See now I can see the point on that, but I would rather raise the center of gravity then to have the load shift while in a turn and rock the bike.fasterbusa said:While they are cool, something to remember is that backpacks are not recommended for use by motorcycle riders by any of the various safety groups.
They want bike riders to use, if they have to, tank bags.
The reason is because a backpack raises the center of gravity by quite a bit and this will affect the handling and safety of the bike.
To these safety orgs, this is unacceptable.
Not sure I buy into the "centre of gravity" debate. How is having a guy wear a backpack any different to putting a bigger, heavier rider on the same bike? Either way, the centre of gravity is raised, so what makes one safer than the other???fasterbusa said:...a backpack raises the center of gravity by quite a bit and this will affect the handling and safety of the bike...
Thanks for the explanation. :thumb:fasterbusa said:In general terms, the CG of a bike with no rider is close to 6 to 10 inches below and a little foreward of the seat area.
When a person sits on a bike, there CG is located low down, as in their backside when seated.
This is because most males have the bulk of there weight centered around their navel area or a little lower.
A tall rider normally has longer legs, while the torso is still relatively the same length as a rider of normal heights. This means that the CG is still relatively centered around the same place.
Now consider a rider carrying a backpack. Neglect the wind forces.
A rider siting on the bike carrying a 50 pound backpack has now raised the CG considerably because the 50 pound pack is small and centers the weight in a small area. This centering directly opposes the normal CG and raises it approximately 1 to 2 feet.
The CG will be affected less if the rider is heavy, but if the rider is light, it will affect the CG by a greater degree.
The CG is now physically raised or higher from the ground than it was before the addition of the backpack. This effect is very noticable in a turn. In a straight line, the effect is minimal if one only worries about the effect of gravity.
However, in a wind, the higher CG can have a negative effect on the rider as the higher CG can act as a sway amplifier, increasing the leaning effects of the rider.