The Tamiya 15307 Mini 4WD Ultra Dash Motor is intended for model racers seeking improved straight-line speed. It offers a combination of high rotational speed and usable torque for short courses and sprint events.
Designed to run between 2.4-3.0V, this motor reaches about 24,000 to 27,500 RPM at an advised torque load of 1.4-1.9 N.m. For reliable drivetrain efficiency fit an 8T Metal & Plastic Pinion Gear Set (Item: 15289) to avoid poor meshing and excess heating that might warp the chassis.
Keep the gear teeth and shaft receiver lightly greased and avoid forcing wheel rotation. The motor will get hot after use, so handle it carefully and remove batteries when the model is stored to prevent leakage and wear.
This Ultra Dash unit is best used in competitive mini-circuit settings where maximum speed matters. Ni-Cd battery packs are frequently advised for consistent output, along with routine checks of gear alignment and mounting.
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