The Mini Moto is a small version of the World Super Bikes that riders like Carl Fogarty and Valentino Rossi use. The Mini Moto comes with either an air-cooled or water-cooled two-stroke engine that can go up to 60Mph, depending on the model. But do you know much about your mini moto? In this part, I'll talk about the parts that make these speeds possible and how they work.
The Engine with Two Strokes
The two-stroke engine has a higher power-to-weight ratio than the four-stroke engine. The piston, the rod, and the crank are the three moving parts of a two-stroke engine. The piston acts like a valve, opening and closing the intake and exhaust ports on the cylinder walls. In a four-stroke engine, the piston only fires every other time it moves. In a two-stroke engine, however, the piston fires every time it reaches the top of its travel. This means that a two-stroke engine takes twice as long to make power as a four-stroke engine, because the engine doesn't coast during passive cycles. This is the main reason why a two-stroke engine can rev faster and make more power than a four-stroke engine of the same size.
Fuel
The two-stroke engine needs a mix of gasoline and two-stroke oil to work. This is done so that the engine stays oiled while it is running.
Fuel problems are the cause of 99 percent of all problems getting a car to start. These can be caused by bad or old fuel or fuel that wasn't mixed right (please see mixing chart). Don't use fuels with alcohol in them because they can make your bike run "lean." Be aware that some racing fuels have alcohol in them and should be avoided... We suggest that you use regular gas for a garage and good oil for a two-stroke engine.
If the mixture is too lean, which means there isn't enough two-stroke oil, it can hurt the engine of your mini-moto because the moving parts won't be well-oiled. This could stop the engine from working. But if the mixture is too rich, it can choke the engine, which can hurt its performance and make it hard to start. If your mini-moto is running too richly, you'll see white smoke coming out of the exhaust and it won't go as fast as it should. During the "run-in" period, the engine needs to be lubricated with a rich mixture (25:1). During this time, the engine may not run as well as it should. The pocket bike might run slower and pick up speed more slowly, but when you switch to a 50:1 mixture, you'll really notice a difference. The mixture with less fuel starts to burn faster and with more force in the combustion chamber than the mixture with more fuel. This means the engine will rev faster, giving it more power and speed.
We suggest that you "run in" your mini moto with a fuel mixture of 25:1, and then use a mixture of 50:1 after that.
'Running in'
For the first three or four tanks of gas, you should "break in" your mini-moto. During this time, we suggest that you use a 25:1 fuel mix. This refers to a mixture of 25 parts gasoline and 1 part two-stroke oil. During the "running-in" period, don't rev the engine all the way up, as this can hurt the engine. During the "running-in" period, the moving parts will get oiled up and the clutch and brakes will "bed in." After running the minimoto for 3–4 tanks on this fuel mixture, check the chain and tighten it as needed, check the tyre pressure, and tighten the bolts on the brakes, forks, and wheels. You may also need to change how the throttle is set to deal with the higher revs that happen when you switch to a leaner fuel mix. Now, the bike should be ready for a 50:1 fuel mix.
