Shimano SM-JC40 Bedienungsanleitung PDF herunterladen

DIGITAL INTEGRATED INTELLIGENCE

Component Selection for 11-Speed Systems

INTRODUCTION

Dura-Ace Di2 9070 is third generation Di2, and the ﬁrst E-tube 11-speed electronic drivetrain system. In this download module

you will learn to select the proper components and wiring. The overall component selection process, installation and e-tube

functionality is quite similar to second generation Di2 6770. But there are some important differences. Four of the major

differences are:

1. Addition of 11th rear sprocket (Drivetrain not compatible with 10-speed)

2. Addition of SM-BTR2 Seat Post Battery Option; a smaller, lighter battery that installs in seat post

3. Addition of several shifter and switch options, with emphasis on Triathlon and Time Trials

4. Two Junction A Options: SM-EW90-A: 3-Port Junction, and SM-EW90-B: 5-Port Junction (S-Port required for SM-BTR2)

Obviously 9070 adds the eleventh gear. The new BTR2 Seat Post Battery places the smaller, lighter battery inside the seat post,

giving you the option for an internal or external battery. The new system also adds and accommodates a wider range of shifter

options for standard road builds, plus multiple switches for Tri- and Time Trials systems. Instead of the single Junction A con-

nection of earlier Ultegra 6770, the added features require two A Junction options: SM-EW90-A Junction A is a 3-Port connec-

tor used mostly for basic drop handlebar set-ups. SM-EW90-B Junction A is a 5-Port connector that accommodates multiple

switches for time trials and triathlon systems. Note that the earlier SM-EW67AE Junction A box is also compatible with 9070

system, but can’t be used with the SM-BTR2 internal battery.

NOTE ON ORDERING COMPONENTS

Like all bike builds, it is very important to carefully analyze your customer’s needs and detailed speciﬁcations before ordering

parts. Many components, like dual control levers and derailleurs are obvious. But the 9070 11-Speed system offers several op-

tions that are new. For example, You’ll need to determine whether you are dealing with an internal or external build; whether

you’re going to use the internal or external battery; And perhaps most important whether your customer wants a basic drop

handlebar build or a bike built for Tri- or Time Trial racing. You’ll also have to pay attention to the ﬁner specs for parts like

band adapters, bottle cage adapters and frame grommets that are either external- or internal-speciﬁc, or depend on speciﬁc

tube diameters. The point is: pay attention to details. And note that all parts are ordered separately.

When building any Di2 bike always refer to the Dealer Manual and/or component Service Instructions. They can be found at:

techdocs.shimano.com or si.shimano.com

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