That makes sense. Honda still makes a slightly updated version of the CB100 I have (which was sold in the U.S. only between 1970-72). It is available only in Nigeria.
As it happens, a guy from Nigeria lived in the same apartment building as me for a while. He taught me all sorts of interesting things about tweaking and maintaining my old Honda. He also showed me how to carry a passenger, luggage, and a baby on that tiny bike, which he said is commonplace in Nigeria. I don't plan on trying it, but I am amazed at what that little engine can do. Of course, that's running through a five-speed transmission (you get to 3rd while going through an intersection). But I do think the potential of this size engine could be explored much further than it has been
One major difference between the 99cc engine on my old Honda and the Predator is that the Honda engine has some sort of oil pump/strainer arrangement which filters the oil somewhat. There are strainers inside and outside the crankcase--the outside one is to be cleaned each time you change the oil, which is recommended monthly. The Predator has a simple sump, to my knowledge, and only holds 12 ounces of oil (no clutch or transmission built in, as with the Honda). I plan on changing it on the usual "lawn mower schedule" (once every 25 hours of use). Though I am certainly open to suggestions.