I’m asking about motorcycles specifically but it goes for all vehicles. Why/How in a v-twin engine if CC’s are very close and the same manufacturer exhaust is installed on each bike the sound is different? Is this done with timing or are there other internal parts that cause this?
In: Engineering
Length, diameter, turns, catalytic converters, mufflers, cylinders, RPMs, displacement. There are many many things that make them sound difference. A good example is a little gas powered RC car is very high pitched because it has high RPMs, small volume, and short exhaust where as a new F150 eco boost you probably can barely hear because it’s been muffled and the gas coming from the engine has more time and devices to “become quiet”.
Depends on the set up, you could have a 1.0 car with a straight through exhaust system, it will sound loud and poor but it will be loud which is the main objective but won’t really see any gains as such.
V-twins usually have a longer stroke than inline engines which affects exhaust gas velocity and pulse. But valve timings, overlap, etc will also have an influence on the pitch.
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