Thanks to Those Who Take the Time
The Rc car i've been using died due to its Esc being burnt out by a 3S lipo battery, and i want to ultimately replace it with something. If i were to be creating an electronic speed controller (ESC) for a specific motor. Whereas specs such as the max amount of current under load you can put into the motor without having it meltdown, do not appear on the motor and are not listed elsewhere cause concern. this keeps me in a certain situation where i am stumped on planning the ESC. On the other hand my understanding on how the ESC works with controlling the power is missing a few things.
For my motor situation, the motor itself is rated at 4000Kv (rpm per volt), i am assuming that is the unloaded max speed it will go. i am also under the impression it will eventually get really hot, and burn up if i continue to have it operate for a prolonged period of time at that rate. I do not what that to happen, but i want to be able to have the ability to go just as fast as the stock ESC, and not have it burn out the motor or ESC while under load. To do that i do not have a clear understanding. Im thinking i need to find max amount of current it will take without burning under load. in order to be able to program the ESC and plan the hardware to fit the specific motor. Is that True, is there a different way i should be looking at this?
For the ESC Issue, its unclear to me what causes it to fry. if it cannot resist the load to the motor to have it operate at a safe temp will it fry certain parts as my old one did? where does the hardware come into play to prevent this? How do i make the ESC to be able to manage a 2S lipo that has 7.4v, and a 3S Lipo that has 11.1v battery without burning up and be able to keep the motor at a safe temp. With features of a forward, reverse, a BEC for Servos and etc, a over heat failsafe if ran too long, a low voltage cut off to save batteries, and control acceleration? That being said what do you think would be some other things i would need to consider?
To conclude do i need to find the "max amount of current under load" in order to keep my motor safe, what else am i missing? When a ESC fries what causes it and how could i prevent it? How should i be viewing its overall programming process and hardware operation of controlling current along with other features to Then optimize speed and avoid burning up itself and the motor.
Here is some info from the HPI Wesbite about the motor
"Upgrade to a zero-maintenance brushless Flux Vektor 4000Kv motor for the >ultimate in performance and ease of use! The Flux Vektor 4000Kv brushless motor >is standard equipment in the Savage XS Flux, making it the perfect partner for >any off-road vehicle for fun running. It can handle 7.4 volt (2S) or 11.1 (3S) >LiPo batteries as well as 7.2v NiMH batteries for a range of possibilities! " >Features: - High torque/high temperature neodymium magnet
- Oversized precision sealed bearings
- 3.2mm 1/8" hardened steel shaft
- 4 Pole rotor for more torque
- Triple insulated windings for long life
- Black anodized case
- Easy to Install
- Compatible with any sensorless ESC
-- P.S. if you can point me in the right direction of some useful text or experience that would be also appreciated.