Gas powered RC trucks

If you're into gas powered rc trucks, you know that there are different engines available (two stroke or four stroke), and that the engine you choose is important in determining the ideal mix of cost, power and performance. This article will take a look at basic differences between two stroke and four stroke engines.

Gas powered rc trucks have had two stroke engines for a while. It's referred to by strokes because there are only two strokes to complete a full cycle in a two stroke engine. As the pistons travel the length of the cylinder, fresh air and fuel is drawn from a hole in the crankshaft. When the mix of air and fuel is compressed enough there is an ignition, triggering the second stroke. As the piston is forced downward, the used fuel is released through the exhaust manifold.

Four stroke engines are newer to gas powered rc trucks, and are similar in action to the engines in full sized vehicles. The four stroke engine has a more complex design with more moving parts, including mechanical valves and valve train components that aren't necessary for a two stroke. The payoff for the added complexity of the four stroke engine is smoother power and more efficient fuel management. A four stroke engine will run smoother and idle smoother than a two stroke can.

So what makes the difference between the two for gas powered rc trucks? Think of the two stroke as a screaming banshee and the four stroke as being a little more refined. While the two stroke can deliver more power, the four stroke feels smoother and can offer better fuel economy. Four strokes also typically come with two speed engines to give the driver the advantage of torque and the advantage of higher speed. It's a matter of taste, and money as the four stroke is more expensive, but trading up could be worth it as you get more into the subtleties of your vehicles.