Mini 4WD Ultra-Dash Motor Guide
Ultra-Dash (15307) publishes 24,000-27,500 RPM and 4-5 A. Why official Tamiya races exclude it, what it does to AA cells, and when a club may still allow it.
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Tamiya Mini 4WD Ultra-Dash Motor(15307)
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Description
The Ultra-Dash Motor is a high-power option that pairs strong top speed with enough torque to climb steep slopes without bogging down, making it a well-rounded choice for courses that mix straights and hill sections. It runs on durable carbon brushes for consistent performance over repeated runs.
- Input voltage: 2.4-3.0V
- RPM: 24,000-27,500
- Current consumption: 4-5A
- Compatible chassis: FM-A, Super-II, Super X, Super XX, VS, AR
Its 4-5A current draw is markedly higher than the Power-Dash Motor's (No.317, 2.5-3.3A), which is likely why its chassis compatibility is also narrower, limited to FM-A, Super-II, Super X, Super XX, VS and AR platforms rated for that extra current rather than the near-universal fit of lower-power motors. That same six-chassis list matches Tamiya's Gold Plated Terminal Set (No.237), sold specifically to carry higher current to motors like this one without the resistive losses of the stock terminal plating.
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