NuVinci Nfinity Series User manual

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TECHNICAL OWNER MANUAL
TECHNICAL OWNER MANUAL
NUVINCI OPTIMIZED CVP WITH
NFINITY CABLE SHIFT SYSTEM
MANU-NFIN-00
EN
DE
30-58
1-29
59-88
89-116
NL
FR

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Table of contents
1. NuVinci Optimized products 3
1.1 Nfinity 330TM and Nfinity 380TM Series Drivetrains 3
1.2 The NuVinci Optimized CVP 3
2. Nfinity operation & care 4
2.1 Shifting Nfinity Systems While Riding 4
2.2 Shifting Nfinity Systems While Stopped 4
2.3 Adjusting Cable Slack 5
2.4 Disconnecting the Rear Wheel 6
2.5 Fitting the Rear Wheel 7
2.6 Cleaning & Lubrication 8
2.7 Wear Parts & Repair Work 8
3. Nfinity assembly of components 9
3.1 Wheelbuilding 9
3.2 Installing the Sprocket 10
3.3 Nfinity Hub Interface
Compatibility & Orientation 11
3.4 Installing the Nfinity Hub Interface 12
3.5 Installing the Shifter 13
3.6 Installing Shift Cable Housing 14
3.7 Installing Shift Cables and Hardware 15
4. Nfinity service instructions 16
4.1 Replacing Shifter Cables 16
4.2 Resetting CVP to Full Overdrive 18
4.3 Servicing or Replacing Freewheel 20
4.4 Removing Brake Configurations 21
4.5 Installing Brake Configurations 22
5. Nfinity technical data 23
5.1 CVP Specifications 23
5.2 Approved Gearing 24
5.3 Exploded View 25
5.4 CVP & Nfinity Shifter Dimensions 26
6. Intellectual property notice 27
7. Warranty 28
European Support and Service 29
North American Office 29

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1.1 Nfinity 330 and Nfinity 380 Series
Drivetrains
The Nfinity series of mechanical shifting
drivetrains are the first continuously variable
systems for bicycles, allowing the rider to
control the ratio of NuVinci Optimized CVPs
simply by rotating the shifter grip.
Static (Nfinity C3TM) or dynamic indicators
(Nfinity C8TM and Nfinity C8sTM) show ratio as
a simple graphic; a hill for slower speeds and
a flat for faster speeds. Since there are no
fixed gears, the exact ratio is determined by
the rider’s comfort level. Ratio changes can be
made even while pedaling under high torque.
1. NuVinci Optimized products
1.2 The NuVinci Optimized CVP
The NuVinci Optimized technology is a
continuously variable planetary (CVP)
drivetrain offering an infinite number of ratios
inside its wide ratio range.
Ratio changes occur within the hub smoothly
via internals that are sealed for life and
maintenance-free.
NUVINCI OPTIMIZED PRODUCTS
The HarmonyTM series of intelligent drivetrain
systems are the first continuously variable automatic
shifting systems for bicycles.
Review the Harmony online manual if your bicycle
is configured with the Harmony series of electronic
shift systems.

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2. Nfinity operation & care
2.1 Shifting Nfinity Systems While Riding
• Shifting into low ratios for starting or
climbing
- Using the Nfinity grip, rotate in the
direction indicating more of a “hill” (A)
• Shifting into high ratios for higher speeds
- Using the Nfinity grip, rotate in the
direction indicating more of a “flat” (B)
2.2 Shifting Nfinity Systems While
Stopped
• NuVinci Cycling CVPs cannot be shifted
completely through the ratio range while
stopped
• 50-70% of the shift range is typically
accessible, with the remainder accessible
with very little pedal rotation
NFINITY OPERATION & CARE
A
B
A
B

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NFINITY OPERATION & CARE
C
D
2.3 Adjusting Cable Slack
All controller related explanations show for
the C8 controller apply to all other controllers.
• Cable slack can be adjusted with the
barrel adjusters (C) at the shifter.
• Cable slack can be determined by pulling
lightly on the cable housing (D) at the
shifter and noticing any slack.
- 0.5mm of slack is ideal. Cable slack of
more than 2.0mm may cause decreased
shift performance and shift cable durability.
• For rear wheel removal, additional cable
slack may be desired to ease shift cable
hardware removal, which can be obtained
with the barrel adjusters.
0,5mm

