RE: How can I slow the EMAX 25% to 50% ?
Dunno why a Savage wouldn't still be a good option for him, assuming he'll be using either truck only with your supervision!!
It would be very easy to limit the throttle servo to limit speed like the other guy said, and if you wan't to make it flip-proof, pick up one of the AE MGT tanks that has that cool double-pickup!!
Not that I'd ever suggest anyone NOT buy another truck!!
Dean