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Help to ID Schwinn

Old 07-16-21, 08:32 AM
  #1  
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Help to ID Schwinn

I own a lot of bikes, and enjoy doing the research to ID them. I was recently was given a Schwinn that I can not identify at all. I am sure it is a franken bike, but the serial numbers (under crank),
should help solve, but I am coming up empty. Serial number is SD403145, and it has a round Chicago badge with 0904 stamped in. The components consist of:
Brakes are all 105
Crank is Surgio BT
Rear derallier is Shimano Light Action
Front Derallier is Suntour
Downtube shifters are Suntour Symetric
Seatpost is Laprade
Wheels are Mavic MA 40
Bars are Sakae Custom Bars.
Pictures will follow in a few days when I figure how to enter them
Any help would be appreciated. Bike is pretty light, and was repainted, no sign of any decals.
Thanks in advance for your help. Pete

Last edited by Ptcycles; 07-16-21 at 08:37 AM. Reason: add some info
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Old 07-16-21, 08:49 AM
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Have you gone through all of these sites?

schwinn serial numbers

C&V sub-forum would have gotten you a lot of vintage folks that know old bikes inside out that may never come to this sub-forum. Or is this not a vintage Schwinn frame? Yeah they'll crucify you if it just the bike shaped object from the company that bought the Schwinn name. So be careful! <grin>

Read this with a grin. Only 1% of this is anything remotely serious.
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Old 07-16-21, 09:14 AM
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Originally Posted by Iride01 View Post
Have you gone through all of these sites?

schwinn serial numbers

C&V sub-forum would have gotten you a lot of vintage folks that know old bikes inside out that may never come to this sub-forum. Or is this not a vintage Schwinn frame? Yeah they'll crucify you if it just the bike shaped object from the company that bought the Schwinn name. So be careful! <grin>

Read this with a grin. Only 1% of this is anything remotely serious.
Ran this serial number through every Schwinn serial # site I could find. Nothing..
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Old 07-16-21, 09:23 AM
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Well a picture might help.

But if it's one of the Post Schwinn Schwinn's, then the serial number might just be the place it was made and it's numerical place off the assembly line floor.

Many bikes don't encode much more if even that much in their SN's.

What are you wanting to do with it? Schwinn made so many of these things back in their day. Both a few very good frames and oob-goodles of run of the mill stuff for the masses.

Last edited by Iride01; 07-16-21 at 09:27 AM.
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Old 07-16-21, 09:32 AM
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I have concluded that this was produced around 1984, if I conclude correctly. I have looked through all Schwinn catalogues 1975 thru 1985. Could be a Prelude or a Super Letour. Bike will need a repaint, but will only spend money on this thing if worth it, hope it's a Prelude.
Thanks, Pete
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Old 07-16-21, 10:39 AM
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Does it have a tubing decal on the seat tube. A Prelude should have a Tenax decal
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Old 07-16-21, 10:56 AM
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I don't think either of those Schwinn's as being worth anything other than in the eyes of their beholder. The Super Le Tour was a 26 pound bike in their Recreational line up of bikes that were made in mass quantities for the masses that just wanted a bike with a cool sounding name and knew nothing else about bikes. The Prelude wasn't made in '84 AFAIK. But it's not something noteworthy either still likely a 24 pound bike.

Don't get me wrong, I rode a 46 pound Schwinn Varsity for over 35 years and it was a nice riding bike. But my attachment to that bike didn't make it worth spending money on.
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Old 07-21-21, 07:57 PM
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Here are the pictures

Originally Posted by Iride01 View Post
Well a picture might help.

But if it's one of the Post Schwinn Schwinn's, then the serial number might just be the place it was made and it's numerical place off the assembly line floor.

Many bikes don't encode much more if even that much in their SN's.

What are you wanting to do with it? Schwinn made so many of these things back in their day. Both a few very good frames and oob-goodles of run of the mill stuff for the masses.



