Shimano GRX RX 815 Series Dealer's Manual page 9

TO ENSURE SAFETY
„ About the multi-shifting function
• Connecting this system to E-TUBE PROJECT and switching [Multi shift mode setting] to
[ON] will allow you to continuously shift gears while the shifting switch is held down.
When modifying this setting, carefully read "Items configurable in E-TUBE PROJECT" in
this dealer's manual.
„ Gear-shifting interval
• [Gear-shifting interval] can be set to one of five levels as a multi-shifting function setting
in E-TUBE PROJECT: [Very Fast], [Fast], [Normal], [Slow], or [Very Slow] (Default: [Normal]).
• A faster [Gear-shifting interval] setting will result in faster gear shifting. The rider can
quickly adjust the traveling speed and the speed at which the front chainwheel turns
("cadence" below) in response to changes in riding conditions.
However, if a gear shifting operation is performed at an insufficient cadence when the
system is set to a fast gear-shifting interval, the chain may be unable to follow the
movement of the rear derailleur, resulting in the following problems.
– The chain may slip over the tip of the cassette sprocket teeth
– The cassette sprocket may deform
– The chain may break
• Fully understand the features of the gear-shifting interval, and then set the gear-shifting
interval according to the riding conditions, such as the terrain and the riding style of the
rider.
Gear-shifting
interval
Fast setting
Slow setting
„ Lithium-ion battery
• Do not place the battery into fresh water or sea water, and do not allow the battery
terminals to get wet. If this is not observed, fire, bursting, ignition, or overheating may
occur.
• Do not use the battery if it has any noticeable scratches or other external damage. If this
is not observed, bursting, overheating or problems with operation may occur.
Benefits
• Quick multi-shifting is possible
• The rider can quickly adjust the
cadence or traveling speed in
response to changes in the riding
conditions
• Gear shifting can be performed
reliably
• A high cadence is required when
gear shifting
• Unintended over-shifting occurs
easily
• Gear shifting takes some time
9
Drawbacks