It's much the same as 1/10 in that water sealing will be needed in order to run in the wet. I have to admit, this is the biggest downside of electric. Though, with off-road, unless it is raining at the time, or there is standing water, you shouldn't have any problems running it anyway, perhaps a good idea would be to fit lexan shields in front of the ESC and motor, this will stop the worst mud and stuff from being flung in, but still allows airflow. Even so, it is not ideal.
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