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  1. #1
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    date codes for 1981 Miyata 610

    I'm overhauling my 1981 Miyata 610. While it's apart, it would be easy to post date codes of components. I know that some people like to collect that kind of data.

    Everything's off the bike except the headset (letting lbs do it) and bottom bracket(replaced last year).

    I'm updating safety equipment, such as brake levers and pads. I'll be adding a Nitto dirt drop long stem and Brooks B17 for comfort. Otherwise, it's cleaning, lubing, new cables and the like.

    I'm going to be asking a lot of questions, so I'd like to contribute a little.

    Mike

  2. #2
    Senior Member Yogurt's Avatar
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    Formerly...1978 Proteus, 1981 Miyata 912, 1983 Schwinn Paramount, 1962 Raleigh Sports Deluxe, 1976 Alan Super Record.
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    Good luck with the build! Is yours black, blue, or burgundy? I've got a 1981 Miyata myself, "J" date code. It seems that at least for my particular component group (Shimano 600) Miyata just had barrels of 'em, I've got date codes spanning two or three years on the Shimano stuff.

    Here's a nice link if you haven't already found it:

    http://miyatabicyclecatalogs.blogspo...alog-1981.html

  3. #3
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    Quote Originally Posted by Yogurt View Post
    Good luck with the build! Is yours black, blue, or burgundy? I've got a 1981 Miyata myself, "J" date code. It seems that at least for my particular component group (Shimano 600) Miyata just had barrels of 'em, I've got date codes spanning two or three years on the Shimano stuff.

    Here's a nice link if you haven't already found it:

    http://miyatabicyclecatalogs.blogspo...alog-1981.html
    Thanks, it's an odd 1981 J code. It has the 1982 color silver blue. It also has a double chainring, stem shifters and no bottle braze-ons. The frame size is 27", not listed in the catalog.

    Mike

  4. #4
    Old Skeptic stronglight's Avatar
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    Quote Originally Posted by redbarnlane View Post
    I'm overhauling my 1981 Miyata 610. While it's apart, it would be easy to post date codes of components. I know that some people like to collect that kind of data.

    Mike
    Nice bikes! If you have not already found this useful section on the Trek website, HERE is a listing to help interpret the various date codes used by the different Japanese component companies - just in case you ever want to note the actual dates found on yours.

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