This is not a thread for finger pointing or he said, she said just a heads up of a statement that Castle have released which I thought some would want to know as they own the ESC's. 
Link: https://home.castlecreations.com/bl...3YpTNQMdko6Vq-889yU8seDM7QmyZKNaZaj4cWys2VJCk
Quote the main part;
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It has come to our attention that a limited number of Mamba XLX2 ESCs have experienced a failure upon plug in or while running. Most users report no problems with the XLX2 but after considerable investigation and root cause analysis, we would like to share the following information.
MOTOR ADVISORY APPLIES TO:
MAMBA XLX2 8S, 33.6V ESC, 20A PEAK BEC 1/5 SCALE ESC (Part Number: 010-0167-00)
MAMBA MONSTER X8S , 33.6V ESC, 8A PEAK BEC 1/6TH SCALE ESC (Part Number: 010-0165-00)
At this time, Castle is advising to immediately discontinue use of Delta wound motors and any motors that are 2000Kv or higher.
Three phase motors come in two common wiring patterns, Delta (D-wind) and Wye (Y-wind). Each pattern has its own power characteristics and Castle motors have a Y-wind design. Our current data suggests that D-wind motors, especially larger motors (40mm x 80mm or longer and 56mm diameter or larger) and any motors that are 2000Kv or higher are not currently suitable for operation with the Mamba XLX2 or Mamba Monster X8S. Running these motors can result in abnormal operation and may lead to premature ESC and/or motor failure.
If you are unsure whether the motor you are running or intending to run is a D-wind, please contact the motor manufacturer.
Castle is working on a firmware update that will allow the use of D-wind motors and motors greater than 2000kv. Once released, all XLX2 and Monster X 8s ESCs can be updated via the Castle Link USB programmer or B-LINK Bluetooth™ adapter to the new firmware. The estimated availability for this firmware is the end of January 2021.
MANUFACTURING AND ASSEMBLY ADVISORY APPLIES TO:
MAMBA XLX2 8S, 33.6V ESC, 20A PEAK BEC 1/5 SCALE ESC (Part Number: 010-0167-00)
A small number of XLX2 units from the first production build could experience an internal hardware failure. Busbars that are housed within the Mamba XLX2 circuitry may, in limited circumstances, be misaligned and cause a malfunction to occur during the very first use of the ESC, whereby the ESC may beep and then stop responding.
Anyone experiencing this type of failure is encouraged to contact Castle for a warranty service. The manufacturing lot codes of this build are C27255, C27711, and C27964. This information is contained on the label adhered to the wires on the ESC and on the outside of the product box. Note that this issue has been addressed in subsequent manufacturing runs.
If you would like to have your ESC inspected and tested for this issue, please submit an SA2021-1 RETURN FORM and ship the ESC to Castle Creations, 540 N. Rogers Rd. Olathe, KS 66062. If it is determined that the unit exhibits this problem, it will be replaced with a new unit."
"
Link: https://home.castlecreations.com/bl...3YpTNQMdko6Vq-889yU8seDM7QmyZKNaZaj4cWys2VJCk
Quote the main part;
"
It has come to our attention that a limited number of Mamba XLX2 ESCs have experienced a failure upon plug in or while running. Most users report no problems with the XLX2 but after considerable investigation and root cause analysis, we would like to share the following information.
MOTOR ADVISORY APPLIES TO:
MAMBA XLX2 8S, 33.6V ESC, 20A PEAK BEC 1/5 SCALE ESC (Part Number: 010-0167-00)
MAMBA MONSTER X8S , 33.6V ESC, 8A PEAK BEC 1/6TH SCALE ESC (Part Number: 010-0165-00)
At this time, Castle is advising to immediately discontinue use of Delta wound motors and any motors that are 2000Kv or higher.
Three phase motors come in two common wiring patterns, Delta (D-wind) and Wye (Y-wind). Each pattern has its own power characteristics and Castle motors have a Y-wind design. Our current data suggests that D-wind motors, especially larger motors (40mm x 80mm or longer and 56mm diameter or larger) and any motors that are 2000Kv or higher are not currently suitable for operation with the Mamba XLX2 or Mamba Monster X8S. Running these motors can result in abnormal operation and may lead to premature ESC and/or motor failure.
If you are unsure whether the motor you are running or intending to run is a D-wind, please contact the motor manufacturer.
Castle is working on a firmware update that will allow the use of D-wind motors and motors greater than 2000kv. Once released, all XLX2 and Monster X 8s ESCs can be updated via the Castle Link USB programmer or B-LINK Bluetooth™ adapter to the new firmware. The estimated availability for this firmware is the end of January 2021.
MANUFACTURING AND ASSEMBLY ADVISORY APPLIES TO:
MAMBA XLX2 8S, 33.6V ESC, 20A PEAK BEC 1/5 SCALE ESC (Part Number: 010-0167-00)
A small number of XLX2 units from the first production build could experience an internal hardware failure. Busbars that are housed within the Mamba XLX2 circuitry may, in limited circumstances, be misaligned and cause a malfunction to occur during the very first use of the ESC, whereby the ESC may beep and then stop responding.
Anyone experiencing this type of failure is encouraged to contact Castle for a warranty service. The manufacturing lot codes of this build are C27255, C27711, and C27964. This information is contained on the label adhered to the wires on the ESC and on the outside of the product box. Note that this issue has been addressed in subsequent manufacturing runs.
If you would like to have your ESC inspected and tested for this issue, please submit an SA2021-1 RETURN FORM and ship the ESC to Castle Creations, 540 N. Rogers Rd. Olathe, KS 66062. If it is determined that the unit exhibits this problem, it will be replaced with a new unit."
"
) on 6S & 8S. No heat issues, no extreme ripple issues, and now I'm worried I've already done something that is a ticking bomb. I've had them say, it'll run any brushless motor. Now I have to wait for a month for an update
. 
