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| Category: | Bottom Brackets |
| Name: | SunTour BB-SL10, XC Pro |
| Brand: | SunTour |
| Primary Group: | XC Pro |
| Model: | BB-SL10 |
| Years: | 1992 - 1994 |
| Country: | Japan |
| Weight: | 265 grams (Actual) |
| Added By: | euphras on 11/06/12 |
| Updated By: | euphras on 11/16/12 |
Additional Photos - click for full size |
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 Verify Component Photos |
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| Bearing Size/Count per side | 13 x 13 | Spindle Markings | SUNTOUR ML-SL-68 Japan HG |
| Fixed Cup Markings | Microlite WTB Suntour Grease Guard Japan 1.37 x 24T HG | Adjustable Cup Markings | ML Suntour Japan 1.37 x 24T HG |
| Spindle Style | Square Taper (JIS) | Axle Material | Cr-Mo |
| Available Threadings | English/ISO: 1.370 x 24;
Italian: 36mm x 24 | Length(s) | 115 mm |
| Tools Needed | Spanner, Locknut Wrench and Fixed Cup Wrench | | |
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
|
N |
O |
P |
Q |
R |
S |
T |
U |
V |
W |
X |
Y |
Z |
|
1971 |
1972 |
1973 |
1974 |
1975 |
1976 |
1977 |
1978 |
1979 |
1980 |
1981 |
1982 |
1983 |
| |
|
A |
B |
C |
D |
E |
F |
G |
H |
I |
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|
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1984 |
1985 |
1986 |
1987 |
1988 |
1989 |
1990 |
1991 |
1992 |
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SunTour Month Code
|
A |
B |
C |
D |
E |
F |
G |
H |
I |
J |
K |
L |
|
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)
