A Motorcycle on the Jenny Craig program is not healthy.
Jenny Craig may be positive for weight loss in humans, but it can be very bad for a motorcycle long term. Now we are not talking about voluntary weight loss (removing engine guards, chrome, swapping a stock exhaust for a lighter aftermarket one etc) but built in weight loss from the factory. Typical Steel Frame:
There are reasons motorcycle A weights less than motorcycle B, that weight was taken from somewhere. Sometimes it can be fine (using a different type of material for the frame over steel) and sometimes it is bad (thinner engine walls, less metal in the frame, hollowing out parts).
Let's take the Suzuki GSX-R750 again from above and by the way I'm not picking on the GSX-R750, it is an amazing motorcycle (maybe even #1 in it's class). And let's use the Honda Rebel 250. OK, I'll give you that one is a sport bike and one is a cruiser, but we are looking at the weight more than anything.
The GSX-R weights in at: 166kg (and produces 141hp)
The Rebel weights in at: 139kg (and produces 18hp)
GSX-R Frame - That just looks TOO LIght!27kg in weight difference from a 250cc to 750cc! So, how do you make a 750cc that light! It isn't that the Rebel 250cc is a heavy bike for it's size, it is light as bikes go. So, where did the weight go? Since I've worked on a new GSX-R750, let me tell you...Combine: Thinner engine side walls, lightest engine internals, hollow bolts, thin plastic, the narrowest gauge wiring possible, thinnest frame thickness possible and you are just scratching the surface. While this engine isn't under stress from the bike's weight, it just won't last as long as it could if the design allowed for more weight tolerance. Of course if the bike weighted more, it wouldn't be the same either, but then if would last longer...
So to conclude: More solid, heavier parts, wires, plastic (etc) with greater weight tolerance will last longer than those made to minimum specifications. It just makes sense.
source TMW
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