Radio Controlled nitro Truggies are a cross between a Truck and a Buggy. Nitro Truggies use a single servo for throttle and brake control. The rotation of the servo in one direction will cause the throttle on the carburetor to open. This provides more air and fuel mixture to the internal engine. On an rc nitro truggy when the rotation of the servo is in the other directions, this causes torque to be applied to a cam and linkage. This then causes friction with the braking material. The brake on an rc nitro truggy is more commonly located on the driveshaft and applies stopping pressure to the driven wheels only.
In some rc nitro truggies there may also be an additional servo which is used to control a transmission box. This enables the vehicle to drive in reverse. Engine sizes in a nitro buggy range between.18 to .56 cubic inches. Engine size is also related to the class of vehicle. 1/8 scale vehicles normally use .21 to .56 cubic inch engines and 1/10 scale cars are usually equipped with .12 to .18 cubic inch engines. Saying this, there are some exceptions with some models coming with unusually large engines as standard. Maximum power can be achieved at medium to high speeds.
Nitro truggies can be refueled in a few seconds. They can be run continuously with no need to let the engine cool down as long as they are tuned correctly. The sound and smell of a nitro car is it’s main selling point but they do require more cleaning and regular maintenance.