SunTour Quattro
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Category:  Shifters
Name:  SunTour Quattro
Brand:  SunTour
Model:  
Years:  Late 1980's - ?
Country:  Japan
Added By: Walkman-man on 09/25/15
Updated By: Walkman-man on 09/26/15
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SunTour QuattroSunTour QuattroSunTour Quattro
Shifter Type DowntubeAttachment Style Clamp-On
Shifting Systems7sp SunTour AccuShiftLever Markings
Lever MaterialAluminum  
General Information
These look to be midrange shifters from Suntour. There's very little information on their Quattro parts. One source indicates that they were used as stock parts on the Bianchi Campione Del Mondo (CDL) model, as well as explaining that the apparent Quattro groupset appears to be a replacement for the Cyclone groupo:
"Cyclone 7000 was spec'd on the CdI in 1987 and 1988. Quattro appeared on it in 1989, the year Cyclone was dropped from the SunTour line. It's possible that Bianchi requested a small production run of Cyclone but SunTour was hesitant to use the retired model name."
As well as this, another source indicates that this Quattro range of parts were a one-off, only having the name associated with them for the period that Bianchi needed a groupset for the above-mentioned bike, and was never an official Suntour groupset (indeed, it doesn't show up in the company's catalogues for this period, and seems to be pretty rare kit).
Quality:Rarity:
 
 
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Brand Information(click to expand)

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
1984
1985
1986
1987
1988
1989
1990
1991
1992

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)

 
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