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NFINITY OPERATION & CARE
2.4 Disconnecting the Rear Wheel
1. Shift to a position that allows easy access
to the shift cable hardware.
2. Remove shift cable hardware following
steps and .
3. Loosen and/or remove the axle nuts (A)
and the no-turn washers (B) on both sides.
- For rim or roller brake applications,
disconnect the rear brake according to the
manufacturer’s instructions.
4. Remove the rear wheel.
1 2 3
1
2
3
A
B

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NFINITY OPERATION & CARE
2.5 Fitting the Rear Wheel
1. Place the rear wheel into the rear frame,
making sure not to obstruct shift cables.
2. Slide one no-turn washer (A) each onto
each axle end. The serrations of the no-turn
washer must bear against the dropout
of the frame. The rectangular boss must
engage in the dropout of the frame.
3. Mount the axle nuts (B). Tightening torque
30-40 Nm (266-350 in-lbs).
- For rim and roller brake applications,
connect the rear brake according to the
manufacturer’s instructions.
Improper installation of the no-turn
washer may result in damage to the
dropout and the hub.
Over-tightening may damage parts.
Under-tightening can result in the axle
sliding in the dropouts.
4. Install the shift cable hardware following
steps and
1 2 3
1
2
3
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A
B

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NFINITY OPERATION & CARE
2.6 Cleaning & Lubrication
• Your NuVinci Optimized components are
sealed and well protected from the external
environment. However, do not use water
under pressure (such as pressure washers
or water jets) for cleaning to prevent
malfunctions due to water penetration.
• During the winter, you should clean your
bicycle in shorter intervals so that winter
road salt cannot cause any damage.
• Do not use aggressive cleaners
• The NuVinci Optimized CVP is provided
with permanent lubrication and the CVP
internals are maintenance-free for the life
of the product.
• The NuVinci Optimized CVP internal
freewheel mechanism is serviceable.
• Regular lubrication will extend the chain’s
service life.
2.7 Wear Parts & Repair Work
• Handlebar grips, sprockets, and bike
chains are wear parts. Please check
these parts regularly and replace them as
necessary.
• Only a qualified bike dealer should
perform any necessary work on the
NuVinci Optimized CVP, Nfinity shift
system, or Harmony shift system.
• Unauthorized work on your NuVinci
Optimized CVP, Nfinity shift system, or
Harmony shift system could endanger you,
and your warranty may become void.
• Please contact your qualified bike dealer
regarding any questions or problem you
may have.
• Refer to our website for additional service
information at
www.nuvincicycling.com/service

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3. Nfinity assembly of components
NFINITY ASSEMBLY OF COMPONENTS
3.1 Wheelbuilding
• The anti-shift retainer (A) provides 135mm
spacing, and should remain on the CVP
during lacing and wheelbuilding.
- Maximum spoke diameter is #13/
2.34mm
- Minimum spoke diameter is #14/
2.00mm
• Suggested lacing is a 2-cross pattern for
26 inch and 700c wheels.
-Use a 2-cross pattern only if the rim allows
the nipples to be effectively in-line with the
spokes.
• For 24 inch or smaller wheels a 1-cross
pattern is suggested.
• Radial lacing is not recommended.
A
Installation and repairs must be made
by a qualified bicycle mechanic.
This section assumes a level of
knowledge and skill consistent with
that of an experienced bicycle
assembler or bicycle mechanic.
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135 mm

