RMA Status : Check-Out

Your Shipping Address:

Name : Russ Bryant
Email : nankinhobbyypsi@gmail.com
Street Address : 1480 Washtenaw Ave
City : Ypsilanti
State : Michigan
Zip Code : 48197
Country : United States
Phone : (720) 292-6066
Product To Return : MCL2003 MMax Pro 160A ESC
Problem With Product : Started to smoke mid-run in a drag car. Only had a single battery pack ran through it.
Date Purchased : 2020-07-13
Where Purchased : Nankin Hobby


RMA: 1483

HAD RMA ship to address:

Service Department
14754 NE 95th St.
Redmond, WA 98052
USA

Customer Copy:

Name : Russ Bryant
Email : nankinhobbyypsi@gmail.com
Street Address : 1480 Washtenaw Ave
City : Ypsilanti
State : Michigan
Zip Code : 48197
Country : United States
Phone : (720) 292-6066
Product To Return : MCL2003 MMax Pro 160A ESC
Problem With Product : Started to smoke mid-run in a drag car. Only had a single battery pack ran through it.
Date Purchased : 2020-07-13
Where Purchased : Nankin Hobby


RMA: 1483

« Click here to return to the home page

User Note

8/24/2020  Check in

8/25/2020

  • Please advise what motor (brand and turn) the ESC was paired with, and setup details. Thank you.

8/31/2020 Follow up

  • Please advise what motor (brand and turn) the ESC was paired with, and setup details. Thank you!!

9/23/2020 Follow up

  • Please advise what motor (brand and turn) the ESC was paired with, and setup details. Thank you!!

9/24/2020 Customer reply

My RMA number is 1483 and I was advised to give detail in what motor I was using with the ESC that is in for warranty. The motor I was using was a 5.0T Trinity drag master motor with no added timing in the motor and no added boost within the ESC.

9/25/2020 Inspection and Communication

  • ESC has MOSFET board completely burnt and damaged. The motor phase A wire was desoldered. (this indicates huge current passing from the motor)
  • We check the ESC data logging, the history shows 4 sessions (1 setup session for seconds, the other 3 sessions of racing for 2 minutes, 2 minutes 14 seconds, and last session for 30 seconds)
  • The data logging shows some important info.
    1. Some passes show extremely low voltage. It was as low as 4.7V. Please see below screenshot. That indicates the motor was drawing extremely high power (a lot more than common drag race setup)
    2. The final session prior the ESC was damaged. There’s one entry that indicates the motor was out of sync and caused huge voltage spike to 10.9V. Please see below screenshot.

      This indicates the motor was the cause of the failure. It can possibly be one of the points listed:
      – motor sensor gap (sensor distance to the magnet)
      – motor shorted
      – motor sensor error
      – gearingThe motor side had the failure that created the huge voltage spike that damaged the ESC.
  • We are very sorry this case was not covered by the factory warranty because it’s not a defect on the ESC. Since this ESC was fairly new, we’d offer this one time courtesy support with 30% off discount for a complete rebuild. The cost after the discount is $70 plus return shipping and handling $8. Please reply if you wish to proceed. Thank you

9/28/2020  Invoice  https://www.paypal.com/invoice/p/#WEHTKUH43HK6TVXW

10/6/2020  Check out, ship via USPS#9400111202555157278966.