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Old 07-21-21, 08:34 PM
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Man, I'd just ride it. That's a perfect knocking-about-town bike. Assuming you're taller than the previous owner.
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Old 07-22-21, 07:11 AM
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Originally Posted by Gresp15C View Post
Man, I'd just ride it. That's a perfect knocking-about-town bike. Assuming you're taller than the previous owner.
I agree, I'd just use it as a beater bike. The price was certainly right.
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Old 07-22-21, 07:22 AM
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Looks more to me like one of the Schwinn bikes imported from Japan instead of made in Chicago. The bikes made in the Chicago factory which I once drove by years ago were welded frames, not brazed frames like the one in the picture. Here's a post that may lead you to more information. It confirms that Schwinn was still buying bikes from Panasonic and Bridgestone in 1984. https://www.bikeforums.net/classic-v...-schwinns.html
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Old 07-22-21, 07:24 AM
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This would be a nice bike for a resto-mod conversion. 7-speed freewheel, keep the LA derailleur and swap out the front for a FD 300 or 400 series.. Cable stops mounted in place of the Suntour levers, and MicroShift 2x7 brifters. Add you favorite pedals and Bingo! It'd be fun.
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Old 07-22-21, 11:41 AM
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Originally Posted by Ptcycles View Post
I have concluded that this was produced around 1984, if I conclude correctly. I have looked through all Schwinn catalogues 1975 thru 1985. Could be a Prelude or a Super Letour. Bike will need a repaint, but will only spend money on this thing if worth it, hope it's a Prelude.
Thanks, Pete
1984 catalog only shows the LeTour models using the suntour top mount levers. No others would have the correct braze on for them.
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Old 07-22-21, 11:58 AM
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I use to venture into the C&V forum. There were a lot of people in there that knew old bikes up and down and inside out. At the time, many of them were only seen in the C&V forum.

Don't know what it's like in there now, I got over my vintage affair.
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Old 07-22-21, 04:34 PM
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Originally Posted by Milton Keynes View Post
I agree, I'd just use it as a beater bike. The price was certainly right.
The beauty of a bike like that, is that you can tune it to utter perfection, yet it will attract no attention when parked.
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Old 07-22-21, 08:11 PM
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Originally Posted by Iride01 View Post
I use to venture into the C&V forum. There were a lot of people in there that knew old bikes up and down and inside out. At the time, many of them were only seen in the C&V forum.

Don't know what it's like in there now, I got over my vintage affair.
C&V is still very active.
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Old 07-23-21, 07:28 AM
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Schwinn ID

Originally Posted by Korina View Post
C&V is still very active.
How does one get this thread switched over to C & V
Thanks, Pete
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Old 07-23-21, 07:49 AM
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Thread moved to C&V.
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Old 07-27-21, 07:39 PM
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Well, Happy days!! It looks like all the C & V folks are sleeping in late these days. It bugged me too much not to follow through on this Schwinn, so I kept on and did my due diligence, and it seems this bike appears to be a 1984 Tempo. I guess it's a wrap.
Again, thanks in advance.
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Old 07-27-21, 07:48 PM
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Le Tour, as posted earlier it's the only one with the top mount Suntour shifter.
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Old 07-27-21, 07:53 PM
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Originally Posted by dedhed View Post
1984 catalog only shows the LeTour models using the suntour top mount levers. No others would have the correct braze on for them.
This. Here's the 1984 catalog.
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Old 07-28-21, 06:58 AM
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Possible Tempo

Originally Posted by curbtender View Post
Le Tour, as posted earlier it's the only one with the top mount Suntour shifter.
What leads me to believe this is a Tempo, is the fact the wheelbase is 39 inches, whereas the Letour is 42 inches. Hope I don't have to eat crow, but it tastes pretty good with mustard.
Pete
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Old 07-28-21, 08:35 AM
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Originally Posted by Ptcycles View Post
What leads me to believe this is a Tempo, is the fact the wheelbase is 39 inches, whereas the Letour is 42 inches. Hope I don't have to eat crow, but it tastes pretty good with mustard.
Pete
Unless someone brazed a top mount on a Tempo, I'm not seeing it.
https://bikehistory.org/bikes/tempo/
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Old 07-28-21, 09:08 AM
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What's the seatpost diameter? If it's 26.6 it's a Tempo that has been reworked with a top mount shift boss. If it's 26.4 with that top mount boss it's a LeTour or a Super LeTour, which were built with unnamed double-butted chrome-moly.

As an aside, from 1986-1991 LeTours were built with True Temper double-butted tubing and took a 26.6 mm seatpost.

I recommend these scans from Waterford.
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Old 07-28-21, 09:53 AM
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Originally Posted by rustystrings61 View Post
What's the seatpost diameter? If it's 26.6 it's a Tempo that has been reworked with a top mount shift boss. If it's 26.4 with that top mount boss it's a LeTour or a Super LeTour, which were built with unnamed double-butted chrome-moly.

As an aside, from 1986-1991 LeTours were built with True Temper double-butted tubing and took a 26.6 mm seatpost.

I recommend these scans from Waterford.
My mid-80s Super Le Tour has a 26.6 seatpost and the tubing isnít unnamed.

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