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>>I have to respectfully disagree on a couple of points. Static mast weight is not the issue. The carbon stick reduces the radius of gyration by a factor of almost 4 which reduces pitching moment of the hulls.

What exactly do you mean by that ?

"Static" mast weight (Do you have a thing called dynamic mast weight ?) DOES factor in COMPLETELY in Moment of enertia that is linked to oscillation of a platform.

You got me completely lost on your "radius of gyration" statement. Especially on how a reduction of radius REDUCES the pitching MOMENT of the hulls ?

Pitching MOVEMENT of the hulls maybe ?

Or else RESULTING radius of gyration given some reduction in mast weight ? This of course contradicts your statement of "Static weight is not an issue"

I guess there are some typo's in these statements that result in a very awkward statement otherwise you are completely off the chart with respect to dynamic of bodies.


Wouter




No Typos in this post, quick google on defining moment of inertia :



Definitions of moment of inertia on the Web:

The property of an object associated with its resistance to rotation.It depends on the objects mass and the distribution of mass with respect to the axis of rotation.
fuse.pha.jhu.edu/outreach/kit2/glossary.html


A physical property of a member which helps define rigidity or stiffness and is expressed in inches raised to the fourth power. It is a measure of the resistance to rotation offered by a section's geometry and size.
www.hancockjoist.com/glossary.htm


The rotational analog of mass. The sum of the products of mass and the square of the perpendicular distance to the axis of rotation of each particle in a body rotating about an axis.
unistates.com/rmt/explained/glossary/rmtglossarylmn.html


The amount of force required to spin an object.
www.bowlingfans.com/faq/glossary.shtml


– the mass of a rotating object times the square of the distance to the axis of rotation
www.mhhe.com/physsci/physical/jones/graphics/jones2001phys_s/common/glos_m.htm


A physical property of a member, which helps define strength and deflection characteristics.
www.sentinelbuildings.com/glossary.htm


the rotational analogue of mass, in units of mass*length2 (see rotational kinematics)
people.ucsc.edu/~erowland/glossary.html


Amount of force required to spin an object.
www.jayhawkbowling.com/Pro_s_Corner/Glossary/glossary_new.html


The moment of inertia of the armature is measured about the torque motor's axis of rotation. The ratio of the motor moment of inertia to the damping factor with a zero-impedance power source gives the mechanical time constant of the motor. In direct drive systems, load inertia and damping factor have to be added to the motor inertia and damping factor to determine the mechanical time constant.
www.servomag.com/reference/glossary.htm


The resistance to twisting of any golf club head when that head is impacted off-center.
www.wickedsticks.com/glossary2.htm


the tendency of a body to resist angular acceleration
www.cogsci.princeton.edu/cgi-bin/webwn





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