08
To change from a small chain wheel to a larger
chain wheel
As is shown in the illustration, when lever A is pressed
to the mid-point of a full stroke, it clicks and there is a
change (of one gear) from a small chain wheel to the
next larger chain wheel.
Example: From the intermediate chain wheel to the lar-
gest chain wheel.
When the lever is pressed the full stroke (position 2),
there is a change from the smallest to the largest chain
wheel.
To change from a large chain wheel to a smaller
chain wheel
When lever B is pushed once, there is a one step chan-
ge from a large chain wheel to a smaller chain wheel.
Example: From the largest chain wheel to the interme-
diate chain wheel.
Lever A to change from a small sprocket to a larger
sprocket.
Lever B to change from a large sprocket to a smaller
sprocket.
Lever a to change from a small chain wheel to a larger
chain wheel.
Lever b to change from a large chain wheel to a smal-
ler chain wheel.
All levers return to the initial position when released.
Lever A
(to change from a small sprocket to a larger sprocket)
Lever A has a click stop at positions 1, 2, and 3.
1. To change one gear at a time. Example: from
3rd to 4th.
2. To change two gears at a time. Example: from
3rd to 5th.
3. To change three gears at a time. Example: from
3rd to 6th.
Lever a (to change from a small chain-ring to a lar-
ger chain-ring).
If operation of lever a does not complete the chain
ring change stroke, operate lever A again for the
distance “X”.
When lever b is operated, there is one click where
trimming (the noise preventing mechanism) enga-
ges and a second stronger click when the gear
change stroke is completed. After trimming, the
next (light) push to the right will complete the gear
change stroke to the smaller front chain-ring.
Lever b (to change from a large sprocket to a smal-
ler sprocket. When lever B is pressed once, there is
one step change from a large to a smaller sprocket).
OPERATION RAPIDFIRE PLUS
SYSTEM
OPERATION OF SHIMANO DUAL
CONTROL SYSTEM
OPERATION OF SHIMANO DUAL
CONTROL SYSTEM
Lever B (to change from a large sprocket to a smal-
ler sprocket. When lever B is pressed once, there is
one step change from a large to a smaller sprocket).
ENGLISH
09
DEUTSCH
FRANÇAIS
OWNER MANUAL 2005
To shift from a small chainring to a larger chainring
When Lever (A) is pressed once, ther is a shift of one step from a
small chainring to a larger chainring.
To shift from a large chainring to a smaller chainring
When lever (B) is pressed once, there is a shift of one step from a
large chainring to a smaller chainring.
Lever (A) initial position
Lever (B)
rear
lever b
lever a
lever b
lever a
front
click
lever a
shift one gear to next bigger
sprocket:
Example: Change from 3rd to
4th gear
shift two gears to bigger
sprocket:
Example: Change from 3rd to
5th gear
shift three gears to bigger
sprocket:
Example: Change from 3rd to
6th gear
initial
position
lever a
click
click
Operation of rear derailleur lever
Lever A: Shifts from smaller to lager rear sprocket
Lever B: Stops at positions 1, 2 and 3
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