Kevininsc wrote on 11/23/08 at 19:51:12:...intended use for either bike: Around town short rides with little highway (unless I want to do some camping, etc). I am concerned with the hot weather with the S40 air-cooled engine vs the Vulcans' 500 water cooled. Weight on the Vulcan seemed to be right at the limit of what I want.....
You didn't mention your size. I'm 5'9". The Savage is 4.5" shorter between the axles and 90 pounds lighter. Back when they were allowed in California I sat on a Vulcan 500 and it was noticibly larger, a hair larger and heavier than I was comfortable with tho' I probably would have gotten used to it. But why should I have to "get used to" when the Savage fits me perfectly? But that's me.
The Kaw has two cylinders, higher compression, revs higher, a six speed trans, and a far greater top speed, DUH!! My Savage will run up to 75 faster than the vast majority of cages, will hit 85 a bit easier than I need, can get me a speeding ticket anywhere in the U.S. I don't need to be able to do 100, 120, 160 or whatever mph. I ride city and I DO need to get to speed asap. 0 to 35 or 40 mph is what I use. Given that torque is what accelerate you, given that with all other factors equal a single gives the greatest torque, I'll believe a stock 500cc twin will beat me to 40 mph when one does.
Little highway? Pffft -- not a problem! I did Los Angeles to Holbrook AZ, 570 miles, about 12 hours with stops, neither I nor the bike were tired. Next evening, in Amarillo TX, the bike was still fresh as a daisy, but I was beginning to feel the strain.
Cooling? Lots of Savages in the SouthWest deserts. Again not a problem unless you want to sit idling in stop and stop and inch foreward traffic -- I don't do that! Personally I rather not have corrosive liquids in or around my bike, and I don't need the added complexity of liquid coolling. May be forced into it eventuallty as they can tune to tighter smog specs with liquid cooling as the temperature can remain in a much smaller range.
Bottom line: Either bike will do what you ask. Both are good. What matters is how comfortable you are on the bike. Any attention you give to the bike is taken away from attention given to the environment -- and a lapse of attention to what is happening around you can be fatal.