In 1991, Dangerfield began his study of Yoshinkan Aikido with Joe Thambu Shihan of Aikido Shudokan.[2] Dangerfield officially founded the Aikido Institute Inc. in 1991 as a nonprofit organization to train martial artists on Queensland’s Sunshine Coast.[3] 

The Aikido Institute was a full-time dojo that provided alternative educational programs based on Aikido for young people in local schools.[4] Dangerfield earned his nidan (second black belt) in 1993, at which time Dangerfield began traveling to Japan to deepen his understanding of Aikido and Budo in general. Twice a year, he traveled to Japan for month-long training trips, where he trained at the Yoshinkan Hombu Dojo under Inoue Kyoichi Sensei and Chida Tsutomu Sensei. 

He also traveled occasionally to the Aikikai Hombu Dojo in Tokyo and several times to Iwama, where he trained with Saito Morihiro Sensei.[5]