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| Inicio >>> Mecánica >>> Manuales y Especificaciones >>> Especificaciones Shimano Acera X 1997 | ||||||
| Specifications | Series | ACERA-X 1997 | ||||
| Rear Derailleur | Model No. | RD-M291 | ||||
| Speeds | 7-speed | |||||
| Max. Sprocket | 28T | |||||
| Min. Sprocket | 11T | |||||
| F/Difference | 18T max. | |||||
| Total Capacity | 35T | |||||
| Advanced Light Action | yes | |||||
| IG/HG/UG Chain Compatibility | HG compatible | |||||
| Note | ||||||
| *Front Derailleur | Model No. | FD-M291 | ||||
| Top-Low Max. Capacity | 18T | |||||
| Top-Middle Min. Capacity | 8T | |||||
| Top Gear Teeth | 42T | |||||
| Clamp Diameter | 28.0 - 28.6/31.8mm | |||||
| Chain Stay Angle | 63 - 66°, 66 - 69° | |||||
| Advanced Light Action | yes | |||||
| Top-Swing Action | yes | |||||
| Note | ||||||
| Rapidfire/ EZ-Fire Plus | Model No. | ST-M290 | ST-M295 | ST-EF20 | ST-EF25 | |
| Dual SIS | Rear | 7-speed | 7-speed | 7-speed | ||
| Front | triple | triple | triple | |||
| Lever Length | 2.5-finger | 3-finger | 2.5-finger | short reach | ||
| Optical Gear Display | digital type | digital type | dial type | |||
| Note | bent handlebar available | EZ-Fire Plus | ||||
| EZ-Fire/ Shift/Brake Lever | Model No. | SB-M290 | SB-M295 | |||
| Speeds | rear 7-speed, front triple | rear 7-speed, front triple | ||||
| Lever Length | 2.5-finger | 3-finger | ||||
| Optical Gear Display | sliding type (below bar) | sliding type (below bar) | ||||
| Note | EZ-Fire | EZ-Fire, bent handlebar available | ||||
| Cantilever Brake | Model No. | BR-M290-E | ||||
| Arm Length | M, L | |||||
| Brake Pad Type | M55T | |||||
| M-System/Anti-Vibration M-System | M-system | |||||
| Low-Flex Design | no | |||||
| Crankset | Model No. | FC-M291 | ||||
| Gearing | 42-34-24T | |||||
| Bolt Circle Diameter | riveted | |||||
| Crank Length | 170/175mm | |||||
| IG Compatible | no | |||||
| HyperDrive-C | w/SGX-II | |||||
| Sealed Cartridge Bottom Bracket | Model No. | BB-LP26 | ||||
| Marking/Spindle Length | MM110/110.5mm | LL113/113mm | ||||
| Chain Line | 47.5mm | 50.0mm | ||||
| Shell Width | 68/70mm | 68/70/73mm | ||||
| Rear Freehub | Model No. | FH-M290 | ||||
| Speeds | 7-speed | |||||
| Over Lock Nut Dimension | 130/135mm | |||||
| Spoke Holes | 36/32H | |||||
| QR Lever | steel | |||||
| Front Hub | Model No. | HB-M290 | ||||
| Over Lock Nut Dimension | 100mm | |||||
| Spoke Holes | 36H | |||||
| QR Lever | steel | |||||
| Cassette Sprocket/ Freewheel | Model No. | CS-HG50 | ||||
| Speeds | 7-speed | |||||
| IG/HG/UG | HG | |||||
| Group Identification | ac (11-28T) | |||||
| Color | silver | |||||
| Chain | Model No. | CN-HG50 | ||||
| Type | HG narrow | |||||
| Inner Link Finish | black | |||||
| Outer Link Finish | black | |||||
| Link Pin | chromizing treatment | |||||
| Headset | Model No. | not available | ||||
*The E-type front derailleur mounts to the bottom bracket through a support plate and also requires a special boss or clamp adapter on the seat tube. **E-type bottom bracket is for use with bottom bracket mount front derailleurs. | ||||||
