Sun Brickell Tandem 7 vs Trek Zelda 3i

Compare Specifications of Sun Brickell Tandem 7 and Trek Zelda 3i

Selected Bikes

Sun Brickell Tandem 7
Sun Brickell Tandem 7

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Trek Zelda 3i
Trek Zelda 3i

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Technical Specifications
Load Carrying Capacity -- Combined weight of bicycle, rider, and cargo of 300 pounds (136 kg)
Drivetrain K.M.C. 1/2" x 1/8", Silver (152 Links) --
Frame 6061 Series Aluminum, TIG-Welded Boomerang 6061-T6 aluminum with patented Flat Foot Technology
Stem Alloy W/Micro Adj. Angle, 25.4 x 180mm Quill x 90mm Ext., Black
Stoker Stem: Alloy, Adjustable Reach (4-Bolt Face) Black
Alloy classic
Handle Bar Steel, 28.4" Wide x 7.3" Rise x 25.4 Clamp, Black
Stoker Handlebar: Steel, 27" Wide x 10.8" Rise x 25.4mm Clamp, Black
Electra Cafe
Fork 1-1/8'' High Tensile Steel, Curved Legs, Double Eyelets Steel unicrown
Seatpost Alloy W/Integrated Clamp, 28.6 x 350mm, Black Classic alloy pillar
Grip Kraton Rubber-Gel, 130mm, 2-Tone Black & Grey Custom
Crankset -- Electra custom alloy 3-piece
Pedals Slip Resistant Top, 9/16", Black Electra retro
Chain K.M.C. 1/2" x 3/32", Silver (130 Links) KMC S1 nickel plated
Shifters Rear Shifter: Shimano Tourney 7-Speed Twist Shifter Shimano Nexus Revo 3-speed twist with optical gear display
Saddle Comfort Cruiser, Elastomer Suspension, Black Electra comfort with matching design with double-coil springs
Headset Semi Integrated, Steel, 25.4 x 44 x 30mm, Black 1" steel threaded
Derailleur Rear Shimano RD-TX35 Tourney --
Hub Front Alloy, 36H x 12G x 3/8" Bolt-On Axle, Black Shimano Nexus 3-speed internal with coaster brake, 36h
Hub Rear Alloy, 36H x 12G x 3/8" Bolt-On Axle, Black Shimano Nexus HB-IM40 with roller brake hub, alloy, 36h
Spoke 12G Stainless Steel with Brass Nipples --
Cassette -- 22t
Chainrings -- 44t steel chainring
Bottom Bracket BC1.37'' x 24TPI, Steel, Caged Bearings
Spindle: Square Taper (JIS), Bolt Type, 68 x 110mm
Sealed cartridge
Stand Alloy, Center Mount, Black Integrated kickstand
Tyres
Front Kenda Komfort 26 x 1.95", Black Wall,26" x 1.90-2.35'', Schrader Valve RetroRunner 26" × 2.125"
Rear Kenda Komfort 26 x 1.95", Black Wall,26" x 1.90-2.35'', Schrader Valve RetroRunner 26" × 2.125"
Wheel / RIM Rims: 26" x 36H x 12G, Alloy, Black
Front: 26" x 1.75 x 36H x 12G Alloy-Cruiser, Bolt-On
Rear: 26" x 1.75 x 36H x 12G Alloy-Cruiser (For Freewheel)
Painted alloy
Brakes
Front Alloy (Linear Pull) Black Shimano BR-C3000 roller brake
Rear Alloy (Linear Pull) Black Shimano coaster brake
Brake Lever Alloy (Linear Pull) Black / Silver --
Suspension
Front -- --
Rear -- --
Colors Available
Colors -- Pearl


Physical Specs
Length -- --
Weight 22.6 kg 17.04 kg
Overview
Features -- - Flat Foot Technology
Additional Details Captain Crank Left: 3-Piece Alloy, 170mm x 42T x 1/2" x 1/8", Black (For Diamond Square Cranks)
Freewheel: Shimano TZ-21 (7-Speed) 14-28T
Captain Crank Right: 3-Piece Alloy, 170mm, Black (For Diamond Square Cranks)
Stoker Crank Left: 3-Piece Alloy, 170mm x 42T x 1/2" x 1/8", Black (For Diamond Square Cranks)
Stoker Crank Right: 3-Piece Alloy, 170mm x 42T x 1/2" x 3/32", Black (For Diamond Square Cranks)
Chainwheel: Steel, Black (4-Bolt x 104mm BCD) W/Plastic Chain Cover
Pulley Adjuster:Eccentric BB Insert
Seat Clamp: Alloy, 34.9mm I.D., with Double Bolt, Black
Stoker Seat Clamp: Alloy, 34.9mm I.D., Black
Front Fender: Plastic W/Rubber Bump Guards, Silver
Rear Fender: Plastic W/Rubber Bump Guards, Silver
Fender Set: Plastic, F&R W/Rubber Bump Guards, Silver
Painted fenders
Stainless steel and anti-rust hardware
Custom bell

Which one do you think is better? And why?
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