SRAM DUALDRIVE Manual page 6

T H E D U A L D R I V E S Y S T E M
H O W L O N G D I D I T
T A K E T O F I N I S H
D U A L D R I V E ?
A big team of 25 engineers from all
around the world worked for two
years on this project.
H O W D I D W E T E S T
D U A L D R I V E ?
Enthusiastic trekking riders did test
the system under all weather cir-
cumstance for more than a year.
Within these tests we finetuned the
function of the system to perform to
100% of the comfort trekking riders
expectations.
W H A T P A R T S D O I N E E D
T O C O M P L E T E A D U A L -
D R I V E T R A I N ?
A DualDrive train contains the
following products:
» DualDrive hub: in either without
brake and disc brake version.
» Cassette: 11-34 teeth, 9 speed for
DualDrive 27 or 11-32 teeth, 8
speed for DualDrive 24 or 12-32
teeth, 7 speed for DualDrive 21.
» Derailleur: DualDrive 9 speed for
DualDrive 27, DualDrive 8 speed
for DualDrive 24 or DualDrive 7
speed for DualDrive 21.
6
» Shifter with Clickbox: 27 speed
with gear indication window or
24 and 21 speed without gear
indication window.
» Spoke protector: There are two
versions available: in versions for
36 or 32 spoke hole hubs.
» Crank: DualDrive cranks offer the
best performance with the Dual-
Drive system.
I B E L I E V E A D U A L -
D R I V E S Y S T E M H A S
T O B E H E A V I E R T H A N
A N O R M A L E X T E R N A L
D R I V E S Y S T E M !
In fact the DualDrive system weighs
around 250 gr less than a standard
derailleur drive train system.
W H A T I S T H E B E N E F I T
O F T H E S I N G L E S I D E D
S H I F T E R ?
It is more intuitive due to the riding
modes which explain the driver
directly what mode to use in which
terrain.
DualDrive · December 2002