In this study variable radius pulley is proposed, and the proposal should be applied to pulley of CVT. Variable radius pulley consists of two disks and sliding pins. Phase difference of two disks make a change pitch diameter. Therefore change speed is accomplished by changing pitch diameter of pulley. In this paper analysis of rotating force for slot variation of the rotary disk of variable radius pulley was performed. The results of analysis are appropriate to put to practical use of the variable radius pulley.

Abstract
 1. 서론
 2. 반경변화 풀리
 3. 회전력 해석
  3.1 변속과정
  3.2 구동풀리 중심축에 구동력 작용
  3.3 구동풀리 축에 회전력 및 변속 작용
 4. 결론
 후기
 References

• 권영웅(서일대학교 자동차과) | Kwon, Young Woong
• 오선(서일대학교 자동차과) | Oh, Seon