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1983 Schwinn Le Tour 12 speed 31 year owner with crank and restore questions

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1983 Schwinn Le Tour 12 speed 31 year owner with crank and restore questions

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Old 03-24-14, 07:43 AM
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Le_Tour1983
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1983 Schwinn Le Tour 12 speed 31 year owner with crank and restore questions

31 years ago I spent my last few hundred to buy a bike to get me to work to make some money since I didn't have enough cash for a car. I pedaled that 1983 Schwinn Le Tour Black Metallic 12 speed for 18 months through almost two Maryland winters. My midnight 4 day a week night job was 17 miles away and my 6 days a week day job was 2 miles away. I managed to get a car again before snow came our way that year just a few day before Christmas. The Le Tour wasn't rideable at that point and I have held onto it for all these years for all the fond late night memories I had pedaling for 45 minutes in 25 degrees freezing temperatures and getting soaked in Spring showers.

I'm going to get it rideable again. It only needs one inner tube and finish an incomplete crank ring repair. Crank puller on order. I may even do a full restore with paint job. It has very little rust to clean with the buffer and tumbler. I even have a OE decal set from when I bought it. It is all original except maybe the crank set and pedals. I remember someone backed over it with their car once when I was looking the other way and bent a wheel which I had the LBS repair. I don't recall if it was the front or back. I don't recall any other damage from that incident. Another time I recall standing up on the pedals real hard and folded a crank ring beyond the point of straightening it back out. I bought replacement parts but never finished the repairs mostly because I did not have or know about a crank puller.

Serial on frame SF307671 head stamp 1883
Large Ring stamped - ANLUN 52-42 SUPER DURALUMIN
Crank arms stamped- Aero Cold forged on outside and Duralumin Forged 170 on the inside
Araya rims with Schwinn Passage tires 27x1 1/4 tires
Derailleurs- appear to be original from my research, Shimano Altus ST front derailleur (N308?) and Shimano Altus ST rear derailleur (N307?)

Which crank ring set was original? Aero 5 with 1 piece large ring/guard? And my current Aero cranks? What is square tapered I see on parts listing? What teeth numbers work for this 12 speed and what is the difference with different teeth combinations?
When I folded the crank ring, I don't recall what exactly I took off and replaced. Believe the spindle is original and complete. I sort of recall at one time how difficult the Aero 5 chain guard was when the chain would jump off and I would have to dig it out from behind the chain guard to put it back on. Other than eBay, where could I find the Aero 5 ring set. From what I read the Aero 5 was entry level and considered average or less.

Any Schwinn parts diagram with part numbers available for 1983?

What do you all do for artwork when repainting? Water slide decals available? eBay results show little and from what I read my 31 year old original decals will probably disintegrate. How about the other 2 stickers, the 4130 chrome molly sticker near the crank and the yellow caution sticker on the frame near front fork?

Before pictures coming soon. After cleanup pictures later.

Thanks!
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Old 03-24-14, 08:07 AM
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David Newton
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Hey Newbie, not to be rough, but you can't ask questions if you don't post pictures.
Unwritten rule, I just made it up.
Oh, and a warm and hearty welcome to the C&V!

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Old 03-24-14, 02:39 PM
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Originally Posted by Le_Tour1983 View Post
What do you all do for artwork when repainting? Water slide decals available? eBay results show little and from what I read my 31 year old original decals will probably disintegrate. How about the other 2 stickers, the 4130 chrome molly sticker near the crank and the yellow caution sticker on the frame near front fork?!
This is one reason I avoid repainting. I have learned to appreciate patina. And most bikes, with some judicious touchup can be made presentable, saving all of the original graphics and a ton of $$$. Paint would have to be really bad for me to repaint.

On chain rings, it all starts with measuring the bolt circle diameter (BCD). Lots of information out there in that regard. I can typically pick up a nice, used crank set for less than the cost of one new chain ring, so thats the way I go. Chainrings last a very, very, long time. Freewheels and chains wear out much faster. Endless number of 6 speed freewheels out there.

I just looked at the on line catalog. If that is the crankset you have (alloy with steel chain rings), its pretty doggy. When it comes time to replace, I would upgrade to something better. Find a co-op or look for one used here in the marketplace.


I don't understand folding the crank ring. You have me on that one.
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Old 03-24-14, 03:42 PM
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Here are the specifications for the 1983 Schwinn Lightweight models. It is a huge (a little over a megabyte) jpeg file.

1983 Lightweight Specifications

The Le Tour crank is Sugino Aero 5 SAL-WB 170mm crank arms 40-52T chainrings Alloy.
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Old 03-24-14, 04:56 PM
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Stan knows his Schwinns for sure. All of the Aero 5s I have owned had alloy arms and body, and steel chain rings. Similar to the ebay auction below. I guess you could have alloy rings on it, but I have always seen steel on this crankset.

Whenever I get them, I donate them to the co-op. Maybe I should keep the next one…

One thing about steel rings, if you have them, they are super durable.



