Last run of the season at Cow Lake, near Rocky Mountain House, AB... Death of the stock motor on 4S (overloaded/undercooled) with the AquaCraft GrimRacer 45x68 copper-beryllium 2-blade prop. She topped out at 42ish MPH. Will be back next spring with the Leopard 2200 on 5S Lipo with a 3-blade prop (hoping to get nearly 60MPH)...!