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1987 Schwinn Circuit

Bike tags: Road bike | 3T | 3ttt | 564 | 754 | more tags >>
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Columbus SL, w/ SP downtube, Tange Aero ovalized stays, seamed head tube / 1987

3ttt Superleggero 40 cm / Deda Murex 120 mm quill. Orig. Cinelli 64-42 / Cinelli 1E

Tange, welded steel / Tange Falcon alloy sealed

Araya 1W / Suntour Sprint cartridge bearing/ Stainless steel 32 hole / Forte Pro DC w/thorn guard

Araya 1W / Suntour Sprint cartridge bearing/ Stainless steel 32 hole / Specialized Armadillo

Suntour Sprint 170 mm

Concor Profil, leather / JD 240 g 27.2 (replaced Sakae CR)

MKS Esquartz

Suntour Power (ratchet) / Suntour Sprint FD / cheap Shimano MTB replacement RD

Dia-Compe Royal Compe / Dia Compe Gran Compe

Suntour 14-24 7 speed (winner?)

Awesome bike bought off ebay for $ 360 ($ 325 w/o shipping). Vintage steel doesn't get much better. Sold it to a friend as soon as I tuned it up, a decision I've regretted ever since. It felt wonderful to ride, springy, stiff, and responsive. Weighed about 23 lb with bathroom scale. Could be made quite a bit lighter with some upgrades, including the original Suntour Sprint derailleur.


I bought it back from my friend in Feb. 2011. It was conveniently after my Trek 1500 (also on my site) was stolen. I upgraded it with some 3ttt handlebars I'd found off another bike, a nice stem off ebay, and a lighter used seatpost from the bike shop. One of the pictures shows it stock. I got so many flats at first that I switched to the tire combination I have now, and I've mostly been fine. It's now my main ride.

It's very maneuverable, feels agile and is comfortable to ride. The geometry is great, and it looks amazing. I'll eventually get a proper rear derailleur, but for now, the cheap replacement works really well. It weighs 23 1/2 lb as pictured.

You can see the original catalog specifications at

Serial number I635072. Says 0297 on head badge. It was built in the unprofitable Greenville, MS plant, and is one of the last American-built Schwinns.

People who friended this bike 8vpete, racerblur, Mtbfixed, maanster, the fumingator, Alvin Holbrook, cannonhugodale

nearly twins

I really like this bike, along with your other steel machines and the great notes you provide. Thanks for helping keep velospace interesting.

Beautiful bike

ATB That is an awesome Schwinn.

nice Circuit.

Great geometry on that bike. Your friend can certainly turn that into a modern-thumping rocket if h wants to...

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