Here's a 'fun' super-nerdy question. :grin: I've been pondering why different engine configurations sound different. And I'm stuck on Inline Triples vs Inline Fours. Some of it's pretty obvious, like how V-twins have their lumpy rumble because of interesting crank angles. And how V-fours sound like a pair of V-twins stuck together (again, crank angles). And then there's the famous WRX/Subaru Boxer sound because the exhaust headers are paired up 'wrong' for proper scavenging. But then we get to the inline triple and inline four. Triumph's marketting material talks up the unique sound of a triple. So do all the magazine writers. But... The piston crank angles are evenly spaced on both engines, unlike the 'lumpy' spacing on most V-twins. So an I3 should sound like a 1/4 slower I4 by all accounts. Supposedly they don't. 3-1 exhaust instead of 4-2-1? Maybe? No idea. Anyone know, or care to discuss?