RE: OFFICIAL Team Losi Micro-T thread !!!!!!!!!!!!!!!!!!!!!!!!!!!!
That Kv actually stands for RPM per volt without a load, so at 4.8volts the 10250 is 1,500rpms per volt faster than the 8750. At 4.8v that’s 7,200 RPM faster and at 7.4v it’s 11,100 rpm faster. Another way to look at it is that it's approx. %17 faster without a load but since it also has more torque with a load that %17 is in reality as much as 25 percent faster.