Tzed250
Addicted to ArboristSite
The point is that the rotating mass of the chain is closer to the lengthwise centre off mass, with an outboard clutch/inboard sprocket.
Not a really big deal, but it is there, and notisable......:greenchainsaw:
Personally, I don't care enough to skip the 361 with 8-pin as my main limbing saw, I think.
The smaller ones is mostly for fun, and smaller trees, where such details is more notisable.
Lets think about this for a minute. If the saw has an outboard clutch, the the mass of the clutch is farther away from center.
Lets think of a chainsaw like an airplane, since it can move through space in much the same manner.
It will rotate on three axis. Pitch (nose down or up), Roll (around a line drawn from the bar nose to the rear handle ), and Yaw ( around a line drawn down through the top of the saw)
The intersection of these three axis is the CG of the saw. When weight is placed along one of these axis, it affects movement. When the weight is placed farther from the CG it creates a higher polar moment of inertia. A higher polar moment of inertia slows acceleration around that axis.
An outboard clutch will give a higher polar moment of inertia, thus slowing movement in the roll and yaw axis. it will have no effect in the pitch axis.
Keeping all of the heavy stuff close to the CG is called Mass Centralization, and it makes items that people use with the hands easier to control.
As far as the "gyro" effect, here is a good article at wikipedia explaining spinning masses.
http://en.wikipedia.org/wiki/Precession
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