The banner image shows a cam with a flat follower. Cams are used to convert rotary to linear motion. As the cam rotates, the follower rises and falls: Abrupt changes in the cam’s velocity results in large accelerations and cause the follower to jerk or chatter. In operating machinery, that is not a good thing, butContinue reading “CAMMING ACTION”
Tag Archives: David Harris
PRAYER ENTRY
Indexing. Conceptually indexing is a way to quickly act based on a limited amount of tactile information. In the ryotedori series it is easier to understand – the indexing almost can be seen as a logic-gate: if this, then that game. A broader tool to keep in your conceptual tool chest are prayer hands. By placing your handsContinue reading “PRAYER ENTRY”
MASTER JAMES A KEATING
The triadic structure is nearly universal. There are three levels of learning: freshman/sophomore/senior; apprentice/journeyman/master; shu/ha/ri; all triads: triskelions. Learning is progressive. First one follows instructions, memorizes patterns, absorbs variations; once the basics are mastered, one starts to learn the linkages, the theory connecting the techniques; then one starts to learn from his own practice, createsContinue reading “MASTER JAMES A KEATING”
Protective Arts 