Cooling system: Difference between revisions
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This schematic shows the components of the Ninja 250 cooling system and how they relate to each other. | This schematic shows the components of the Ninja 250 cooling system and how they relate to each other. | ||
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Things to note on this drawing: | Things to note on this drawing: | ||
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1. The radiator cap does more than just keep the coolant inside. It also adds extra pressure to the system, thereby raising the boiling point. Without a radiator cap, the boiling point of a 50:50 coolant and water mix is barely more than that of plain water. But add a typical 15 psi cap and the coolant doesn't boil until 265F. | 1. The radiator cap does more than just keep the coolant inside. It also adds extra pressure to the system, thereby raising the boiling point. Without a radiator cap, the boiling point of a 50:50 coolant and water mix is barely more than that of plain water. But add a typical 15 psi cap and the coolant doesn't boil until 265F. | ||
2. The direction of flow of the coolant is from the upper right hose to the lower left. You can see that the temperature | 2. The direction of flow of the coolant is from the upper right hose to the lower left. You can see that the coolant temperature is significantly lower when it exits the radiator than when it enters. (T equals coolant temperature in these measurements.) | ||
3. The fan comes on when the coolant gets above about 225F. It stays running until the coolant temperature falls back below 205F. | 3. The fan comes on when the coolant gets above about 225F. It stays running until the coolant temperature falls back below 205F. | ||