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Ross Super Gran Tour

Old 03-24-18, 12:42 PM
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Hatchet
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Ross Super Gran Tour

Can anyone identify the year of this Ross Super Gran Tour?
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Old 03-24-18, 01:46 PM
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The Shimano 600EX components place it 1978-1983. This model is not listed in the 1982 catalogue. Based on the decal style and CBC (Chain Bike Corp.) reference on the head badge it would appear to be older than Ross' 1982 Shimano 600EX model, the Gran Tour XV, so I'd place it 1978-1981.

The 2325-969 stamped on the dropout is actually the size, colour and model code, as opposed to a serial number. The '23' is the frame size. The '25' is the colour, black. The 969 is the model number.

If you want to narrow the date down you can try looking for an actual serial number or check component date codes using the information at Date of Manufacture of Bicycle Components can be used to date a bike: component dating

I assume the upright bars and brake levers are a conversion by a previous owner.
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Old 03-24-18, 03:08 PM
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Originally Posted by T-Mar View Post
The Shimano 600EX components place it 1978-1983. This model is not listed in the 1982 catalogue. Based on the decal style and CBC (Chain Bike Corp.) reference on the head badge it would appear to be older than Ross' 1982 Shimano 600EX model, the Gran Tour XV, so I'd place it 1978-1981.

The 2325-969 stamped on the dropout is actually the size, colour and model code, as opposed to a serial number. The '23' is the frame size. The '25' is the colour, black. The 969 is the model number.

If you want to narrow the date down you can try looking for an actual serial number or check component date codes using the information at Date of Manufacture of Bicycle Components can be used to date a bike: component dating

I assume the upright bars and brake levers are a conversion by a previous owner.
Thanks!
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Old 03-24-18, 03:31 PM
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All the components on that bike will have date codes on them. Go to the vintage Trek site for a decoder. I look for the newest original part, then add six months to estimate year. If my estimate is November or later, then I roll it to the following year. Brake calipers, derailleurs, crankset will all have date codes. Since the handlebars are a likely a replacement, I would ignore codes on brake levers and stem.
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Old 03-24-18, 06:22 PM
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Originally Posted by wrk101 View Post
All the components on that bike will have date codes on them. Go to the vintage Trek site for a decoder. I look for the newest original part, then add six months to estimate year. If my estimate is November or later, then I roll it to the following year. Brake calipers, derailleurs, crankset will all have date codes. Since the handlebars are a likely a replacement, I would ignore codes on brake levers and stem.
Good to know - thanks for sharing!
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Old 03-24-18, 07:28 PM
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Originally Posted by T-Mar View Post
The Shimano 600EX components place it 1978-1983. This model is not listed in the 1982 catalogue. Based on the decal style and CBC (Chain Bike Corp.) reference on the head badge it would appear to be older than Ross' 1982 Shimano 600EX model, the Gran Tour XV, so I'd place it 1978-1981.

The 2325-969 stamped on the dropout is actually the size, colour and model code, as opposed to a serial number. The '23' is the frame size. The '25' is the colour, black. The 969 is the model number.

If you want to narrow the date down you can try looking for an actual serial number or check component date codes using the information at Date of Manufacture of Bicycle Components can be used to date a bike: component dating

I assume the upright bars and brake levers are a conversion by a previous owner.
On one crank I see "EG" and the other has "EE". Based on the link you've shared at the vintage trek website, it looks like 1980.
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Old 03-24-18, 08:17 PM
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EG is July 1980, so the bike could be 1981. Many US manufacturers back then did not do a very good job of inventory management. Most of the time, you will also find date codes on the chain rings too. Brake calipers and both derailleurs should have codes on them too.
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Old 03-24-18, 08:49 PM
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Yes, it is almost certainly a 1981 model based on those component date codes but the serial number may allow us to increase the confidence level.
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