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 Tandem Dimensions |
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 Tube Angle |
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 |
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