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| Category: | Front Derailleurs |
| Name: | Shimano 50, EC-100 |
| Brand: | Shimano |
| Primary Group: | 500 |
| Model: | EC-100 |
| Years: | 1975 - ? |
| Country: | Japan |
| Weight: | 130 grams |
| Added By: | cinco on 11/01/07 |
| Updated By: | JFischer on 01/09/10 |
Additional Photos - click for full size |
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# Rings Designed For  | Double | Outer Plate Markings | Shimano 50 |
| Inner Plate Markings | None | Clamp Markings | "Shimano" on front, "Shimano Japan {date code}" on back |
| Inner Clamp Markings | None | Design Category | Parallelogram |
| Pivot Arm Markings | | Plate Material | Steel |
| Clamp Style | 28.6mm Clamp | Cable Attachment Bolt | |
| CableStop | Yes | Clamp Bolt Type | |
| Max Ring Difference | 14T | | |
| Additional Resources |
| Resources: |  Reference & Charts Catalogs |
| Component Groups |
| Primary Group Name | Brand | Quick Info | Browse Group Components |
| 500 | Shimano | 1975 - 1980, Sport & Recreation | View 5 Components |
Details: 500 was Shimano's first "famous" touring group in the 70's. It was the forefather of the 600 full group, which was introduced in 1976. But they still produced 500 as a cheaper alternative of 600. End date also unknown but it seems, they stopped producing in the early 1980's.
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Shimano Model Number Prefix List:
| BB Bottom Bracket |
BL Brake Lever |
BR BRake |
| CB Coaster Brake |
CJ Cassette Joint |
CN ChaiN |
| CP Chain Protecto |
CR Chain Ring |
CS Cassette Sprockets |
| DF chain DeFlector |
DH Dynamo Hub |
FC Front Crank |
| FD Front Derailleur |
FE Fork Ends |
FH FreeHub |
| FS Front Suspension |
HB HuB |
HD HanDle bar |
| HP Head Parts (Head Set) |
HS Handle Stem |
IF Inter-3 Freehub |
| LP LamP |
MF Multi Freewheel |
PD PeDal |
| RD Rear Derailleur |
RH Rollerbrake Hub |
RM RiM |
| RR ReflectoRs |
RS Rear Suspension |
SB Shift Brake lever (Nexus, ?) |
| SC Speed Calculator (cycle computer) |
SF Single Freewheel Freilaufritzel |
SG Speed chanGe hub |
| SH SHoes |
SL Shift Lever Schalthebel |
SM SMall parts |
| SP Seat Post |
SQ Seat Quick release |
SS Single Sprocket |
| TL TooL |
WH WHeel
| ST Shift Brake Lever (STI, Rapid Fire, etc) |
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