SunTour Superbe
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Category:  Rear Derailleurs
Name:  SunTour Superbe
Brand:  SunTour
Primary Group:  Superbe
Model:  RD-2100
Years:  1977 - 1983
Country:  Japan
Weight:  196 grams (avg)
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Added By: JFischer on 07/07/07
Updated By: peterbman on 05/05/18
Additional Photos - click for full size
SunTour SuperbeSunTour SuperbeSunTour SuperbeSunTour SuperbeSunTour SuperbeSunTour Superbe
 Verify Component Photos
Outer Plate MarkingsSunTour SuperbeInner Plate MarkingsMaeda Industries Japan [date code]
MaterialAluminum Alloy; SteelDesign CategorySlant parallelogram
Attachment Bolt SizeBolt OnCable Attachment Bolt Size9mm Wrench
Shifting SystemsFrictionCable AdjusterNo
Cage LengthShortMax Cog Size23
Max Chain Wrap20 tooth wrap  
General Information
This is the 1st Superbe model rear derailleur offered by Suntour.  There is also an RD-3100 version. That one was called the Superbe Pro and differed from the 2100 as follows. The RD-3100 used aluminum alloy pivot bolts (with no engravings) and the pulley and cable lock down bolts are Allen head. The RD-2100 uses steel pivot bolts and standard hex wrench head bolts for the others mentioned. The RD-3100 is often confused for the RD-2100 since neither has the part number on the derailleur body nor was the "PRO" on the RD-3100 body either, but if you look at some of the on-line 1980/81 vintage Suntour catalogs you'll see pictures of both versions.

The RD-3100 is only 169 grams or 25g less than the 194g RD-2100 version!  

There are two variations of the RD-2100 and RD-3100 in which the internal coil spring mounting bolt was either a hex head bolt for the early models (Aug-1980 and Prior) which changed to a flush Allen head bolt on later models (Aug-1980 and Later).  From my body date observations the RD-2100 and RD-3100 derailleurs used the exact same body and there appears to be two major time frame lot runs.  One lot was made in mid-1977 through early 1978 (early model) and then a later run happened at two points in mid-1980 and early 1981 (late model).  I have currently found few models of either derailleur with a body date code from the years 1978 or 1979!  
Quality:Rarity:
 
 
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Resources:Reference & ChartsCatalogsExternal Resources
Component Groups
Primary Group NameBrandQuick InfoBrowse Group Components
SuperbeSunTour1977 - 1985, Road RaceView 28 Components
Details:   Face lift to "Superbe II" in 1983
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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WeightSourceNotesAdded By
198 GramsUnknown JFischer
194 GramsSpec MGTS
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