safe to run a 1717 on 4S in a truggy? pics included

[nuz69]

What speed your truck is geared for ? My truggy geared for 39mph on 6S 2950mAh with the CC 1520/1Y do 11-12min under race conditions. Try maybe a lower gearing if you want get the 20 minutes... Set timing to 0 and punch 70-80% (enough for racing).