Sakae/Ringyo (SR) Custom
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Category:  Cranksets
Name:  Sakae/Ringyo (SR) Custom
Brand:  Sakae/Ringyo (SR)
Model:  Custom
Years:  1980's
Country:  Japan
Added By: JFischer on 04/17/08
Updated By: JFischer on 08/16/10
Additional Photos - click for full size
Sakae/Ringyo (SR) CustomSakae/Ringyo (SR) CustomSakae/Ringyo (SR) Custom
Chainring CountDoubleBCD 
BB StyleSquare Taper (JIS)Pedal Threads9/16" x 20 (English)
BB Length Flutes Crank Arm; Spider
Lengths 170Arm/Spider MaterialAluminum Alloy
Front MarkingsCustomBack Markings170 Japan SR
Extractor Threading 22x1mm (Standard)  
General Information
SAKAE "CUSTOM" CRANKS WITH SQUARE TAPER MOUNTS AND 170MM CRANKS, STEEL CHAINRINGS ARE 40T AND 52T.  These cranks came off an 83 Bridgestone.
Quality:Rarity:
 
 
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Additional Resources
Marketplace:Looking to buy one of these?Sell one like this
Resources:Reference & ChartsCatalogsGear Calculator
Brand Information(click to expand)
Date of Manufacturing / Production Code for SR seatposts (at least for the 80's):
The date of prodcution of SR (Laprade) seatposts is shown around the min.insert line as follows:
"letter"-"double digit number", e.g. F-81 oder L-81, while the letter should be the month and the number will be the year of production.
So F-81 seems to be June 1981 while L-81 would indicate December 1981.
(in-line with the code 1 examples on vintage-trek.com...)



 
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