An important point to check if you buy a multi-cylinder used motorcycle.
The start from a traffic light feels jerky. Idle and exhaust sound are unstable.
I think the impression changes quite a bit when you synchronize the carburetors.
At idle, the exhaust sound waves like “vaa-bo-vaa-bo.”
When engaging the clutch with half-slip, there’s an uneasy feeling like it might stall suddenly.
Classic carburetor synchronization issues.
This synchronization adjusts how much the carburetors on a multi-cylinder engine open at idle.
When everything opens to a similar degree, the idle stabilizes and the engine sound becomes smooth.
Conversely, if you keep using it out of sync (misaligned), it produces a clashing, discordant sound and becomes a mechanically poor environment.
Especially, you seem to notice primary reduction gear noise more easily.
Synchronization is important, but so is setting the idle to a smooth engine speed.
I think stable idle feels really nice (*’ω’*)
