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Miyata 600GT Touring Bike

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Miyata 600GT Touring Bike

Old 08-25-07, 05:58 PM
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Sizzle-Chest
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Miyata 600GT Touring Bike

I splurged today and spent the most I have ever spent on a bike to buy this 1990 Miyata 600GT. It was a tuff decision but I will be using it every day for a long commute and it fits perfectly. From what I have read they are good touring bikes, and the 1990 was a good year because they have splined triple-butted chromoly and bar end shifters. It also has fork mounting (what’s that called, double down or something?) for rack and fenders It’s in immaculate condition and the previous owner clearly never rode it. It even came with the owners manual/ original price tag. Now, I paid $200 and my average bike purchase is less than $20, so will someone please tell me that I did okay? I don’t mind if you say I paid too much because I’m sure I did, but if at lease one person says that I paid a good price, then I will feel a little better. Anybody? Check out that pearlized paint job . . .

I plan to replace a few things (like the foam grips) but one thing I was wondering is if the XCE derailleurs were any good? Any other comments or info would be appreciated. Thanks!








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Old 08-25-07, 06:21 PM
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Nice bike! I don't know anything about the derailleurs. Do they work ok?
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Old 08-25-07, 07:04 PM
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actually, the gears seem to lock up during certain gear combos, which is why i'm asking.
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Old 08-25-07, 07:36 PM
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Sweetness. You know I'm a fan but yours is in better condition than mine. I need to do some work on mine. You also have the sharp looking "Miyata" decal/sticker on the chainstay. Right now I am in the process of replacing the chain and cleaning off the rest of the drivetrain and frame. Once that is done I will then, no doubt, have to adjust derailleur and brakes as well as switch out some parts in order to improve fit and comfort. Overall I'd say nice bike and for what you will get out of it, it should be worth the $$$. I have been trying to keep trach of such things as component specs and sizing. Does yours have a freewheel or a cassette? Anyway, have fun with the bike. Please post or PM if you make any interesting observations regarding servicing or handling.
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Old 08-25-07, 07:54 PM
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Wow. I agree nobody ever rode that bike....!
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Old 08-31-07, 09:48 PM
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you got a good deal

When I see that bike I don't feel bad having sold a Trek 720 for 80.00It needed to have the chain shortened by a bent link or three and the derailer was bent in the accident that wrecked the chain.I substituted an old scrap derailer that did not line up with the hole on the frame like the original.So now to change the tire is a big deal .I alerted the buyer to the issue.I was in a hurry to post it on CL so I didn't do a price search.Probably for the best.The back rim was badly bent and even "the tenDollar Whack" was not quite enough.All I know is I made some dough.
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Old 08-31-07, 10:03 PM
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You did great. That bike is well worth $200. Just look at the prices vintage touring bikes are fetching on ebay. True, yours isn't as "vintage" as some, but it's nice, nonetheless, and it's lugged.

What do you mean the gears are locking up? Looks to me as if someone overlubed the chain and freewheel. It could be that the chain is gunked up, and is kinking. Or the grease in the freewheel could be dry. Take the rear wheel off and spin the freewheel. Does it spin? If not, squirt some lightweight lubricating oil, like Triflow, in there to loosen it up. And clean that chain while you're at it. Or is my vision failing that badly?
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Old 08-31-07, 10:04 PM
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Originally Posted by john Q public View Post
When I see that bike I don't feel bad having sold a Trek 720 for 80.00It needed to have the chain shortened by a bent link or three and the derailer was bent in the accident that wrecked the chain.I substituted an old scrap derailer that did not line up with the hole on the frame like the original.So now to change the tire is a big deal .I alerted the buyer to the issue.I was in a hurry to post it on CL so I didn't do a price search.Probably for the best.The back rim was badly bent and even "the tenDollar Whack" was not quite enough.All I know is I made some dough.
Don't worry, that's not one of the highly sought after early 80s Trek 720s. I think you did well to get $80 considering the problems you mentioned.
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Old 09-01-07, 10:55 AM
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Originally Posted by JunkYardBike View Post
You did great. That bike is well worth $200. Just look at the prices vintage touring bikes are fetching on ebay. True, yours isn't as "vintage" as some, but it's nice, nonetheless, and it's lugged.

What do you mean the gears are locking up? Looks to me as if someone overlubed the chain and freewheel. It could be that the chain is gunked up, and is kinking. Or the grease in the freewheel could be dry. Take the rear wheel off and spin the freewheel. Does it spin? If not, squirt some lightweight lubricating oil, like Triflow, in there to loosen it up. And clean that chain while you're at it. Or is my vision failing that badly?
thanks man! ya, the chain was overlubed or lubed with wd40 so i bought a new chain and cleaned all the parts with a toothbrush and cleaner. i also had to adjust the rear derailure. it turned out that when the bike was locking up, the derailure was actually shifting it over between the chain guard and the largest rear ring and the hanger was going into my spokes!!! after fixing that, i took the freewheel off and removed that dorky chain guard (even though it seems to have served a purpose!)

and i'm sure you will all hate me for this, but i made it fixed gear for winter commuting. i saved everything i took off and plan to put it all back on next summer for some touring. here's what it looks like now:


