A 600 lb bike can corner and there is no physical reason why it can't corner to the maximum on the street. Where the weight gets you on the track is when you want to change lines in a turn or take a less than perfect line through a turn (i.e. racing). I think a lot of people mistakenly think the Busa' cornering is limited by it's weight but it is the geometry that makes her lumber. The Busa has straight line stability built into it's DNA where sport bikes are "purposefully" unstable like jet fighters. For street riding, even at very high speeds, this is a very good thing. Put simply, a track coach told me a touring bike is made to go straight unless you tell it to turn and a sport bike is made to turn unless you tell it to go straight.
To turn a Busa fast, even on multiple corners in succession, you must master counter steering. The Busa's weight and power mean it is simply not going to turn any other way. I get reducing the weight generally speaking makes all bikes handle subjectively better. But the truth is the way to get the Busa to turn faster is to change the geometry (Notice I said faster not better). There was a guy on here named Tim (aka Earlybird) who used to wiggle his Busa between the dashed white lines on the road at 70+ mph! Not many can do that on a 600! He is a very skilled rider but of average size, not a monster guy and the bike was pretty stock. He just knew how to ask the Busa politely to do things!
I had this epiphany when I climbed aboard my BMW at a hefty 750 lbs and it turns lighter than the Busa. Problem is you have to watch that bike every second. Take your eyes off the road and the bike wanders off, I'm constantly catching it! The Busa is so much easier to ride because it is rock solid stable and only leaves a line when you tell it to. That's Geometry and if the Busa was 200 lbs lighter it would still be a deliberate turner. Lighter wheels, brake discs, and weight loss in general do improve handling but the basic character is baked into the frame.
To turn a Busa fast, even on multiple corners in succession, you must master counter steering. The Busa's weight and power mean it is simply not going to turn any other way. I get reducing the weight generally speaking makes all bikes handle subjectively better. But the truth is the way to get the Busa to turn faster is to change the geometry (Notice I said faster not better). There was a guy on here named Tim (aka Earlybird) who used to wiggle his Busa between the dashed white lines on the road at 70+ mph! Not many can do that on a 600! He is a very skilled rider but of average size, not a monster guy and the bike was pretty stock. He just knew how to ask the Busa politely to do things!
I had this epiphany when I climbed aboard my BMW at a hefty 750 lbs and it turns lighter than the Busa. Problem is you have to watch that bike every second. Take your eyes off the road and the bike wanders off, I'm constantly catching it! The Busa is so much easier to ride because it is rock solid stable and only leaves a line when you tell it to. That's Geometry and if the Busa was 200 lbs lighter it would still be a deliberate turner. Lighter wheels, brake discs, and weight loss in general do improve handling but the basic character is baked into the frame.