esc question

[Andrew the man]

ok i always hear you need a special ESC to run mods. well i have a duratrax spike and i have been running a mad science 14T double and it has no effect and im wondering is the spike able to hold mods or what is the deal?

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lifes a bitch first your born and go through one,then 1 causes your death

[SteveP]

The manufacturer will usually specify the limits of the speed control. My position, If it ain't broke, don't fix it!