What happens when a prop is too low on RPM?
A prop that is easier to turn requires less effort from the motor, so the motor is able to reach higher RPM. If a motor is running too low on RPM, then the boat is under-propped, and is over-propped if the RPM is too high.
What causes motor to bog down at high RPM?
What happens is that the gas that is in the carb evaporates and leaves behind a film, and with oil mixed in it it can be even worse than strait gas. This film biulds on the walls of your carbs jets and orafhices very similar to blood vessle restriction in oud bodies from cholesterol and fats.
Which is better a two stroke or a four stroke engine?
The lubrication of the piston rings in four-stroke engines is better than that in two-stroke engines. The specific lubricating oil consumption of a two-stroke engine instead is lower than that of a four-stroke engine. Low-speed engines are generally built with horizontal cylinders.
How much should I change the pitch of my motor?
Adjusting the pitch by 1 inch adjusts the motor’s WOT RPM by 150-200 RPM. If the motor’s RPM is at the top end of or above the manufacturer’s RPM range, the boat is under-propped.
What happens is that the gas that is in the carb evaporates and leaves behind a film, and with oil mixed in it it can be even worse than strait gas. This film biulds on the walls of your carbs jets and orafhices very similar to blood vessle restriction in oud bodies from cholesterol and fats.
What does it mean when your motorcycle has a flat spot?
Ride motorcycle in various rpm ranges, and then try to maintain a consistent 40- to 50-mph. If the engine has a flat spot, or is popping/sneezing in the air cleaner, it can indicate a lean condition. If you notice stumbling or sputtering, it can indicate a rich condition.
What is the low rpm jet on a carb?
Low rpm operation is controlled by the intermediate jet (#11). If sneezing or popping is experienced below approximately 3000 rpm’s the intermediate jet must be replaced with a larger sized (richer) jet.