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| Category: | Freewheels |
| Name: | SunTour PT-5000, Perfect (5 speed) |
| Brand: | SunTour |
| Model: | PT-5000 |
| Years: | 1970's - 1980's |
| Country: | Japan |
| Added By: | JFischer on 02/22/08 |
| Updated By: | MGTS on 02/09/20 |
Additional Photos - click for full size |
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Cog Count  | 5 | Available Threading | English/ISO: 1.370" x 24;
French: 34.7mm x 1mm |
| Color | Golden-Bronze | Index Compatibility | Non-indexed, standard spacing |
| Cog Materials | Steel | Identifying Markings | SunTour Perfect Maeda Industries LTD Japan |
| Removal Tool Style | Two Prong | Removal Tool | Park FR-2; VAR 706;
Bicycle Research CT-7;
SunTour 2 prong |
| Original Available Ranges | Numerous cog arrangements | | |
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
|
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)
