I try to stay out of the rain unless it's a race day, becuasde if you want your buggy you be running in top condition for a long time and you run in the rain your gonna need to do some extra maintence after your done running. Going through the drivline nmaking sure everything is well lubed, and putting some oil on mo0st of the metal parts and joints to keep rust from forming (unless its ano aluminum, then just spray the dirt off with some denatured alchohal, and ur done with that piece). Also im assuming were not talking about pouring rain that is an easy way to ruin radio equipment mainly servoes becuase your reciever is preatty well protected in its box, and although I've never actually heard of anyones transmitter being ruined by getting wet I wouldn't be surpirsed if it happend