.4 m of track
2x 20-221, 4x 20-040, 8x 20-030, 2x 20-220, 8x 20-170, 4x 20-160
Dogbone on R216, plus 2 sidings
24 pieces · 3.1 m of track
12x 20-170, 4x 20-040, 2x 20-221, 2x 20-070, 2x 20-160, 2x 20-046
From the TrackDrawer Guide
- Cork and sound deadening under your track
- Rail joiners and joints: current and alignment
- DC and AC: two-rail and three-rail explained
- The tightest curve radius in N and what it means for your baseboard
- The helix: gaining height in little space
- Sidings and buffer stops: why and where
- Train runs jerkily: dirty track or wheels
- Left, right and symmetrical turnouts explained
- Terminus or through station?
- Passing loop: how two trains pass each other
- An N layout on 100 x 50 cm: what fits?
- Your layout will not close: a gap of a few millimetres
- Shunting puzzle: designing a small yard
- Double oval: two trains at once
- The figure eight: crossing or bridge?
- H0, N, TT or Z: which scale fits your space?
- The dogbone: a long run on a narrow baseboard
- Track spacing: how far apart do two tracks lie?
- Train derails at the turnout: causes and fixes
- The reversing loop: how it works and how to avoid a short circuit
- How to make a track plan in seven steps
Geometry
| Radius | mm | Curve | Angle |
|---|---|---|---|
| R216 | 216 | 20-170 · 20-171 | 45° |
| R249 | 249 | 20-100 · 20-101 | 45° |
| R282 | 282 | 20-110 · 20-111 | 45° |
| R315 | 315 | 20-120 · 20-121 | 45° |
| R348 | 348 | 20-130 | 30° |
| R381 | 381 | 20-140 | 30° |
| R481 | 481 | 20-160 | 15° |
| R718 | 718 | 20-150 | 15° |
Power: 2-rail DC. Roadbed width 25 mm. Parallel spacing 33 / 49.5 mm.
Turnout pattern: 20-220 / 20-221 with counter curve 20-160; compensation 20-040.
11 combinations are recalculated on every build: circles that close, turnouts that land on the parallel spacing.
Items (31)
Straight track
- 20-000 Straight track 248 mm
- 20-010 Straight track 186 mm
- 20-020 Straight track 124 mm
- 20-030 Straight track 64 mm
- 20-040 Straight track 62 mm
- 20-070 Straight track 45,5 mm
Curves
- 20-170 Curved track R216 45°
- 20-171 Curved track R216 15°
- 20-100 Curved track R249 45°
- 20-101 Curved track R249 15°
- 20-110 Curved track R282 45°
- 20-111 Curved track R282 15°
- 20-120 Curved track R315 45°
- 20-121 Curved track R315 15°
- 20-130 Curved track R348 30°
- 20-132 Curved track R348 45°
- 20-140 Curved track R381 30°
- 20-160 Curved track R481 15°
- 20-150 Curved track R718 15°
Turnouts
- 20-220 Turnout #4 left (R481, 15°)
- 20-221 Turnout #4 right (R481, 15°)
- 20-202 Turnout #6 left (R718, 15°)
- 20-203 Turnout #6 right (R718, 15°)
Crossings
- 20-320 Crossing 90°
- 20-300 Crossing 15° left
- 20-301 Crossing 15° right
Flex track
- 21-000 Flex track 808 mm
Feeder tracks
- 20-041 Feeder track 62 mm
End pieces
- 20-046 End piece with buffer stop 62 mm (type A)
- 20-048 End piece with buffer stop 50,5 mm (type C)
- 20-060 End piece with buffer stop 35 mm (type D)
Source: Kato USA productpagina's (katousa.com, o.a. product-98 voor 20-140) en officiële maten/artikelnummers zoals overgenomen door meerdere onafhankelijke vakhandelaren (tonystrains.com, yankeedabbler.com, lombardhobby.com, midwestmodelrr.com, gaugemasterretail.com, railsofsheffield.com, trainworld.com); wisselgeometrie en 33 mm spoorhartafstand bevestigd via trains.ix23.com/kato-unitrack-4-turnout-geometry; roadbed-breedte via gemeten cross-section op jnsforum.com (onderzoek 2026-10-02).
Other systems in N
- Minitrix track planner
- Fleischmann piccolo track planner
- Tomix Fine Track N track planner
- Peco Setrack N track planner
- Arnold N track track planner
TrackDrawer is not affiliated with Gebr. Märklin & Cie. GmbH or any other manufacturer. Item numbers and dimensions are factual product data, with sources cited in the catalogue.