Jamis Beatnik vs Sun Biscayne Tandem 7

Drivetrain	--	K.M.C. 1/2" x 1/8", Black (152 Links)
Frame	Hi-Ten tubing with SST tubing diameters, tapered rear stays, rear entry dropouts with fender eyelets	High Tensile Steel, TIG-Welded
Stem	Jamis Road, 3D forged 6061 alloy, 15˚ x 60mm (47/50), 105mm (53/55), 120mm (57/59/62)	Alloy, 25.4 x 180mm Quill x 80mm Ext. x 25.4 Clamp, Black Stoker Stem:Alloy, Adjustable Reach (4-Bolt Face) Black
Handle Bar	Rise bar, aluminum, 25.4 barbore, 540mm wide, 10mm rise, 10° sweep	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	Unicrown straight blade with double fender eyelets	1-1/8" High Tensile Steel, Curved Legs, Double Eyelets
Seatpost	Jamis alloy micro-adjust, 25.4 x 350mm with alloy clamp	Alloy w/o Clamp, 25.6 x 350mm, Black
Grip	BMX Type Grip	Foam, Black
Crankset	Forged alloy crank, single 46T alloy chainring, 170mm	--
Pedals	Touring platform, steel cage/resin body	Slip Resistant Top, 9/16", Black
Chain	KMC Z410A	K.M.C. 1/2" x 3/32", Black (130 Links)
Shifters	--	Shimano 7-Speed Revo Twist Shifter
Saddle	Jamis Vintage with perforated cover	Comfort Cruiser, Elastomer Suspension, Black
Headset	Threadless, 1 1/8”	Steel, 25.4 x 34 x 30mm, Black
Derailleur Rear	--	Shimano RD-TX35 Tourney
Hub Front	--	Alloy, 36H x 14G with 3/8" Bolt-On Axle, Black (For Freewheel)
Hub Rear	--	Alloy, 36H x 14G x 3/8" Bolt-On Axle, Black
Spoke	--	14G Stainless Steel with Brass Nipples
Cassette	16T Freewheel and fix gear	--
Bottom Bracket	Sealed Cartridge	BC1.37'' x 24TPI, Steel, Caged Bearings Spindle:Bolt Type, 119mm
Stand	--	Alloy, Center Mount, Black

Front	Urban, 700 x 32c	Beach Bum 26 x 2.125", Black Wall
Rear	Urban, 700 x 32c	Beach Bum 26 x 2.125", Black Wall
Wheel / RIM	40mm Deep Dish Alloy rims with black CNC sidewall, 32H, alloy track hubs with flip/flop rear and 14g stainless steel spokes	Rims:26" x 36H x 14G, Red Front: 26" x 1.75 x 36H x 14G Alloy-Cruiser, Bolt-On Rear: 26" x 1.75 x 36H x 14G Alloy-Cruiser, (FOR FREEWHEEL)

Front	Promax long reach alloy calipers with shorty brake levers	Alloy (Linear Pull) Black
Rear	Promax long reach alloy calipers with shorty brake levers	Alloy (Linear Pull) Black
Brake Lever	--	Alloy (Linear Pull) Black / Silver

Front	--	--
Rear	--	--

Colors

Flat Olive Smoke

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Length	--	--
Weight	11.3 kg	27.2 kg

Features	--	--
Additional Details	Sizes : 48, 51, 54, 56, 58, 61cm	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