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NFINITY ASSEMBLY OF COMPONENTS
A
B
C
D
• See section 5.1 (for chainline and beltline
specifications)
• The NuVinci Optimized CVPs are
compatible with 16 to 28 tooth sprockets.
See section 5.1 for sprocket ratio
requirements and approved gearing
3. If a Nfinity Hub Interface is not installed
immediately following the sprocket, replace
the anti-shift retainer (A)
3.2 Installing the Sprocket
1. Remove the anti-shift retainer (A) by pulling
firmly away from the NuVinci CVP
2. Install a standard 9-spline 3/32 inch
(2.3mm) sprocket (B) with the flat side
facing the CVP, followed by the supplied
sprocket spacer (C, if required), and secure
with the sprocket snap ring (D).
• The sprocket spacer is intended for
sprockets that are 3/32 inch (2.3mm) thick
at the inner diameter. If the inner diameter
is 0.17-0.18 inch (4.3-4.5mm) thick, the
spacer should not be used.
Use of incompatible chains can
result in interference with the Nfinity
Hub Interface and damage to CVP
components and may result in a dangerous
condition for the rider.
NuVinci Optimized CVPs are
incompatible with 1/8 inch
(3.18mm) single-speed chains and
sprockets that are flat on at least one side.
Use 3/32 inch (2.3mm) chains and sprockets
only.
If the sprocket is asymmetric, incorrect
installation can result in interference
with the Nfinity Hub Interface and
damage to CVP components and may result
in a dangerous condition for the rider.
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Nfinity 330 systems are compatible
with mid-motor eBike systems rated
at 250W or less. See section 5.2 for
approved gearing tables.
Nfinity 380 systems are compatible with mid-
motor eBike systems rated at 350W or less.
See section 5.2 for approved gearing tables.
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D
B
NFINITY ASSEMBLY OF COMPONENTS
6.6 HarmonyTM Hub Interface
Compatibility & Orientation
1. Ensure you have the correct Nfinity Hub
Interface for your NuVinci Optimized CVP.
• N330TM CVPs have a yellow dot (A), and
are compatible with Nfinity 330 Hub
Interfaces designated with a light grey
interior (B).
• N360 and N380 CVPs have a black
colored shift driver (C), and are compatible
only with Nfinity 380 Hub Interfaces
designated with a black interior (D).
2. Use the uninstalled Nfinity Hub Interface (E)
to determine the desired orientation
• Typical orientation is forward, parallel to
the chain stay or seat stay cable routing.
• Move the Nfinity Hub Interface along the
dropout to ensure clearance at different
axle positions.
3. With the Nfinity Hub Interface oriented
correctly inside the right dropout, the
installation angle (F) is the indicated
angle of the dropout (20 degrees in this
example).
• Use the markings on the Nfinity Hub
Interface to determine your approximate
installation angle.
3.3 NfinityTM Hub Interface Compatibility
& Orientation
N330 and N360/N380 series
CVPs have different shift driver
configurations, and are compatible
only with the appropriate Nfinity Hub
Interface. Do not attempt to fit incorrect
Nfinity Hub Interfaces, as damage will occur.
C
compatible
compatible
incompatible
incompatible
E
0°
F
0°
20° 
!
Nfinity 330 Hub Interface
Nfinity 380 Hub InterfaceN360/N380 CVP
A
N330 CVP

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3.4 Installing the Nfinity Hub Interface
1. Remove the anti-shift retainer, if installed
(reference section 3.2)
2. Ensure that markings between the splined
nut (A) and the shift driver (B) are aligned.
If not, refer to section 4.2
3. Prior to installation, set the Nfinity Hub
Interface to the full overdrive "H" position
(C).
N330 and N360/N380 series
CVPs have different shift driver
configurations, and are compatible
only with the appropriate Nfinity Hub
Interface. Reference section 3.3
4. Suspend the Nfinity Hub Interface over the
right hand axle, and align the axle flats (D)
with the installation angle determined in
section 3.3
• Alternatively, a no-turn washer (E) can be
installed over the Nfinity Hub Interface to
align the installation angle.
5. When the installation angle is aligned,
ensure the Nfinity Hub Interface is set to
full overdrive "H" and seat the Nfinity Hub
Interface fully onto the shift driver and the
spline nut until it is flush with the spline nut,
as shown.
NFINITY ASSEMBLY OF COMPONENTS
6. Thread the r.h. nut (F), serrations facing
outward, onto the axle and tighten to 10-
15 Nm (7-11 ft-lbs).
7. Install the rear wheel per section 2.5
C
D
E
BA
H
F
F
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3.5 Installing the Shifter
1. Install right brake lever according to the
manufacturer’s instruction.
2. Slide the shifter (A) onto the handlebar.
3. Install the right hand grip (B) onto the
handlebar according to the manufacturer’s
instructions
4. Position the shifter such that the display (C)
is visible to the rider and the cable will be
unobstructed
• Tighten the clamp bolt to 2.0-2.5 Nm (18-
22 in-lbs).
Never use lubricants or solvents to
install handlebar grips.
Make sure that the shifter and the
brake lever function properly and are
unobstructed (re-adjust if necessary).
Never ride without the handlebar
grips. The turning grip of the shifter
could become loose. This can result
in a severe injury.
NFINITY ASSEMBLY OF COMPONENTS
C
A
B
A
B
C
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3.6 Installing Shift Cable Housing
1. Route cable housing as shown from the
shifter to the Nfinity Hub Interface.
2. Measure, cut and install the appropriate
length cable housing (A) for the bicycle.
• Full-length housing is recommended for
both shift cables.
• Make sure that the cable housing lengths
are sufficient to allow an extreme turning
angle. Also consider the influence of
adjustable handlebars and stems on the
cable housing lengths.
3. Secure cable housing to the frame.
• The cable housing must remain moveable
for axle adjustment.
• Avoid tight bends when installing the shift
cable housing.
• Leave at least 150mm of housing
unsupported at the Nfinity Hub Interface to
ease installation and removal of the shift
cable hardware.
4. With the housing length correct, install end
caps (B) at both ends of each housing.
NFINITY ASSEMBLY OF COMPONENTS
B
A

