The zx5 drive train is good but not as good as the x10. (sure someone will bite on that)
but i have never broken a diff gear with the lazer (or the x10), i have 2 both with 4.5r brushless one a standard kit lazer and one a kmc conversion.
i have chewed a few spurs but this will always happen with an exposed spur gear and all of my spur problems have been on the standard car and caused by ickle stones.
i don't want to debate this one better than thi s. it is just interesting to see the opinions out there and to be fair its much more fashion than practical design descisions
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