I really notice the 920 difference when shifting into 4th.
The 850 is quite strong in the first three gears, but doesn't exactly tear the arms off in fourth.
The 920 leaps forward in 4th much like the 850 in 3rd.
Not sure how much of that is down to the weight reduction and how much is coming from the 920.
I suspect it's about half and half.
Glen
With wide ratios, your bike will always be a bit sluggish as you come up through the gears. For fast acceleration, you need to keep the heavy crank spinning high, but that is probably not what a 920 would do best. With all of these things, the law of diminishing returns applies.
I have not ridden a motorcycle slowly and sensibly in the last 60 years. So I cannot really relate to what you do. It looks good, but if I tried to do it, I would be booked. I hate long straight roads. In a car, they are bad enough. Where I live, I have to drive 80 kilometres before I can find a piece of road which is even moderately interesting.
With your video, can you imagine riding the bike with the motor always spinning between 5,500 RPM and 7,500 RPM while changing rapidly up and down between the 3 higher gears ? It would be a different experience and highly illegal. You would have to be stupid to do it.
I still intend to do some on-board video of my bike on Winton Raceway. It would be impossible to ride it on public roads. I do not think I have ever seen anybody really fang a Commando on Youtube. When I do it, I think you will get a laugh. It is surprisingly quick.