"Hi Gordy,
I've been reading the interesting attachment by Walter Simbirski. Just a clarification. Walter wrote:
"Now we have some very insightful statements from Aitor about static vs. dynamic rod loading and bending profiles along with the question about how we can achieve maximum acceleration when the applied force/torque is constant... As a simplification the point of maximum load is also the point of maximum line acceleration."
Well, when I wrote about acceleration I was thinking of rod butt acceleration, not line acceleration.
The reason is that thanks to the CA rod butt acceleration can be known, while acceleration of the line remains out of our reach as fly casting instructors; moreover when Bruce says that the goal of a good casting stroke is to have a constant acceleration he is talking about rod butt acceleration as deducted from the CA measurements. Is in this context that there isn't a maximum acceleration of the rod butt on a cast whose smoothness ratio nears 1, since that indicates that acceleration is practically constant.
Regards,
Aitor= "
I'll be very interested in your reply.
His last paragraph got me thinking. In view of the fact that the CA measures the rate of angular change at the rod butt, is it fair to say that the curve depicted on the computer readout is actually ACCELERATION in the physics sense of the word ? (especially since as you have pointed out, acceleration is a vector quantity.) Seems to me that the graph is that of what is actually measured ..... rate of angular change.
Best,
Gordy