Swoop D7i

The Laid-Back One

Sometimes how you get somewhere matters more than how fast you got there. For those well-traveled riders, the Swoop D7i has a 7-speed 30-74 gear-inch drivetrain that gives a relaxed ride for jaunts all over town (and a few hills too). The integrated rear hub makes for nearly maintenance-free riding, and the low-step frame means easy access no matter what your pace.

Photo may show optional accessories.
N-Fold Technology

The Faster Fold

Folding bicycle design hasn’t changed much in decades. N-Fold Technology is a small but important change that results in a faster, and more compact fold. N-Fold Technology includes new frame and handlepost geometries and spins the front wheel by 180 degrees before the central fold, resulting in a package 40 mm (1.5") shorter. Using N-Fold technology, our Eclipse and Castro bikes are only very slightly larger than the typical small wheel folding bicycle. Bicycles with N-Fold technology can also be folded – easily – in less than ten seconds.

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OCL Joint

Stronger, Better, State of the Art

The OCL Joint is a new reference in folding frame technology. It includes two new patents and everything we know about making the safest, strongest, and most durable frame joint.

  • Stronger, Stiffer — Making the hinge taller and moving the pivoting surfaces outward from the center axis more than doubles overall strength and stiffness and it’s a difference you’ll feel from your very first ride.

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DoubleTruss

Stronger by Design

Folding bikes have a sometimes deserved reputation for flexy frames. All Tern frames feature patented DoubleTruss technology which turns the rear half of the frame into a three dimensional truss so that it’s much more resistant to torsional forces. That means increased stiffness and much better power transfer from the pedals to the rear wheel. As always, the proof’s in the ride.

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Low-Step Design

Easy On, Easy Off

A low-step design makes it easy to get on and off the bike. That’s great for just about everybody, whether you’re new to biking, have an old injury, favor skirts, or are a hipster breaking in your skinny new raw selvage jeans. The top tube is only 28 cm (11”) off the ground, making it one of the lowest on the market. New cyclists will also appreciate the improved stability that comes with the lower center of gravity.

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Scuff Guard

Chainguard protection

The scuff guard protects the chainguard from bumps and knocks while keeping your feet and clothing clear of the chainring. It’s also a convenient handle for picking up and carrying the bike when folded.

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Physis 3D Handlepost

3D-Forged = Even Stronger, Stiffer, Better Ride

The handlepost is the Achilles heel of most folding bikes – it is incredibly difficult to make a handlepost that doesn’t flex like a wet noodle when you’re cranking up a hill. We don’t generally brag but the Physis 3D is in a class by itself when it comes to strength and stiffness. We literally could not break the Physis in testing and ended up turning off the test machines after we surpassed the EN standard by 400%. The Physis 3D gets its incredible strength from the 3D forging technology which creates the post from a single block of aluminum.

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Shimano Nexus 7 Drivetrain

Durable, Low Maintenance

In countries where bicycles are a primary mode of transportation –- the Netherlands, Germany, Denmark –- hub gears have always been the default choice of drivetrain. Hub gears have a number of benefits: with the gears all protected inside the rear hub shell, hub gears require almost no maintenance; they are much easier to keep properly adjusted; and you can shift from a standstill –- perfect after you’ve stopped for a red light. The Shimano Nexus 7 is one of the best hubs on the market –- 7 speeds are perfect for just about any kind of city riding and the shifting is super smooth.

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High Profile, Double-wall Rims

Pothole Perfect

We don’t recommend riding over potholes. And we really don’t recommend staring down at your front wheel if you do. But if you were to look, you wouldn’t see much. That’s the beauty of our new double-wall rims. They’re strong. The kind of strong you want when you accidently run over a pothole.

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Schwalbe Big Apple Tires

Big and Cushy

There’s an unfortunate misconception that wide, large volume tires are slow and inefficient. We were guilty of this ourselves the first time our Swiss and German product guys recommended we try the Big Apple’s. But then we rode the tires and fell in love. As you might expect, the Big Apple’s are super plush and give a great feeling of security on streets where potholes, train tracks, and drainage gates are the norm. But they are also surprisingly fast and easy rolling. Integrated puncture protection and reflective sidewalls add to urban functionality.

