how old is the little one? my daughter is 5 and she drives my rc18t. you can slow it down by changing to a lower tooth pinion gear or you could make a battery pack out of aa rechargable batterys (4) that would slow it down alot. the best batts would be a pack made with gp1100 cells i got mine for my mini-t from unitedrc.com but not sure if they have rc18t configuration just look for batts made with gp1100 cells and my charger is dynamite vision peak ultra which is about 80 bucks and will charge everything nicad,nimh,li-po