When you pull in the clutch lever on a motorcycle while accelerating, you disengage the connection between the engine and the transmission. This means that power from the engine is no longer transferred to the wheels, allowing you to change gears or shift into neutral.
If you pull in the clutch lever while you're actively twisting the throttle, the engine will continue to rev because the throttle controls the fuel and air mixture going into the engine. With the clutch disengaged, the engine will rev freely, but the power will not be transmitted to the wheels.
So, pulling in the clutch lever while accelerating will not cause the bike to immediately slow down or lose power. It simply separates the engine from the transmission, allowing you to change gears or coast without engine braking. However, if you continue to hold the throttle open while the clutch is disengaged, the engine will rev up without translating that power into forward motion.
It's important to note that engaging the clutch abruptly while the throttle is open can cause the engine to rev up rapidly, which can potentially lead to a loss of control or wheel spin, particularly in low-traction situations. Therefore, it's generally recommended to smoothly and progressively release the throttle while simultaneously disengaging the clutch when slowing down or coming to a stop.