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Old 09-01-07, 11:18 AM
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Did you have any trouble removing the 4 notch freewheel? I wanted to switch freewheel and chain but had no luck removing the fw. Had to change the chain as the old one was worn with stuck links.
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Old 09-01-07, 11:26 AM
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Originally Posted by tuvok View Post
Did you have any trouble removing the 4 notch freewheel? I wanted to switch freewheel and chain but had no luck removing the fw. Had to change the chain as the old one was worn with stuck links.
no, i happened to have the exact tool i needed, so it was easy. a bike shop shouldn't charge to much to pull it for you.
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Old 09-01-07, 08:32 PM
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Originally Posted by Sizzle-Chest View Post
i also had to adjust the rear derailure. it turned out that when the bike was locking up, the derailure was actually shifting it over between the chain guard and the largest rear ring and the hanger was going into my spokes!!! after fixing that, i took the freewheel off and removed that dorky chain guard (even though it seems to have served a purpose!)
Hmm, I can see how that could cause the problem! The dork disc likely saved you a derailleur and some spokes!

Personally, I don't mind fixies at all, on any frame. I like the clean look. There are only a few gear nazis around, and they just happen to have louder mouths (keyboards?) than most of us. It looks good. Wish I could ride a fixed gear around here (well, it would be a singlespeed in my case), but the hills are just too much for my weak legs. Nice job!
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Old 09-02-07, 07:31 AM
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Nice catch!

You might want to hang out here for a bit:

https://sports.groups.yahoo.com/group/MiyataSpecTour/

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Old 09-03-07, 05:46 AM
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90's Trek

thanks,I couldn,t find that year and the made in china thing is a drag too.
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Old 09-04-07, 07:36 PM
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Thanks SC. I had one of those late night inspirations and tried again. I got the freewheel off. Now to find a new one to go with my brand new chain.
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Old 09-04-07, 08:48 PM
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Fixed or geared that is one sweet ride! Also whenver I see vintage touring bikes I always think "what would it cost to get something close to this bike new?" Answer? You did VERY well for $200! Enjoy!
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Old 09-05-07, 05:31 AM
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Nice 600GT, I've got an 87 Miyata Seven Twelve...triple spline also...you'll find that it'll ride very nicely.
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Old 09-08-07, 11:39 AM
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Could you post some details on your FG conversion. I'd be interested as to what rear gog/freewheel type you now have, if there were and spacing/chainline issues and if those are the original cranks minus two of the chainrings. Thanks.
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Old 09-08-07, 01:01 PM
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Kirei desu ne! The Miyata is beautiful indeed. Of chritian629, I ask whether you might post a photo of your 712? Thanks to you both.
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Old 09-08-07, 02:38 PM
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the conversion was very easy because i already had all the parts on another bike. basically, i started by taking off all the shifters and derailers. next, i removed the crank and bottom bracket. a tripple crank is not ideal because the two larger rings have to be further out to make room for the smaller ring. i replaced the crank with an rx100 double and you will notice that i still had to put the ring on the inside of the spider to get a good chain line. by the way, rx100 stuff is supposed to be lower than other shimano components, but i have been very impressed by their quality. i also replaced the old cup-and-cone bottom bracket with a newer 115mm shimano cartridge bb.

then i threw on my track wheelset which are mavic MA3 wheels with suzue basic high flange hubs. the cog is a 15t dura ace and the freewheel is a shimano 17t. i can flip the wheel and still use the same chain and have two different gear ratios. the chain line is near perfect but would be better with a 110mm bb. was very quick and easy to do.

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Old 09-08-07, 08:24 PM
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Originally Posted by Sizzle-Chest View Post
was very quick and easy to do.
You make it seem easy. Every time I fix one problem on mine, something else reveals itself. I fixed the phantom shifting/skipping b cleaning and lubricating the derailleur cables under the bottom bracket. Once I fixed that I turned my attention to the front derailleur that I very seldom use. After noting that the chain would not stay on the smallest chainring, further investigation revealed that it was bent. Turning my attention to the largest chainring I noted that shifting was rough and that after moving back to the middle chainring the chain tended to slide off the top rear derailleur jockey. Some front derailleur limit screw adjustment *sort of* helped but I am avoiding using the big chainwheel. It also ooks like the BB could use an overhaul (which I suppose could also be causing the shifting problems -- I'm new at this).

The upside to all this is that I did get the bike to practice wrenching on so it is proving to be well suited to that task. Having said that I am getting a sense that less is more and that it might be worthwhile to run a single speed to simplify things a bit.

All this to say thanks for the conversion information Sizzle-Chest, it will be very useful over the next little while as I decide what route to follow.
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Old 07-11-20, 10:37 PM
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I jus got a 600gt two days ago, just finished cleaning her down and putting some bar tape. Will post pics when I can. Itís a smooth ride man. I had a country runner that got robbed and loved the brand so went for something a little cooler
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Old 07-12-20, 12:49 AM
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You do realize that this thread is 13 years old, right? There are many more recent threads regarding Miyatas in C&V:

Lots of posts here starting in 2009 up to current:
Just how big is the Miyata Cult?

More specific to the 600 series:
Vintage Miyata 610 and Similar Non Top of the Line Touring Bikes Thread
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