DaVinci Designs: Grand Junction Tandem Blue Size Small 1 left

da Vinci Designs’ Independent Coasting System (ICS) offers you a riding experience both on and off road that equals or surpasses the best you’ve had on a single or tandem bike. The ICS makes for a far more intuitive, comfortable and efficient ride. This newfound ability to independently or collectively coast, pedal and position your cranks at will offers these advantages: Starting, stopping and going through corners are as easy as on a single bike. Captain and stoker can independently relax, take a drink, adjust seat position, stand for a few seconds to relieve weary sit bones, even take a moment to gaze at scenery, while the other keeps pedaling. Traversing obstacles is easier and more efficient because the captain and stoker can coordinate avoiding the obstacles while maintaining forward momentum. Asynchronous pedaling decreases strain on the final drivetrain.   Smooth and fast front shifting – The closer the chain rings are to the same size, the easier it is to shift. Other tandems, and even single bikes, are forced to use a 12-tooth gap between chain rings. Unprecedented range of gears – Four chain rings and eight rear sprockets mean 32 gears that range from 18 to 140 gear-inches. No other tandem gives you that many gears or that kind of range. More ground clearance – Nice when you lift your tandem over a curb, out of a truck, or when you are off road. Stronger, lighter chain rings that are less prone to bending Less strain on the chain while shifting   Sizing Road TandemDimensions Small Medium Large/Small Front Seat Tube C/T(A1) 20.5″(52.1cm) 22″(55.9cm) 22″(55.9cm) Rear Seat Tube C/T(B1) 16.75″(42.5cm) 18.75″(47.6cm) 16.75″(42.5cm) Front Seat Tube C/C(C1) 17.2″(45.3cm) 19.3″(49.1cm) 18.75″(47.6cm) Rear Seat Tube C/C(D1) 14.2″(36.1cm) 16.2″(41.1cm) 14.2″(36.1cm) Front Standover* 29.6″(75.3cm) 31″(78.7cm) 31.6″ (80.4cm) Rear Standover* 26.1″(66.2cm 27.9″(70.9cm) 26.4″(67.2cm) Front Top Tube(E1) 21.5″(54.6cm) 22″(56cm) 22.5″(57.2cm) Rear Top Tube(F1) 28.4″(72.1cm) 28.4″(72.1cm) 28.4″(72.1cm) Head / Seat TubeAngle 73/73 Deg. 73/73 Deg. 73/73 Deg. BB Height * 10.5″(27cm) 10.5″(27cm) 10.5″(27cm) Reach(See drawing “R”) 14.9″(37.8cm 15″(38.1cm) 15.2″(38.6cm) Stack(See drawing “S”) 21.7″(55cm) 22.9″(58cm) 23.8″(60.5cm) Frame Material Custom drawn, oversize, multi-butted, Reynolds chrome-moly steel Rear Deraileur Shimano Deore Front Deraileur Compact Triple Shifters Shimano Tiagra STI Brakes 200mm Avid BB7 Disc Front and Rear Front Bars OS 44cm Anatomic Drop Bars Rear Bars Profile Stoker 26 47cm Front Stem NVO TM-3 3D Forged OS Rear Stem Control Tech Adjustable Stoker Cranks Sugino Fuse 175mm Front, 170mm Rear Rear Cogs Sram PG-950 11-32 9sp Driving Gears Hyperglide 14-21-28 Equivalent to 28-42-56 Eccentrics da Vinci Designs Custom Hubs 40 hole Disc Brake. 145mm Rear Spacing Rims Aero Profile 40h Alex DA16 Tires Kenda Kwick Roller 26 X 1.25 Front Seatpost Kalloy Uno 31.6mm X 350mm Rear Seatpost Kalloy Uno 31.6mm X 350mm Saddles Velo Pronto and Serina Colors Metallic Red or Metallic Blue Retail Price $3495 Custom frame sizes, S&S Couplings, and Custom Paint not available on the Grand Junction Sizes: Small, Medium, and Large/Small Only