Sugino Aero 5 Crankset Vintage 52 42 Alloy Dust Chainring Square Tapered Bike | eBay
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Old 03-24-14, 06:03 PM
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Originally Posted by wrk101 View Post
Stan knows his Schwinns for sure.
In this case, I was just reading the specs, Bill.

Looking at the 1983 Parts and Accessories catalog, it appears the crank for the Le Tour is part number 56 219. The catalog describes it as "Complete Sugino 3-piece crank set, forged alloy with chrome moly spindle, 6-3/4" (170mm) crank arms, 1/2" x 3/32" sprockets (40-52T) and all BB parts. As used on Le Tour models."

I saw the forged alloy with no mention of the chainring material and assumed they were also alloy.

Mea culpa!



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Old 03-24-14, 10:13 PM
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If you have the 21.1 quill on this bike, be kind and gentle to it. They are hard to find and non-standard from the 22.2.
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Old 03-26-14, 01:33 PM
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Stan, you are right 99.99999999999999999% of the time. And your generosity with your collection of Schwinn information, along with Tom Findley, as provided many of us with an endless source of information on vintage Schwinn knowledge.

In this RARE case, I had personal experience with this model and its crankset. Rare indeed.
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Old 03-26-14, 08:31 PM
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The '83 LeTour Luxe that my good friend bought new ended up in the shape shown on my avatar, but I still have the original crankset stashed somewhere. As Stan said it's a Sugino 52-40 with well-worn rings. The rings have a 110mm bolt circle diameter (BCD), which are pretty readily available. I'd be willing to "peddle" the crank.
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Old 06-15-14, 09:31 AM
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Been meaning to follow up and thank all for the helpful information especially Stan the man.

Disassembled little to polish and rub off three decades of oxidization on the rack, rims and seat pole.
Visually the rack was in the worst condition so I spent much time on it till my hands ached. Looks great!
Polished rims, repacked front hub, replaced tires/tubes/liners, bought OE crank and reflector, packed bottom bracket and cleaned cluster gear.

Climbed on and rode it around the neighborhood in April for first time in about 30 years. Worked on truing the rear some with more to do.
Thinking of complete tear down and restoration with a paint job but only if I can silkscreen/stencil replicate the artwork ... when time allows.
Also picked up a 2001 Schwinn Mesa as a backup bike and for different terrain.

Again ... thanks all for the input!
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Old 06-15-14, 09:44 AM
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Hey! Thanks for the pictures. I like what I see, but I don't see much. Look at the other pictures here in C&V to get an idea of what you can show us.

It's nice that the bike has a generator. Buy some modern LED generator (aka dynamo) lights and use the old generator. It will work well. I've done this on two bikes.

As Thrifty Bill said, restoring a paint job is more trouble than it's worth, and you might not like the results either. If you show us the paint in detail, we can give you tips on how to improve it without stripping.
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Old 06-15-14, 10:05 AM
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Welcome to the forum Le_Tour1983. If your posting pictures, I'd love to see pictures of that Lemon Stingray..
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Old 06-15-14, 10:44 AM
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Not in a hurry to paint the original but it is on my mind.
Noglider ... these portraits any better?
romperrr ... the lemon Stringray is one I had in my youth but have the clearest and fond memoires of.
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Old 06-28-18, 11:08 AM
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Question RE 1983 Lightweight Specifications

Originally Posted by Scooper View Post
Here are the specifications for the 1983 Schwinn Lightweight models. It is a huge (a little over a megabyte) jpeg file.


The Le Tour crank is Sugino Aero 5 SAL-WB 170mm crank arms 40-52T chainrings Alloy.
Stan, Would you be able to email or pm me the 1983 Lightweight Specifications file? When I open it from the forum, it's quite blurry and when going via photobucket it won't open up. I have a 1983 Schwinn Le Tour Luxe that I've had since 1984 or 1985. That sheet would be a big help! I bought the bike at a police sale and someone had replaced the original 6 gear freewheel with a 5 gear. I'd like to install an oem 6 gear freewheel if possible to have all twelve speeds available.

Sorry, I had to remove the link from the post, because the forum won't let me send a message with a url since I have fewer than ten posts. I'm new so haven't had any yet. I'm hoping you can find the file without that.

Thanks!
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Old 06-28-18, 11:40 AM
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Personally I see no reason to repaint or mess with decals. And as 31-year restorations go, this one looks relatively painless.
I suspect you're gonna have a pretty good time. Enjoy!

...And welcome to BikeForums.
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Old 07-12-18, 11:53 AM
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Fahrenheit531, Thanks for the welcome. Actually, I'm not the person who was looking at repainting. I was hoping Stan/Scooper would be able to email or pm me the 1983 Lightweight Specifications file he posted on 3/24/14. When I click on the link, the image is to blurry for use. As for pm'ing him, the forum won't let me because I have fewer than ten posts. I've a 1983 Schwinn Le Tour Luxe for which I'd like to find an oem or comprable six speed freewheel. The spec sheet Stan shared shows the details I need.
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