Suntour (Edge?)
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Category:  Shifters
Name:  Suntour (Edge?)
Brand:  SunTour
Primary Group:  Edge
Model:  
Years:  Early 1990's - ?
Country:  Japan
Added By: abuhugh on 01/28/12
Updated By: abuhugh on 01/28/12
Additional Photos - click for full size
Suntour (Edge?)Suntour (Edge?)Suntour (Edge?)Suntour (Edge?)
Shifter Type DowntubeAttachment Style Downtube Braze-on (standard)
Shifting Systems7sp SunTour AccuShift
Friction
Retro-Friction
Lever MarkingsACCUSHIFT PLUS 7 F7 (on RH lever) - SUNTOUR POWER CONTROL JAPAN (on LH lever)
Lever MaterialAluminum; Plastics; Steel  
General Information
I assume this to be a 7-speed variant of the Edge range shifter but would welcome any information to the contrary.  There is no group marking on the set.  Shape and styling are pretty much identical to the Radius SL-RA00-B model and lever shape also appears identical to that of the higher grade Superbe Pro 6/7 index shifters, so it is presumably contemporary to these levers.  Rear control lever has Suntour's Accushift Plus system for 7-speed but can be switched to friction shifting (in which setting it looks like it has enough travel to handle 8 speeds).
Seems I must have bought these new in 1990 but then fitted the bike in question out with first generation Campag Athena shifters instead so these Suntours have spent the last 20 years in the parts bin, never used. 
Quality:Rarity:
 
 
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Additional Resources
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Resources:Reference & ChartsCatalogsExternal Resources
Component Groups
Primary Group NameBrandQuick InfoBrowse Group Components
EdgeSunTourSport & RecreationView 8 Components
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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