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| Category: | Front Derailleurs |
| Name: | SunTour FD-CL10-B, Cyclone 7000 |
| Brand: | SunTour |
| Primary Group: | Cyclone 7000 |
| Model: | FD-CL10-B |
| Years: | 1987 - 1989 |
| Country: | Japan |
| Weight: | 107 grams |
| Added By: | JFischer on 01/25/08 |
| Updated By: | cudak888 on 11/05/12 |
Additional Photos - click for full size |
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# Rings Designed For  | Double | Outer Plate Markings | SunTour Cyclone 7000 |
| Inner Plate Markings | Maeda Ind. Japan, VIA, DL | Clamp Markings | |
| Inner Clamp Markings | | Design Category | Parallelogram |
| Pivot Arm Markings | | Plate Material | Chrome plated steel |
| Clamp Style | 28.6mm Clamp; 31.8mm Clamp;
Braze-on Tab | Cable Attachment Bolt | 5mm Allen Key |
| CableStop | No | Clamp Bolt Type | 5mm Allen Key |
| Max Ring Difference | 18T | | |
| Component Variations | View Detailed List Manage Variations |
| Variations of Component exist (Component is 1 of 2) | Brand | Group |
| SunTour Cyclone 7000 (White) | SunTour | Cyclone 7000 |
SunTour (Maeda)
SunTour derailleurs have a two-letter date code. On rear derailleurs the code is stamped on the back side of the inner parallel arm. On front derailleurs it is stamped on the back side of the inner cage.
The first letter represents the year. Larry Osborn and I believe O (Oh) is 1972, V is 1979 and A is 1984. As with Shimano, the second letter is the month code, where A is January and L is December.
SunTour Year Code
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N |
O |
P |
Q |
R |
S |
T |
U |
V |
W |
X |
Y |
Z |
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1971 |
1972 |
1973 |
1974 |
1975 |
1976 |
1977 |
1978 |
1979 |
1980 |
1981 |
1982 |
1983 |
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A |
B |
C |
D |
E |
F |
G |
H |
I |
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1984 |
1985 |
1986 |
1987 |
1988 |
1989 |
1990 |
1991 |
1992 |
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SunTour Month Code
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A |
B |
C |
D |
E |
F |
G |
H |
I |
J |
K |
L |
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Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
The earliest Suntour derailleur I have found with a code is marked OF. A rear derailleur marked OD (corresponding to April of 72) was reported by Leighton Walter. I have a bike that dates from between 1970 to 1972 that has the original SunTour derailleurs. These derailleurs do not have date codes on them, so I believe the coding started sometime between 1970 and April of 1972.
(source: vintage-trek.com)
