Electric shift tool

The button can also be pressed again and the light will go off, and the shift mode switch to change to full indexing mode.

When the shift switch is in adjustment mode, shifting at the lever will move the derailleur a very small amount and then hold that position.

Each push on the shift lever moves the guide pulley position approximately 0. The entire range is approximately 4. The derailleur and shifting system holds that adjustment when returned to full index shifting mode. Pedal the bike and sight the upper pulley relative to the cog Figure If there is a rattle from the chain of the chain being too far in or out, make the appropriate adjustment at the lever, pushing lever only one or two times, and then checking again.

Press the shift mode button again and the shift mode switch will change back to normal shifting mode. Shift to other gears and test the setting. The front derailleur uses a strong solenoid to move the cage from inner to outer positions. Work with care to not crush fingers between cage and ring while shifting. The adjustment screws of the braze-on model are shown in Figure During installation, the lower edge of the cage should be set approximately 2mm over the largest chainring.

Unlike the rear derailleur, the front derailleur can be pulled by hand outward to set height. Set the L-screw to the small ring by first shifting the rear derailleur to the largest cog. This will trim the front cage inward. Turn the limit screw clockwise to move the cage outward until the inner cage of the derailleur begins to contact the chain, and then loosen until there is a slight gap between the chain and inner cage Figure To set the H-limit screw, shift the rear derailleur to the smallest cog, and shift the front derailleur to the largest chain ring.

The H-screw is underneath the linkage. Turn the H-screw clockwise to move the cage outwards. Turn the H-screw counter-clockwise to move the cage inward Figure This may seem counter-intuitive to mechanics accustomed to cable operated front derailleur systems.

The lithium ion battery will require recharging with use as the battery will drain with time and after a number of shifts. There are two places to check the remaining battery charge. One is the flight deck display at the handlebar harness. A second method is to press and hold any shift switch until an indictor light comes on at the handlebar harness.

The upper indicator light will flash when the button is pressed. A full battery charge will show a green light for 2 seconds. If there is no charge in the battery, the derailleurs will stay in the last gear they were shifted to. The battery may take approximately 1. Shimano offers a diagnostic electronic system checker for the Di2 system. When disconnecting the sockets from the receivers never pull directly on the wire Figure Use the special tool to leverage the plug out of the socket Figure The rear derailleur has a built-in protection feature to help in case of a crash.

During an impact, the connection between the solenoid and the parallelogram opens, and the rear derailleur will no longer operate. This is designed to protect the system, for example, when the bicycle falls over. To reset the system, press the button on the handlebar switch SM-EW79A for at least five seconds to re-connect the solenoid to the parallelogram.

Double check the shifting and fine tune the derailleur, using the shift adjust mode as necessary. Front Derailleur Adjustment View Article. Rear Derailleur Adjustment View Article. Trade Resources. Figure 2. The "support bolt" will push against the frame to rotate the cage angle Figure 4.

Gold paint mark from hex wrench marks placement of protection pad Figure 6. Setscrew correctly striking protective pad. Figure 8. Socket receiver inside lever for shift wire connector plug Attach the front wire harness to the shifters. Figure 9. Secure electrical wire to minimize chance of damage.

Excessive wire length may cause problems Figure Wrap any excess wrap close to lever when possible. Front wiring harness Figure Secure excess wire to avoid it being caught or pulled. Routing options are performed at the bottom bracket guide Figure Wire harness guide is bolted in place of conventional bottom bracket guide Figure Wires are held to frame by adhesive tape Figure Supplement tape with zip-ties as necessary. Install battery into bracket and close lever Figure Switch used to move chain to large sprockets switch Y Figure The outer shift limit H-screw must contact linkage Figure The inner shift limit L screw must contact linkage.

Location of adjustment screws Figure Inspect the gap between chain and cage. Battery charger There are two places to check the remaining battery charge. The diagnostic electronic system cycler SM-EC79 When disconnecting the sockets from the receivers never pull directly on the wire Figure Never pull directly on wire Figure Back To Top.

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Inline Feedbacks. Reply to rentedshoes. Reply to edge. I could see a shop that does a lot of suspension work using it. Mark H. Reply to Gillis. Jeff hotmail. Now that Shimano, SRAM, Campagnolo, and FSA all make electronic drivetrains, and the technology has been tested, tweaked and developed in the last decade, almost every high-end bike comes with a charging cable.

All of that begs the question: Should you make the shift? Electronic shifting is controlled by firmware, but no company has released a firmware version that allows for adjusting the number of drivetrain speeds. For SRAM, similar rules apply. Most frames made since have internal routing with cable stops that can be swapped for mechanical or electronic cables.

You may have to buy new stops through a dealer. If your bike is, ahem, of a certain age say, pre , then it may be better to look at a whole new bike, says Chad Nordwall, owner of Bay Area shop Above Category Cycling.

Shimano makes no outright claims on battery life, says Legan, citing the broad range of terrain and conditions riders encounter. Quarterly is probably enough for most riders.

Far more common: A dead battery results because they last so long you forgot to charge it. Tip: Set up a regular calendar reminder for, say, Friday evenings at the end of the month.

SRAM, the newest entrant, says its batteries last at least 15 hours—and up to 60—on a full charge. Plus, the front and rear derailleur batteries are interchangeable.