| 摘要 |
PROBLEM TO BE SOLVED: To provide various types of electrically-driven derailleurs at low costs.SOLUTION: A front derailleur 23f includes: a fixing member 51; a chain guide unit 5a; and a motor unit 6. The first chain guide unit 5a is selected from first to sixth chain guide units and includes a chain guide 52 and a support mechanism 53. The motor unit 6 may be attached to each of the first to sixth chain guide units. |
