(sigh) Why never mind? I thought we were discussing the science and physics of motorcycling. The point I am trying to make is based on the scientific concept of leverage. It is also based on personal experience that confirmed statements I read in MCN and other MC magazines in my early years of riding.
One test I run on any bike to determine how it will probably handle low speeds is to stand flat footed over the bike, barely touch the handlebar, press my left thigh into the seat and see how easily it comes off it's side stand. The easier it comes up, the lower it's center of mass and the easier it will be to ride in a parking lot and almost anywhere at the posted speed limit. If I need to strain to get the bike up, then I'm done and have no interest in that bike.
Of course, this is also a test of how easy it will be to ride at high speeds in the twistys. That is to say, a heavy bike that easily lifts in that test will be a hand full in the twistys as it will not as easily initiate a high speed turn.
So, what I am saying is it depends on your intended use for the bike. If you will be spending most of your time at low speeds, like me, then a heavy bike with a low center of mass will handle fine (as long as it does not have to much rake and trail *). If a bike is both heavy and has a high center of mass, then my thigh lift test will show that and it will be difficult to ride at any speed and a real hazard at parking lot speeds. Been there, got the scars and the broken collar bone.
If you want to spend most of your time challanging the Dragon, then a high centered sport bike is best but then , as you say, you really need to avoid any bike that is to heavy for you to operate at low speeds also.
I am sorry if you think I am just blowing smoke on this issue, or if you think I do not understand the needs of someone who is physically challanged. I have been just trying to share a bit of hard learned information that, upon reflection, fits with my book learning on the physics of leverage. That's all I ever try to do on DRA, share the hard learned lessons that came slowly as I broke seven bones in four motorcycle accidents, during my first ten years of riding. That and to help new riders avoid unnecessary expense and technological dead ends as they build their rides.
* But that's an issue for another time. The Ridley was a B*&#! in a parking lot, due to it's geometry, even though it wasn't particularly heavy. A heavy bike with the same rake and trail numbers would be impossible for me to ride, other than in a straight line, or on a freeway.
If the membership feels I am wasting your time, I will cease posting these long replies. It doesn't earn me any money do do this and I don't lke typing with two fingers. I'd rather be riding or playing guitar anyhow.
http://mckennaguitars.blogspot.com/ Don