SG-S7051-8
碟刹用内变速花鼓（8 速）
-
FEATURE
- 变速性能更高，即使因为电动自行车电机引起高链条张力也不例外
- 改进适用于电动自行车和非电动自行车
相关技术
产品规格
| 型号 |
SG-S7051-8 |
| 系列 |
SHIMANO ALFINE S7050/S705 系列 |
| Color |
Silver, Black, - |
| Average weight |
1,670 g |
| Bike Type_Mount Type |
CENTER LOCK disc brake |
| Bike Type_Mount Type |
CENTER LOCK（中央锁紧）碟刹 |
| Speeds |
8 |
| Gear ratio_Total |
307% |
| Gear ratio_1 |
0.527 |
| Gear ratio_2 |
0.644 |
| Gear ratio_3 |
0.748 |
| Gear ratio_4 |
0.851 |
| Gear ratio_5 |
1 |
| Gear ratio_6 |
1.223 |
| Gear ratio_7 |
1.419 |
| Gear ratio_8 |
1.615 |
| Shifting power modulator |
✔ |
| Spoke hole_32H |
✔ |
| Spoke hole_36H |
✔ |
| Axle length (mm)_187 |
✔ |
| Shifting Structure |
DI2 |
| Driving efficiency |
高 |
| Flange diameter (mm) |
104.3 |
| Flange width (mm)_Left |
3.2 |
| Flange width (mm)_Right |
3.2 |
| Gear change support mechanism |
✔ |
| O.L.D. (mm) |
135 |
| Offset (mm) |
3.15 |
| P.C.D. (mm) |
92.6 |
| Silent clutch |
✔ |
| Spoke size |
#13 / #14 |
| Flange distance (mm) |
57.3 |
