believe the fairway response was a typo…
I had similar questions a few months ago. My response from Britt and Jim:
Britt Lindsey 5 months Ago
Since Jim has been involved is this discussion before, I asked him to read your post. His response is below:
“The shaft manufacture that makes our MPF Pro Series shafts does a vertical oscillation test on the shaft and mark that vertical oscillation plane with the white line. From what I understand it is just a visual test. They then rotate the shaft 90 degrees and mark the shaft with a red line. When the shaft is installed the red line goes on top (12:00) and this puts the oscillation plane marked by the white line working to and from the target (9:00 to 3:00). The factory is not testing the shaft to find a stiff side just a stable oscillation plane. This same factory is not manufacturing the KBS graphite shafts and marking them the same way.
We have spine checked these shafts and Flo’d them as well with a laser pointer and we do see some variance in the marks from the factory.
If I am doing a Flo test I always pay attention to the clamps that I am using. Our Maltby frequency machine clamps from the top and bottom of the shaft so I always oscillate in a vertical plane. If the clamps apply pressure from side to side I oscillate in a horizontal plane. I have found this to make a difference.”
I couldn’t really add anything to what he said. I will check a few MPF Iron shafts to see where the marks are in relation to the “stiff” side and post the results.
Hope this helps.
Britt Lindsey / Jim Yachinch