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| Category: | Cranksets |
| Name: | Sakae/Ringyo (SR) Silstar |
| Brand: | Sakae/Ringyo (SR) |
| Model: | Silstar |
| Years: | Late 1970's - Early 1980's |
| Country: | Japan |
| Weight: | 183 grams,
Non-driveside crank arm only. Spider is modified, thus lighter than original design. |
| Added By: | JAKE on 06/25/19 |
| Updated By: | JAKE on 06/25/19 |
Additional Photos - click for full size |
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 Verify Component Photos |
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| Chainring Count | Double | BCD  | 120mm |
| BB Style | Square Taper (JIS) | Pedal Threads | 9/16" x 20f (Italian) |
| BB Length | | Flutes | Crank Arm;
Crank Arm (back side); Spider |
| Lengths | 170 | Arm/Spider Material | Aluminum Alloy |
| Front Markings | SILSTAR (at spindle end) | Back Markings | (from pedal-BB) S (longitudinal, stamped) 1 "JIS" (circle logo) "SR" (block letter logo) JAPAN 170 (size,mm) "79" above "K" in a circle (date code) |
| Extractor Threading | 22x1mm (Standard) | | |
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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