5 Lanes Challenge #1

Undulating surface (Tamiya Wave Section Set) - tests clearance and dampers

30° banked curve. Place 2 banks with corners/straights between them. Steeper banking requires more ground clearance.

Lane change section. 3-lane: bridge overpass. 5-lane: flat crossover with steep ramp.

Widened irregular lanes with wash walls (5-lane Japan Cup custom). The effective wall model uses repeated ~15mm lateral bulges over ~150mm run, so the car loses speed through directional wash-wall impacts rather than elevation change.

Steep ~28° uphill climb with about 360mm of effective running-surface rise (5-lane competition section). Stall risk, needs strong torque and enough brake clearance at the crest.

Steep ~28° descent with a mid-slope step (5-lane competition section). The car accelerates downhill, then launches from the step into the receiver.

Spiral ramp - 90° corner pieces on gradually rising supports. Each piece gains ~75mm elevation. Combines cornering with climbing.

Spiral descent - 90° corner pieces on gradually descending supports. Combines cornering with gravity-assisted acceleration.

Jump ramp / washboard - car goes airborne

Vertical lane changer with a 75° peak. The bridge lane climbs an eased three-segment ramp with an effective base breakover of about 25°, reaches roughly 1000mm of running-surface rise, changes lane at the crest, then descends. The taller support frame seen in footage is not used as driving-surface height.