VTA (Oval & On-Road)

Class RulesVTAEffective Sep 4, 2025· Updated 1 month ago

Summary of recent changes

Official ThunderDome rulebook (rev 2025-09-04). Discipline: Oval & On-Road.

Spec sheet

Governing

Notes: 5mm min ride height; SXT Black only

Motor & ESC

Motor type: Spec brushless
Motor turn: 25.5T
Spec motor: Gravity GRC2025 Scale Spec 25.5
ESC: Blinky / zero-timing (2S ROAR approved)
Blinky mode: zero_blinky
Max motor timing: 30° (fixed)

Battery & power

Battery chemistry: LiPo
Cells: 2S
Max voltage: 8.40V
Hard case: Required

Tires

Spec tire: Protoform VTA / Gravity G-Spec VTA / HPI Vintage Racing

1.Chassis Spec

Four Wheel Drive 1/10th scale touring car. Mid motor or rear motor.

2.Weight Spec

Minimum 1400g in race-ready trim.

3.ESC

Any 2s ESC that is ROAR approved and running in ROAR approved "Blinky" spec software.

4.Battery Spec

ROAR approved 2 cell Lipo hard cased. MAX temp 90F at tech table. 8.40 MAX VOLTAGE.

5.Tire and Wheel Spec

Protoform VTA tires (rear 31mm #10139-00 / front 26mm #10140-00) / Gravity G-Spec VTA tires #GRC146 / HPI Vintage Racing tires. Sidewall glueing allowed.

Version history

v1Published.

Jul 28, 2026

v1Pre-official seed content (archived before load)

Aug 3, 2026

VTA (Oval & On-Road)

Spec sheet

1.Chassis Spec

2.Weight Spec

3.ESC

4.Battery Spec

5.Tire and Wheel Spec

Version history

6.Motor Spec

7.Body Spec

8.Ride Height Spec

9.Race Spec

10.Tire Sauce