CAMPAGNOLO Ekar 13S Rear Derailleur User manual

CAMPAGNOLO.COM
13S REAR DERAILLEUR

REAR DERAILLEUR - Rev. 00/ 09-2020 CAMPAGNOLO COMPONENTS - TECHNICAL MANUAL
2
Always wear protective gloves and glasses while working on the bicycle.
WARNING!

REAR DERAILLEUR - Rev. 00/ 09-2020 CAMPAGNOLO COMPONENTS - TECHNICAL MANUAL
3
13s REAR DERAILLEUR
1 - TECHNICAL SPECIFICATIONS
THIS TECHNICAL MANUAL IS INTENDED FOR USE BY PROFESSIONAL MECHANICS.
Anyone who is not a qualied professional for bicycle assembly must not attempt to install and operate on
the components independently due to the risk of carrying out incorrect operations which could cause the
components to malfunction, resulting in accidents, physical injury or even death.
The actual product may dier from what is illustrated, as the specic purpose of these instructions is to
explain the procedures for using the component.
2 - COMPATIBILITY
Combinations other than those shown in the tables could cause the drivetrain to malfunction and result in
accidents, physical injury or death.
The use of components that do not belong to the correct range can signicantly reduce the overall
performance of the drivetrain, and it is therefore advisable not to mix components from old ranges with
those from the new one.
WARNING!
REAR DERAILLEUR MAX SPROCKET
(TEETH)
MIN SPROCKET
(TEETH)
EKAR 13s 44 9
REAR DERAILLEUR MAX SPROCKET
(TEETH)
MIN SPROCKET
(TEETH)
EKAR 13s 44 9
13S REAR
DERAILLEUR
13S ERGOPOWER
CONTROLS 13S CHAIN CABLES AND
HOUSINGS
EKAR EKAR THE MAXIMUM
SMOOTHNESS
MARKINGS
RD21-EK13
EP21-EKD13L4 /
EP21-EKD13R4 C13 THE MAXIMUM SMOOTHNESS
RD21-EK13 (CF)
13S REAR
DERAILLEUR
13S ERGOPOWER
CONTROLS 13S CHAIN CABLES AND
HOUSINGS
EKAR EKAR THE MAXIMUM
SMOOTHNESS
MARKINGS
RD21-EK13
EP21-EKD13L4 /
EP21-EKD13R4 C13 THE MAXIMUM SMOOTHNESS
RD21-EK13 (CF)

REAR DERAILLEUR - Rev. 00/ 09-2020 CAMPAGNOLO COMPONENTS - TECHNICAL MANUAL
4
3 - INTERFACE WITH THE FRAME
3.1 - STANDARD DROP-OUT SPECIFICATIONS
The stroke of the cage in relation to the cable throw is checked
by Campagnolo Quality Control for each single piece produced.
The distance of the rear derailleur hanger from the first sprocket
influences this stroke, so it is indispensable to stay within the to-
lerance prescribed as per the drawing (Fig. 1).
WARNING!
Campagnolo®rear derailleurs are designed to work with dro-
pouts that have the dimensions shown in Fig. 2.
For your safety and for the performance of the drivetrain
please make sure that the dropout of your bicycle has those
dimensions.
If you have any doubts please have a qualified mechanic
inspect your bike before using it.
Drop-outs outside these specifications can lead to a serious
loss of performance.
10,2 - 12,2 mm max
R max = 8,8
L
B
X
L = 24 ÷ 28 mm
X = 4 ÷ 8 mm
B = 25° ÷ 35°
R max = 1
10,2 - 12,2 mm max
L = 24 ÷ 28 mm
X = 4 ÷ 8 mm
B = 25° ÷ 35°
R max = 8,8
R max = 1
L
B
X
Fig.1 Fig.2
3.2 -FRAME SPECIFICATIONS
Fig.3
B
Height of the chain stays near
the sprocket pack: B < 7 mm

REAR DERAILLEUR - Rev. 00/ 09-2020 CAMPAGNOLO COMPONENTS - TECHNICAL MANUAL
5
4 - ASSEMBLY
4.1 - PREPARING THE FRAME
Fig.1 Fig.2
• Check that the Campagnolo® plate
(Fig. 1) is fitted under the bottom bracket
shell.
Different plates can also give rise to a
serious loss of performance.
• Chase the threads of the rear derailleur
hanger (X - Fig. 2) using a tool tap with
threading 10x26 TPI.
X
Fig.3
LA
LB
LC
LD
D
C
LB
LA
LC
C
D
LD
UT-VS030
|LA-LB| e |LC-LD| ≤ 6mm
!
Check and, if necessary, realign
the rear derailleur dropout only
be using Campagnolo®tool
UT-VS030 (Fig. 3).
NEVER straighten the dro-
pout with the rear derailleur
assembled because you could
damage the dropout and cause
irreparable damage or loss in
functionality to your rear derail-
leur.
4.2 - ASSEMBLY AND ADJUSTMENT OF THE REAR DERAILLEUR
Fig.4
• Secure the rear derailleur to the frame
with the screw (A - Fig. 4) using a 5 mm
Allen wrench.
!Tightening torque : 10-12 Nm
(89-106 in.lbs).
10-12 Nm
(89-106 in.lbs)
A

