This is a慣らし済み (broken-in) Mach Dash Motor Pro for Mini 4WD. If you purchase multiple motors, you will receive a discount of 200 yen per additional item! Example: 2 items purchased together for a total discount of 200 yen, 3 items for a total discount of 400 yen. Broken in on the forward rotation side. RPM: 36983rpm No-load current consumption: 1.0A Measurement conditions: Measured after more than 24 hours after breaking in, with the motor's temperature naturally cooled in a place not exposed to sunlight, and after applying a 3V voltage for approximately 30 seconds. The photos are as follows: First photo: Current value Second photo: RPM Third photo: Image of the motor's end bell Measurements are taken under the above conditions, but please understand that there may be slight variations in the numbers due to the time elapsed since listing, the impact of shipping, and the measurement environment before purchasing. ※ Based on personal experience, I feel that the break-in condition of the Mach Dash has the following tendencies. (Of course, there are individual differences, so this is just a tendency) You can use this as a reference when considering motors other than mine. * 36000-37000rpm (0.8-0.9A is average) Torque remains somewhat, battery consumption is moderate, alkaline batteries also run reasonably well if brakes are not applied, and can be used with nickel-hydrogen batteries in layouts that require sudden braking, or layouts with long distances. * 37000-38000rpm (0.8-1.1A is average) Feels quite fast on flat surfaces, and seems to have a good balance of speed, torque, and heat resistance in 3-lane high-speed layouts. * 38000-40000rpm (0.9-1.2A is average) While flat surfaces become even faster, heat fatigue becomes a concern during continuous running, such as from sudden braking and races. It becomes necessary to manage batteries and, in some cases, to consider cooling the motor. * 40000rpm or more (I think it will be 1.1A or more) Tends to lose torque, so it will be faster in layouts with shallow braking or long flat surfaces. Also, those with a no-load current consumption exceeding 1.5A may have excessive current flowing due to initial defects or failures during use. Also, I do not recommend it because there is a possibility of being suspected of doing something at race venues where experienced people gather, and considering the balance of heat generation and power consumption.