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Classic and Vintage Bicycles: What's it Worth? Appraisals and Inquiries Use this subforum for all requests as to "How much is this vintage bike worth?"Do NOT try to sell it in here, use the Marketplaces.

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Old 12-20-12, 11:38 AM   #1
J Sando
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Univega GranTech 6400

Hi guys. I'm new around here. Been reading from the Bike Forum for about a year now but just recently had a question of my own and so finally created profile of my own.
So I just bought a Univega Grantech 6400 for $80. Everything Looks great. The only parts of the bike that are not original as far as I can tell are the seat and peddles. Everything else Shimano 600, black Araya super hard anodized 700s, Continental Ultra Sport tires. The frame itself is Aluminum main triangle with CroMo fork and rear drop outs. This bike is really light. Looks like it was paid for and then hung up in the garage till last week when I got my hands on it. Anyway, I love to keep it but I don't have room for two bikes in my tiny apartment. My other bike is a Miami Vice Centurion Ironman Expert with all original 105s, again except the seat and peddles. This bike is also in near mint condition. I've been riding it for the past 4 months are so and love it. It just feels so cool. I gotta get rid of one of them but I can't find much info about the Univega GranTech and I don't want to lose out on something that may be worth far more. Can I get some INFO please, perhaps some suggestions as to what one of you out there would do. One idea I had was to swap out the 105s on the Ironman with the 600s and wheels of the Univega. What do you guys think?
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Old 12-20-12, 11:47 AM   #2
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I think you need to post pictures. There's no point in anyone adding an opinion without see the condition of either bike.
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Note to you BLOWHARD MORONS out there: The fork is not bent. Most PEUGEOTS of the '70s forks DID NOT line up with the head tube angle. This is normal. The last pic is from the 1972 Dutch catalog showing this EXACT MODEL in diagram. Keep your comments to yourself......
It's pronounced, "Co-burn."
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Old 12-20-12, 11:56 AM   #3
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oops, perhaps some pics would help.
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Old 12-20-12, 12:05 PM   #4
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I never heard of a granTech but it looks nice. Is there any tubing info? The Ironman is tange 1 right?

Since you just bought the Univega for $80 I can't see reselling it for much more now, especially if you live in a cold area. If your willing to work with a buyer on shipping, at their expense, you might get $250 or so for the Ironman.

better/more pics on the Univega? having never owned a Univega but always wanting to try one I would probably keep it and sell off the Ironman


Is the fork the same color as the rear triangle?

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Others but still loved,; '80 RIGI, '80 Batavus Professional, '87 Cornelo, '09 Motobecane SOLD, '?? Jane Doe (still on the drawing board), '90ish Haro Escape
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Old 12-20-12, 12:35 PM   #5
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Yeah there are two tubing stickers one simply says made in taiwan, the other is down below. Yeah the tubing on the Ironman is Tange 1 all around. As far as the color of the Univega goes, yeah its two different colors. The main triangle is flat grey aluminum and the fork and rear drops are a really cool looking gun metal CroMo.
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Old 12-20-12, 02:10 PM   #6
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That was an fantastic bargain. The Grantech 6400 was an upper mid-range model circa 1988/1989. The Gran designates it as the racing series. The Tech signifies a frame with bonded alumimum main tubes mated to CrMo stays and forks. The 6400 corresponds to the series designation of the Shimano 600 Ultegra components.

Both are good bicycles and they appear to be the same size or very close. You need to spend some time with the Univega. to see which one you prefer. There's not a whole lot of performance difference between the 105 and 600 Ultegra, so I would not be taking the time and trouble to swap parts. Both bicycles are of roughly equal value, so I'd make my decision soley on personal preference for their respective ride characterisitcs.
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Old 12-20-12, 02:46 PM   #7
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That was an fantastic bargain. The Grantech 6400 was an upper mid-range model circa 1988/1989. The Gran designates it as the racing series. The Tech signifies a frame with bonded alumimum main tubes mated to CrMo stays and forks. The 6400 corresponds to the series designation of the Shimano 600 Ultegra components.

