It is not the motor you need to worry about. The motor is going to try to draw as many amps as it needs. The esc will be over loaded. This will cause more heat and stress until the smoke rolls.
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That controller probably wouldn't even work well in a car application, and that is besides the point that it won't handle the 8s without being completely damaged.
SH Z-Car, Custom Crawler, 8s Savage, 12s XTM XLB 1/7 buggy, 4wd 4-link rear/IFS Pro4 truck, Custom Hyper 10 Short Course, Belt-Drive Mammoth ST 1/8 truggy, 4s 17.5 MM Pro HPI Blitz
i run a schulze 12.97fe controller w/ my Hacker b50 8L and it works great in my TXT-1. just a note; i run a fan over all my controllers - brushed or brushless.