I’m trying to get firm figure on dry and wet weight. When it shows up at Indonesian dealers, I’m have our contact there check it out.
I wonder how they do two different power outputs? I suppose electronic solution would be easiest. Milder ignition-map on 45ps model? With DBW, you can just program it to not open throttle all the way!
Smaller engines typically have higher specific-output than larger ones. It’s based on ratio of valve-curtain area to cylinder volume. As you scale up in size, cylinder volume increases by cube-power (^3), however valve-curtain area only increase by square-power (^2). So larger and larger cylinders are choked more and more due to limited flow through valves.
That’s also how little engines can rev to 19-20K, they can actually flow that much air with same cam-specs. Bigger engines lose VE in high-end and shows dropping torque and power curve.
Compare late-‘80s to early-‘90s 250 inline-4s versus their bigger countreparts. They were getting around 45-bhp. That would be 180-bhp for litre-bike. No litre-bike would get 180-bhp for another 20-years. ZX10R finally got there in 2008. With modern advances in EFI , materials tech and oil, I don’t doubt it can get 60-bhp.
Weight is still concern...