SunTour Cyclone MK1  (Report Pending)
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Main Photo
Category:  Shifters
Name:  SunTour Cyclone MK1
Brand:  SunTour
Primary Group:  Cyclone
Model:  Cyclone MK1
Years:  Mid 1970's - Early 1980's
Country:  Japan
Added By: JFischer on 06/30/09
Updated By: Tombo on 07/07/18
Additional Photos - click for full size
SunTour Cyclone MK1SunTour Cyclone MK1SunTour Cyclone MK1
 Verify Component Photos
Shifter Type DowntubeAttachment Style Clamp-On
Shifting SystemsFrictionLever MarkingsSunTour
Lever MaterialAlloy; Aluminum  
General Information
Imo not a Cyclone MK1, but a DLW LD-1000 ...!
Reported By:Tombo
Report Date:7/7/2018
Report Reason:Incorrect Content, Imo not a Cyclone MK1, but a DLW LD-1000. Thanks for replying, Jon!
 
Quality:Rarity:
 
 
Outstanding Report Submitted  
Additional Resources
Marketplace:Looking to buy one of these?Sell one like this
Resources:Reference & ChartsCatalogsExternal Resources
Component Groups
Primary Group NameBrandQuick InfoBrowse Group Components
CycloneSunTour1976 - , Road RaceView 12 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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