REAR DERAILLEUR - Rev. 00/ 09-2020 CAMPAGNOLO COMPONENTS - TECHNICAL MANUAL
6
Fig.5
• During assembly, ensure that the rear
derailleur tooth (B - Fig.5) is resting
correctly on the tooth in the drop-out (C
- Fig. 6).
!Tightening torque : 10-12 Nm
(89-106 in.lbs).
10-12 Nm
(89-106 in.lbs)
Fig.6
B
CB
C
Fig.7
• Carry out this operation with the chain
positioned on the smallest sprocket
(Fig. 7) of the freewheel and with the
Ergopower™ control button set to zero
(Fig. 8).
Fig.8
Fig.9
• Turn the screw (Fig. 9) until the centre
section of the upper wheel is perfectly
aligned with the first sprocket (Fig. 10).
Fig.10

REAR DERAILLEUR - Rev. 00/ 09-2020 CAMPAGNOLO COMPONENTS - TECHNICAL MANUAL
7
Fig.11
• Use only “The Maximum Smoothness”
cables and housings, and ferrules like the
ones shown in Fig.11.
• Pay particular attention not to drag the
cables of the rear derailleur and of the
front derailleur on the metallic or sharp
edges to prevent damage to the Teflon™
surface.
Fig.12
!Cables and casings do not
require lubrication since they
are supplied already lubricated.
Fig.13
• If the cable is damaged, please replace
it before riding your bicycle. If the casing
is too short, rear derailleur operation will
be affected (Fig. 13).
• Check the length and, if necessary,
shorten the casing.
Take care to cut it straight across without
altering the configuration of the casing
and without damaging the cable in any
way (Fig.12).
Fig.14
• Insert the cable into the cable tension
adjuster (E - Fig.14), and pass it through
the appropriate cam (F - Fig.14) and the
recess (G - Fig.15) in the rear derailleur.
Fix the cable in place with the locking
screw, tightening to a torque of 5 Nm
(44 in.lbs).
Fig.15
5 Nm
(44 in.lbs)
G
E
F

REAR DERAILLEUR - Rev. 00/ 09-2020 CAMPAGNOLO COMPONENTS - TECHNICAL MANUAL
8
Fig.16
• Cut the excess cable to about 2 cm
from the fixing screw and protect the end
of the cable with a cable protector.
• Position the rear derailleur on the smal-
lest sprocket and check that the screw
(Fig.16) is correctly adjusted so that the
upper wheel is in line with the teeth of
the sprocket (Fig.17).
Fig.17
Fig.18
Fig.19
• The correct positioning of the upper
wheel is achieved as follows:
• Position the chain on the penultimate
sprocket, the one next to the largest
sprocket (Fig.19).
• Turn the screw (Fig. 20) that adjusts the
position of the rear derailleur.
Fig.20
!
Check that the screw (Fig. 18) is
correctly adjusted: when opera-
ting the rear derailleur control
with the chain on the largest
sprocket, the internal derailleur
rocker must NOT come into
contact with the spokes.

REAR DERAILLEUR - Rev. 00/ 09-2020 CAMPAGNOLO COMPONENTS - TECHNICAL MANUAL
9
Fig.21
• The upper wheel must be at the cor-
rect distance from the largest sprocket
(Fig.21).
• The MAXIMUM distance between the
tip of the teeth of the upper wheel and
the tip of the teeth of the largest sprocket
must be MAX 3 mm.
• The MINIMUM distance is the point at
which, when the rear derailleur is ope-
rated, this makes a noise because the
wheel is too close to the sprockets.
MAX. 3 mm
MIN. noise
Fig.22
• Position the chain on the 5TH sprocket
counting from the smallest.
• Turn the cable tension adjuster (E - Fig.
22) until perfect alignment is obtained
between the centreline of the top roller
and the centreline of the 5TH sprocket.
• If centering between the centrelines of
the roller and the fourth sprocket is not
correct, turn the adjuster (E - Fig. 22)
counterclockwise to shift the rear derail-
leur inwards. Turn clockwise to shift the
rear derailleur outwards.
• Check that when the shifter is actuated
accordingly, the rear derailleur positions
the chain on the largest sprocket; if this
does not occur, turn the screw (Fig. 23)
repeatedly (slackening it until the chain
is positioned on the largest sprocket
without overshifting).
Fig.23
G
E
Derailleur adjustments must be performed by skilled personnel: a badly adjusted derailleur can result in
an accident, personal injury or death.
WARNING!

REAR DERAILLEUR - Rev. 00/ 09-2020 CAMPAGNOLO COMPONENTS - TECHNICAL MANUAL
10
4.3 - JOCKEY CAGE LOCK/UNLOCK BUTTON
If you have to remove the rear wheel, it is useful to be able to lock the jockey cage in the rearward position; follow the steps below
for locking and subsequent unlocking.
Fig.1 Fig.2
G
• LOCKING:
- Rotate the rear derailleur clockwise
(Fig. 1), until it locks into rearward posi-
tion (Fig. 2). The jockey cage lock button
will engage automatically.
You can now follow the procedure for
removing the rear wheel.
Fig.3
G
• UNLOCKING:
- After following the rear wheel assem-
bly procedure, rotate the rear derailleur
clockwise slightly and simultaneously
press the release button, accompanying
the rear derailleur back into the operating
position (Fig. 3).