Because combustion takes place with each revolution of the crankshaft with a 2-stroke, this format puts out more power than a 4-stroke engine and the power has more instantaneous delivery. This are some reasons why 2-stroke engines have a long history of use on many different types of motorcycles.
A two-stroke engine can theoretically produce twice the amount of power because it fires once every revolution, whereas four-strokes fire once every other revolution. Because of this, it has a higher power-to-weight ratio, making it more desirable for many riders.
The two-stroke engines are quicker to accelerate because they can complete their combustion cycle in almost half the time when compared to a four-stroke engine. Also, they produce a much louder and sharper sound than the four-stroke engine whose sound is suppressed.
You can now see that two-stroke engines have two important advantages over four-stroke engines: They are simpler and lighter, and they produce about twice as much power.
Typically, a 2-stroke engine creates more torque at a higher RPM, while a 4-stroke engine creates a higher torque at a lower RPM. The 4-stroke engine is also much quieter, a 2-stoke engine is significantly louder and has a distinctive, high-pitched “buzzing” sound.
While 4-stroke engines perform well and generally last longer than 2-stroke engines, 2-stroke engines are lighter and faster than 4-stroke engines.
Four-stroking is an undesirable operating condition of two-stroke engines, where they instead begin to fire every four strokes, rather than every two strokes. This firing is uneven, noisy and may even damage the engine if allowed to continue unabated.
While a 2-stroke will never offer the torque of a 4-stroke, they come close enough for most weekend riders. Not only that, but they're lighter and tend to be easier to handle, which makes them great for beginners. In addition, 2-stroke bikes require less maintenance than most 4-strokes, saving you time and money.
Four-stroke engines are more efficient due to less demand for fuel. Fuel is consumed once every four strokes versus two. Four-stroke engines are better for the environment due to reduced emissions. A two-stroke engine releases burnt oil into the air in addition to the exhaust produced.
The only reason for this motor not existing anymore is 'POLLUTION'. A 2-stroke engine relies on the fuel and oil (2T-oil) mixture for lubrication and the air-fuel charge is what that combusts in the combustion chamber. The lubricating oil also combusts with the charge hence producing thick white smoke.
Unsourced material may be challenged and removed. The Yamaha RX-135 (also popularly known under the name RX-King, RX-K, RXT, or simply RX in Southeast Asia, especially India, Indonesia, & the Philippines) is a two-stroke engine motorcycle produced by Yamaha since the 1990's.
2 stroke engines are lighter and more compact than 4 stroke engines, which makes them well-suited for use in small, agile motorcycles like enduro bikes. 2 stroke engines produce more power per unit of displacement than 4 stroke engines, which means they can deliver more power in a smaller, lighter package.
two stroke engines have a tendency to 'load up' at idle or low speeds. you rev the engine up a bit to clean it out. if it gets too loaded up the engine stalls.
Lightweight motorcycles with 50cc usually have 2-stroke engines that produce anywhere from 3 to 9 HP.
In simple terms a two-stroke engine fires at every cycle as compared to its counterpart, which fires at every alternate cycle. This means at a given RPM a 2-stroke engine fires twice than the 4-stroke engine, producing not only almost twice the power of a 4-stroke engine but also double the sound of a 4-stroke engine.
Not only had the four-stroke gained power and reliability, but they also became lighter and easier to ride. Fuel injection was an added bonus to the package, along with lower emissions.
Yes - but you don't want to. With the exception of SOME miniature model aircraft engines, 2-strokes are designed to run with an exhaust resonant frequency at a particular rpm.
Because of the smaller and simpler engine design with less moving and electrical parts, 2-strokes can be cheaper in maintenance because you might be able to make your own mechanic decisions and adjustments as needed. There are also fewer parts to get worn out and need replacing.
Comparing a 250 2 stroke to a 450 4 stroke, the 450 has considerably more low-end torque, making it easier to go faster.
A 4-stroke 250cc engine has a top speed of around 80mph, while a 2-stroke has a maximum speed of about 85mph. 2-strokes can generate power quicker than 4-strokes which makes them ideal for getting started on a strong note in competitive races or for accelerating out of corners.
There are no states that have outright banned all two-stroke boat motors. However, several states have implemented strict regulations and restrictions on older two-stroke engines which do not meet modern emission standards. California, for example, has stringent regulations on two-stroke engines.
It's important to get your fuel-to-oil ratios right when mixing two-stroke fuel. Too much oil, and your engine may struggle to start or run, generate carbon buildup on engine internals, blow clouds of smoke and perform poorly in general.
With proper care and maintenance, many 4-stroke outboard engines can last over 3,000 hours before requiring significant repairs or replacement. Some premium models, such as those from Yamaha and Honda, can even reach over 4,000 hours if maintained meticulously.