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Luggage Socket

Carry More Stuff

When you need to carry more stuff on your bike, just plug the optional Luggage Truss into the Luggage Socket that’s welded to the head tube of most Tern bikes. The Luggage Truss works with any bag, basket, or rack with a KLICKfix adapter. The benefit of a frame mounted luggage system (as opposed to fork or handlebar mounted) is that it doesn’t adversely affect steering.

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Detachable Rear Rack

Load 'er up, or take it off

Racks are great. They can carry tons of stuff while leaving you free and unencumbered to enjoy your ride. Sometimes, though, you might want to leave the rack off either for weight savings or for looks and that’s where a detachable rack comes in. Take it off when you don’t want it, or put it on when you need to haul some stuff. Three hex screws securely anchor the rack to the frame. The best thing is it looks like it’s just part of the bike and not an add-on.

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Specifications

General Info
Color:
Black/Grey
Grey/Orange
White/Brown
Wheel Size: 20 inch wheels
Speeds: 7
Weight: 14.25 kg (31.4 lb)
Folding Time: 10 sec
Folding Size: 38 x 79 x 72 cm (15" x 31.1" x 28.3")
Frame Sizes: One size
Gear Inches: 30" - 74"
Distance: Seatpost to Handlebar: Min: 660 mm (26.0") Max: 690 mm (27.2")
Distance: Saddle to Pedal: Min: 710 mm (28.0") Max: 950 mm (37.4")
Suggested Rider Height: 142 - 190 cm (4'8" - 6'3")
Max Rider Weight: 115 kg (254 lb)
Frame
Frame: Swoop, 7005-Al, patented OCL Joint and DoubleTruss technology, Igus bearings
Fork: Integrated, hi-tensile steel
Cockpit
Handlepost: Physis 3D, 3D forged construction, 4 patented technologies
Headset: Flux, cartridge bearings, dual-seal technology
Handlebar: BioLogic Crescent, 6061-AL
Grip/Bars Tape: BioLogic Ergo, dual-density Kraton
Saddle: BioLogic Como DLX
Seatpost: SuperOversize, 6061-Al, micro-adjust clamp
Seatpost Clamp: SuperOversize, 6061-AL
Brakes
Front Brake: V, aluminum, linear spring
Rear Brake: V, aluminum, linear spring
Brake Levers: V, aluminum bracket/lever
Brake Cable & Housing: Anti-compression housing, slick cables
Wheels
Front Hub: Mini, aluminum; BioLogic Joule II dynamo (optional)
Rear Hub: Shimano Nexus 7 freewheel or coaster
Spokes and Nipples: Stainless steel, brass nipples
Rims: High profile, doublewall
Tires: Schwalbe Big Apple, 50-406, KevlarGuard puncture protection, Reflex
Transmission
Shifter(s): Shimano Nexus 7 spd.
Crankset: Cold-forged 6061 aluminum crank arms, hand-polished
Cassette/Freewheel: Shimano for hub gear
Bottom Bracket: Semi-cartridge
Chain: 408H, 3/32"
Pedals: Folding, alloy body
Shifter Cable & Housing: Shimano
Extras
Bell: Aluminum
Chainguard: Full chainguard
Kickstand: Aluminum, Dacromet bolt
Clip System: Magnetix 2.0
Luggage Socket: Yes
Front Light: Optional: Spanninga MicroFF HiLux LED (w/dynamo hub)
Rear Light: Optional: Deluxe Rear Light
Fenders: RP PET with alloy strip, stainless hardware
Rack(s): Integrated, detachable
Lovely Bicycle!
December 9, 2012

"The bike felt comfortable and relaxed, not unlike a full sized European city bike. The fat tires drowned out bumps very nicely. Unlike some of the other non-Brompton folding bikes I've tried, the Tern Swoop felt pleasantly un-flimsy. I did not sense any play in the fold joints, nor did I feel flex in the frame while cycling. The ride quality was stable and novice-friendly."

Read the full article online here.