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Schwinn World Sport Serial Number help

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Schwinn World Sport Serial Number help

Old 10-01-14, 06:43 AM
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TrikeGeek
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Schwinn World Sport Serial Number help

I've read several forum posts about locating serial numbers on Schwinn World Sports. Someone is trying to sell me one for $50, but it's in rough shape. I'd like to take it on as a winter project, but only if it's 1984 or newer.

There is nothing stamped on the steerer badge. There is nothing stamped on the drops. The only stamping is on the bottom of the casing for the bottom bracket (man was that miserable to check). The number is GK709998 or perhaps GK709908. That doesn't match the format of any serial numbers I've seen on this board.

Any help would be appreciated.

Jim
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Old 10-01-14, 06:54 AM
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Another way to determine the year of many Schwinn bikes is to look very closely at the head badge.

On bikes made after 1982:
You can find a 4 digit serial number lightly stamped onto the headbadge.
The first three digits are the numerical day of the year,
and the last digit is the last digit of the year.
EXAMPLE:
3654 is 12/31/84 or 94 or? you determine decade.

Generally the 4 digits on the headbadge breakdown as follows: First 3 are the date of build 1 thru 365, the 4th (last digit) is the last number in the year. So "0" probably stands for 1990. If you are not sure which decade the bike is from, check the parts and graphics on the bike to the pictures in the catalog pages.
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Old 10-01-14, 07:07 AM
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Also, if it's one of the Giant built World Sports, there will be a frame date code stamped into the drive side dropout in the following format "GMMYY", where G means it was made by Giant, MMYY is the month and year the frame was manufactured. For example, G0481 would have been manufactured in April, 1981.
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Old 10-01-14, 07:09 AM
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On further review...

1. It has to be 1989 or older (since it has a 6-speed rear freewheel for 12 total speeds).
2. There is nothing stamped on the headbadge, so it's probably a foreign frame
3. The logo is unique (see picture below) and the 1988 catalog picture of the logo looks closest.

Thoughts?

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Old 10-01-14, 07:20 AM
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There are numbers stamped on the head badge on that year bike. You really have to look hard in good light to see it. Roger
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Old 10-01-14, 07:23 AM
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I understand (from these forums) that not all schwinns (those not manufactured in the US) have numbers stamped on the head badge. I've looked at this one very closely in good light and there are no numbers on the badge.
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Old 10-01-14, 07:45 AM
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As early as 1984 the World Sport had a Sun Tour 6-speed freewheel.

From the graphics, yours appears to be a black 1988 model year.

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Old 10-01-14, 08:27 AM
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BTW, the "K7" in the serial number probably means the frame was made in October, 1987, so that would confirm an early '88 model year. Check the components against the 1988 specifications to be sure.

1988 Schwinn Lightweight Specifications
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Old 10-01-14, 08:47 AM
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So, if this is a 1988 World Sport in ridable (but not pristine by any means) condition, would it be worth $50 as a backup bike?
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Old 10-01-14, 11:12 AM
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Originally Posted by TrikeGeek View Post
So, if this is a 1988 World Sport in ridable (but not pristine by any means) condition, would it be worth $50 as a backup bike?
If the frame and fork are straight, no dents, no structural rust, and neither the stem nor seatpost are stuck, I'd say it's easily worth $50.
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