MMP Start Power

[Lauri]

Thanks Brian, but I think there's more to it. I'm running sensored + CHEAT Touring Car 1:10 scale 5-minute runs. The car only _STARTS_ one time. I'd like to know better how and when the Start Power works.

It is also weird that 17.5T motor with "high" Start Power setting kills the battery but running 5.5T motor with regular touring car ESC works nice. 17.5T kills the battery voltage wise but only uses 1500mAh out of 4500mAh. 5.5T uses 3000mAh out of the same battery. I'm guessing the "killing" by "high" Start Power setting is done by the pulsing current that LiPo can't handle. I'd like to know if additional fast low impedence caps would help in this situation?

At the moment it is a mystery setting for me. I'd like to know more about it or if Patrick doesn't want to go too much into details just let us know when to use which setting. And when not to use.

I tought I had good enough LiPo and use low-power 17.5T 540-size motor ... but "high" setting was still too much.

Start Power --

Start power is the maximum amount of power that the STARTUP algorithm is allowed to apply to the motor PRIOR to detecting that the motor has started (or the position of the rotor.) The higher the start power, usually the quicker the startup algorithm can successfully start the motor, but the more power might be wasted (read "extra motor heat") in starting the motor.

Remember, these are sensorless motors and controllers- - prior to startup the controller doesn't know the position of the rotor, and must "tickle" the rotor to detect rotation and position of the rotor. The higher the power in the "tickle" the quicker rotor position can be detected.