Jamis Helix A2 vs Sun Brickell Tandem 7

Compare Specifications of Jamis Helix A2 and Sun Brickell Tandem 7

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Jamis Helix A2
Jamis Helix A2

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Sun Brickell Tandem 7
Sun Brickell Tandem 7

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Technical Specifications
Drivetrain -- K.M.C. 1/2" x 1/8", Silver (152 Links)
Frame 6061 aluminum main tubes, over-sized seat tube, zero-stack head tube, over-sized stays, replaceable derailleur hanger 6061 Series Aluminum, TIG-Welded
Stem Jamis XC alloy threadless, 31.8 x 10˚ rise x 75mm (14”/16”), 90mm (18”) Alloy W/Micro Adj. Angle, 25.4 x 180mm Quill x 90mm Ext., Black
Stoker Stem: Alloy, Adjustable Reach (4-Bolt Face) Black
Handle Bar Jamis XC alloy riser, 31.8 x 20mm rise x 720mm 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
Fork SR Suntour XCE 28 DS 27.5”, coil spring, external preload adjustor, 28mm stanchions, aluminum lowers, 100mm travel 1-1/8'' High Tensile Steel, Curved Legs, Double Eyelets
Seatpost Jamis alloy micro-adjust, 31.6 x 350mm (14”) 400mm (16”/18”) Alloy W/Integrated Clamp, 28.6 x 350mm, Black
Grip Kraton Kraton Rubber-Gel, 130mm, 2-Tone Black & Grey
Crankset Forged Alloy, 36/22T --
Pedals MTB platform, hi-impact resin Slip Resistant Top, 9/16", Black
Chain KMC Z8.3, 8-speed K.M.C. 1/2" x 3/32", Silver (130 Links)
Shifters Shift levers : Shimano EF505, 2x8-speed Rear Shifter: Shimano Tourney 7-Speed Twist Shifter
Saddle Jamis ATB Sport Women’s Comfort Cruiser, Elastomer Suspension, Black
Headset Zero-stack internal cup, 8mm cone spacer Semi Integrated, Steel, 25.4 x 44 x 30mm, Black
Derailleur Rear Shimano Tourney rear and Altus front Shimano RD-TX35 Tourney
Hub Front -- Alloy, 36H x 12G x 3/8" Bolt-On Axle, Black
Hub Rear -- Alloy, 36H x 12G x 3/8" Bolt-On Axle, Black
Spoke 14G nickel-plated spokes 12G Stainless Steel with Brass Nipples
Cassette Shimano HG31, 8-speed, 11-32T --
Bottom Bracket Sealed cartridge BC1.37'' x 24TPI, Steel, Caged Bearings
Spindle: Square Taper (JIS), Bolt Type, 68 x 110mm
Stand -- Alloy, Center Mount, Black
Tyres
Front CST Patrol, 27.5 x 2.25” Kenda Komfort 26 x 1.95", Black Wall,26" x 1.90-2.35'', Schrader Valve
Rear CST Patrol, 27.5 x 2.25” Kenda Komfort 26 x 1.95", Black Wall,26" x 1.90-2.35'', Schrader Valve
Wheel / RIM Alex TD26 27.5” rims, 32H, alloy disc hubs 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)
Brakes
Front Shimano MT200 hydraulic disc, Shimano RT26 160mm rotors Alloy (Linear Pull) Black
Rear Shimano MT200 hydraulic disc, Shimano RT26 160mm rotors Alloy (Linear Pull) Black
Brake Lever -- Alloy (Linear Pull) Black / Silver
Suspension
Front -- --
Rear -- --
Colors Available
Colors Vanilla Mint
Charcoal
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Physical Specs
Length -- --
Weight -- 22.6 kg
Overview
Features -- --
Additional Details Sizes : 14”, 16”, 18” 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

Which one do you think is better? And why?
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