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Kato Unitrack · N scale · track plans

Kato Unitrack track plans

Five of the twenty-seven example layouts RailMind ships with, each with its board size, its Kato part numbers and quantities, the packs to buy and an approximate US price — the numbers the app computes, not a guess. Every one is proven to close, or to end exactly where it should.

Starter Oval: a plain closed oval of R282 curves and straights. Starter Oval: a plain closed oval of R282 curves and straights.
Starter OvalOval · R28212 pieces · 48 × 30 in · closed · about $30.00
Oval + Passing Siding: an R315 oval with a siding branching off through two #4 turnouts so two trains can pass. Oval + Passing Siding: an R315 oval with a siding branching off through two #4 turnouts so two trains can pass.
Oval + Passing SidingSiding · 2 turnouts · 33 mm24 pieces · 72 × 33 in · closed · about $126.50
Double Oval + Crossover: two concentric mains on the 33 mm center, linked by a double crossover. Double Oval + Crossover: two concentric mains on the 33 mm center, linked by a double crossover.
Double Oval + CrossoverDouble mainline · 33 mm29 pieces · 66 × 36 in · closed · about $145.50
Figure-8: a single line crossing over itself through a 90° crossing. Figure-8: a single line crossing over itself through a 90° crossing.
Figure-8Crossing · 90°21 pieces · 60 × 60 in · closed · about $72.50
Reverse Loop · Small Locos: a tight R216 teardrop return loop off a straight lead through two #4 turnouts. Reverse Loop · Small Locos: a tight R216 teardrop return loop off a straight lead through two #4 turnouts.
Reverse Loop · Small LocosTeardrop · R216 · 2 turnouts17 pieces · 56 × 24 in · 2 open ends · about $107.75

How they close

The plans lean on a handful of facts about Kato's geometry — why eight 45° curves make a circle, why parallel track sits 33 mm apart, why a reverse loop needs two turnouts. They are written up under Geometry: closing a loop, why it won't close, double-track spacing and HO Unitrack basics.

The other twenty-two — Corner Central, the Concrete-Tie Oval, the Roundhouse Fan, Desktop Oval, Lakeshore Fold, two Triple Main plans (three concentric mains tied by double crossovers), Twin Lobes, the Four-Track Stub Yard, the Through Yard, Inside Branch, High Line Junction, Trestle Knot, Reverse Loop · Broad R348, seven HO layouts (four of them Kato's own plans) and the 27-module T-TRAK Club · Show Layout — are in the app, behind the Example layouts button on the Plans sheet, alongside a shelf of nineteen T-TRAK modules.

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