彈弓鬆緊 is controlled by the clutch spring preload. Engine performance is affected by clutch engagement timing. Our aim for engine run-in is to make sure the inner metal parts of the engine are properly worn. Engine temperature will rise very high if engine is not properly run in and the clutch engagement time is set at high rpm. Because metals (Piston, sleeve, conrod, etc) inside the engine do not run smoothly, tremendous friction need to be overcomed to reach higher rpm. Metal parts work within a certain temperature range. Running higher than that temperature range will render the metal parts to break.
Engine performance is affected by clutch spring preload which is also affected by the sping hardness. It is uselss to give you the spring preload figure without knowing the engine and the clutch spring.
In general, I set the clutch spring preload to 0.5mm for engine run-in to make sure the clutch will engage. If the clutch does not engage when the engine is tuned right, something must be wrong with the clutch. |