Both are good bicycles and they appear to be the same size or very close. You need to spend some time with the Univega. to see which one you prefer. There's not a whole lot of performance difference between the 105 and 600 Ultegra, so I would not be taking the time and trouble to swap parts. Both bicycles are of roughly equal value, so I'd make my decision soley on personal preference for their respective ride characterisitcs.

Interesting so the Nuovotech450 I am familiar is more a "Sport" bike and I think they have Exage something on it. I didn't realize it was Aluminium maybe the OP really needs to figure out a way to keep both then.
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Old 12-20-12, 03:13 PM   #8
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Interesting so the Nuovotech450 I am familiar is more a "Sport" bike and I think they have Exage something on it. I didn't realize it was Aluminium maybe the OP really needs to figure out a way to keep both then.
Yes, the Nuovotech 450 and Grantech 6400 used similar, mixed material frames. The main tubes on both were bonded MG 500 aluminum while the stays and forks were CrMo. Univega literature didn't spec the CrMo though road tests of the era stated "fancier" CrMo on the Grantech, which I read as higher level. The 450 designation is the same as the that of the Exage Sport components.
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Old 12-20-12, 08:21 PM   #9
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Whoooa! T-Mar made a comment on my page. T-Mar, whats up, I'm a huge fan. Your like my vintage bicycle super guru. Thanks so much for the info. I couldn't find much else on line. There was couple old threads on the forum from a few years ago but they were not much help. Hey just curious, any idea if this bike, the GrandTech, came in any other color schemes. Oh and is the Ironman considered a race bike or a touring bike. I've read some say that it doesn't really have the specs of a true tri-bike. Oh yeah and check this out just for kicks. I just gave this bike the son of my good friend. He's into everything Japanese and he just got in to cycling so I hooked him up with my Blue Nishiki Competition. Beautiful bike in perfect shape. I was riding it for a while but is was just to small and it was giving me a serious neck cramp every time I rode. Any way this is the best pic I could find of it. I have no up close shots. I thinks its a 72-73 because cause it doesn't say Comp. It actually has Competition written out in cold cursive golden paint. T-Mar can you verify the date of this one. It has bar end shifters, suntour cyclone r-derailer, and a mix of dia compe and suntour components.
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Old 12-23-12, 12:48 AM   #10
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Both bikes are about the same size, and similar in vintage and components. So keep whichever one you like better. Better yet, keep them both! I think either bike could easily go for $250 around here, and top out around $300 if you marketed them well in season.

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This bike is also in near mint condition.
Sorry... personal pet peeve. It's not "near mint." It looks to be in good used condition but it's obviously used and appears dirty. Mint = showroom new, never ridden.
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Old 12-23-12, 08:28 AM   #11
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Grantech 6400: I've only seen the one color scheme. However, there was an advertisement where the forks and stays looked black. I suspect this may just have been the exposure or look they were trying to capture, as the grey on the derailleurs pivot castings and brake calipers also looked decidely dark and almost black.

Centurion Ironman: Based on the color scheme, your Ironman would be circa 1987. The geometry was decidely race oriented. It's definitely not what we consider triathlon bicycle geometry to-day but was typical for the era. Back when triathlon first went mainstream, in the mid-1980s, the product marketed as triathlon bicycles was essentially a mid-range racing bicycle. Triathlon geometry started coming into it's own a few years later, circa 1990, with the emergence of companies like QuintanaRoo, who popularized the ultra steep seat tube that faciltated the forward body rotation necassary for optimal positioning with the new aero bars.

Nishiki Competition: It's definitely not 1972-1973 based on the Nishiki logo. It's late 1970s (1975-1979) but I don't know the exact year. The livery and component mix is typical of those years, though I can't say I've ever seen them with bar end shifters. Given the apparent aftermarket bar wrap, missing lever hoods and high cable entry points, I suspect these may be non-OEM. However, if you get me the serial number, I should be able to narrow down.
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