Sun Biscayne Tandem CB vs Trek Zelda 3i

Compare Specifications of Sun Biscayne Tandem CB and Trek Zelda 3i

Selected Bikes

Sun Biscayne Tandem CB
Sun Biscayne Tandem CB

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Trek Zelda 3i
Trek Zelda 3i

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Model:

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Technical Specifications
Load Carrying Capacity -- Combined weight of bicycle, rider, and cargo of 300 pounds (136 kg)
Frame High Tensile Steel, TIG-Welded Boomerang 6061-T6 aluminum with patented Flat Foot Technology
Stem Alloy, 25.4 x 180mm Quill x 80mm Ext. x 25.4 Clamp, Black Alloy classic
Handle Bar Steel, 28.4" Wide x 7.3" Rise x 25.4 Clamp, Black Electra Cafe
Fork -- Steel unicrown
Seatpost -- Classic alloy pillar
Grip Foam, Black Custom
Crankset -- Electra custom alloy 3-piece
Pedals Slip Resistant Top, 9/16", Black Electra retro
Chain K.M.C. 1/2" x 1/8", Black (130 Links) KMC S1 nickel plated
Shifters -- 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 Steel, 25.4 x 34 x 30mm, Black 1" steel threaded
Hub Front Shimano CB-E110 Coaster Brake, 36H x 14G, Black Shimano Nexus 3-speed internal with coaster brake, 36h
Hub Rear Alloy, 36H x 14G x 3/8" Bolt-On Axle, Black Shimano Nexus HB-IM40 with roller brake hub, alloy, 36h
Spoke 14G Stainless Steel with Brass Nipples --
Cassette -- 22t
Chainrings -- 44t steel chainring
Sprocket 19T x 1/2'' x 1/8'' --
Bottom Bracket -- Sealed cartridge
Stand Alloy, Center Mount, Black Integrated kickstand
Tyres
Front Beach Bum 26 x 2.125", Black Wall RetroRunner 26" × 2.125"
Rear Beach Bum 26 x 2.125", Black Wall RetroRunner 26" × 2.125"
Wheel / RIM Rims: 26" x 36H x 14G, Red Painted alloy
Brakes
Front Alloy (Linear Pull) Black Shimano BR-C3000 roller brake
Rear Shimano CB-E110 Internal Coaster Brake, Black Shimano coaster brake
Brake Lever Alloy (Linear Pull) Black / Silver --
Suspension
Front -- --
Rear -- --
Colors Available
Colors Metallic Red Pearl


Physical Specs
Length -- --
Weight 27.2 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)
Captain Crank Right: 3-Piece Alloy, 170mm, 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, Silver Painted W/Plastic Chain Cover
Pulley Adjuster:Eccentric BB Insert
Seat Clamp: Alloy, 28.6mm I.D., with Double Bolt, Black
Stoker Seat Clamp: Alloy, 34.9mm I.D., Black
Front Fender: Steel, W/Single Strut, Painted
Rear Fender: Steel, W/Single Strut, Painted
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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