New Jammin crt .5 motor question

[BrianG]

On 2s, using the MM's BEC doesn't matter. The difference in voltage (7.4v vs 6v) is low enough that there is little heat at the current the servo is pulling, especially on a small truck. Actually, UBEC can be LESS efficient on 2s because of the low voltage differential. Anything higher than 2s though, and the switching BEC have a clear advantage.