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”
Category Archives: Class Notes
JO TORI
The jō 杖 (“wooden staff”) is a walking stick usually about four feet in length. It is unclear precisely how it became incorporated within Aikido. While some of the jō movements come from spear-fighting (yarijutsu 槍術), and others from staff-fighting (jō-jutsu 杖術 and bō-jutsu 棒術), many of them are most similar to the use of a bayonet (jūken-jutsu). Jō tori is takingContinue reading “JO TORI”
DAN GRADES TEST PREP 2022
Progressive video repository to track student progress for testing. Thank you Jerry Michalski for the technical guidance! ____________________________ Instructions: Download your video so you can see the file. Go to studio.youtube.com and click Create (upper right). Pick your video and upload it, then name it and in one of the steps you’ll see a radio button toContinue reading “DAN GRADES TEST PREP 2022”
Protective Arts 