Thread: Miyata 600GT
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Old 07-13-20, 03:37 PM
The Golden Boy 
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Join Date: Aug 2009
Location: Waukesha WI
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Bikes: 1978 Trek TX700; 1978/79 Trek 736; 1984 Specialized Stumpjumper Sport; 1984 Schwinn Voyageur SP; 1985 Trek 620; 1985 Trek 720; 1986 Trek 400 Elance; 1987 Schwinn High Sierra; 1990 Miyata 1000LT

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That looks strikingly similar to the 1990 Miyata 1000 LT.

M1000LT Drivetrain by Dave The Golden Boy, on Flickr

Although the colors don't match- but this is (I think) the 1990 catalog specs:

Miyata 1990 Specs by Dave The Golden Boy, on Flickr

You might have some issues with replacing the derailleur and freewheel. This system is Accushift- the other main indexing system of the 80s and early 90s. It's really only compatible within itself- or specific combinations of stuff. Accushift used different spacing than Shimano's SIS (in 7 and 8 speed); additionally, the derailleurs used a different pull ratio. To get best results with 7 speed Accushift- you should use an Accushift freewheel, derailleur and shifter. That XCE stuff is pretty styley- I'd see how the new chain does you. I'd also echo the advice of giving the bar end shifters a chance- there's millions of people who prefer bar end shifting.

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