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3.7 Installing Shift Cables and Hardware
Install cable end hardware only by pulling
cables at the end of the housing (A). Never
rotate the grip (B) with cables unattached, as
they can bind inside the shifter.
1. Pass the shift cables through the
appropriate cable housing and ensure
the housing is seated completely into the
shifter.
• Thread both barrel adjusters completely
clockwise (in) to provide maximum
installation slack.
2. Pull the underdrive shift cable (C) firmly
at the rear axle location until it stops,
checking to make sure that the shift
indicator (D) goes completely flat (Nfinity
C8 and Nfinity C8s shifters), or that the
grip rotates fully in the counter-clockwise
direction shown (Nfinity C3 shifter, viewed
from right side of bicycle).
3. Pass the underdrive shift cable through the
UD cable stop (F) and secure the UD cable
stop at the distance shown (E) while pulling
the cable firmly.
• Ensure that the cable housing is seated fully
at the shifter.
• Using a 2mm allen, secure the cable and
torque to 1.5-2.0 Nm (13-18 in-lbs).
NFINITY ASSEMBLY OF COMPONENTS
4. Cut the excess cable at a maximum of
2.0mm from the end of the UD cable stop
(G).
5. Pull the overdrive shift cable (H) firmly
at the Nfinity Hub Interface until it stops,
checking to make sure that the shift
indicator (I) goes into a steep hill (Nfinity
C8 and Nfinity C8s shifters), or that the
grip rotates fully in the clockwise direction
shown (Nfinity C3 shifter, viewed from
right side of bicycle).
• Make sure the underdrive shift cable and
UD cable stop are free and unobstructed
6. Pass the overdrive shift cable through the
OD Latch (K) and secure the OD latch at
the distance shown (J) while pulling the
cable firmly.
• Ensure that the cable housing is seated fully
at the shifter.
• Using a 2mm allen, secure the cable and
torque to 1.5-2.0 Nm (13-18 in-lbs).
7. Cut the excess cable at the OD latch
marking (L), and tuck the remaining cable
length into the OD latch as shown (M).
8. The cable hardware should appear as
shown. Assemble to CVP per section 2.5
and adjust cable slack with the barrel
adjusters per section 2.3.
E
C
B
F
G
A
D
120 mm
H
I
J
LK
M
114 mm

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NFINITY SERVICE INSTRUCTIONS
4. Nfinity service instructions
4.1 Replacing Shifter Cables
Removing Shifter Cables
1. Remove cable hardware from both cables
and remove shift cables from housing.
2. Remove the phillips screw (A) on the
bottom of the Nfinity shifter and remove the
bottom cover (B) by pulling lightly on the
access tab.
3. Using a small flat screwdriver or pointed
object, extract the cable anchors (C) and
shift cables (D) from the grip pulley.
• Rotate the grip to access individual cable
anchors.
For installing shifter cables see page 17.
A
B
C
D

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F
E
G
Installing Shifter Cables
4. Install one shift cable, allowing the shifter
housing (E) to guide the cable around the
internals until it comes out the other side.
Guide the cable through the closest barrel
adjuster (F).
5. Pull the cable through the barrel adjuster
until the cable anchor seats fully into the
grip pulley (G).
6. Rotate the grip to position the next cable
for installation and repeat step 4. and
step 5.
7. Reinstall the bottom cover and screw (A).
Torque to 0.2-0.3 Nm (2-3 in-lbs).
A

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4.2 Resetting CVP to Full Overdrive
1. NuVinci Optimized CVPs are shipped in
full overdrive with an anti-shift retainer
installed (reference section 3.2).
2. If the Nfinity Hub Interface is incorrectly
installed, full ratio range of the CVP may
be unavailable, and full overdrive will
need to be reset.
3. If installed on the bicycle, shift the CVP
into overdrive (H) as far as possible, and
remove the rear wheel per section 2.4.
4. Remove the r.h. nut (A) that secures the
Nfinity Hub Interface (B), then remove the
Nfinity Hub Interface by lifting carefully
from underneath.
5. If the spline nut (C) and shift driver (D)
markings are not aligned, full overdrive
will need to be reset.
• If the markings are not obvious, full
overdrive should result in the hub/wheel
rotating 1.6-2 times for every 1 rotation of
the CVP sprocket
6. Set the Nfinity Hub Interface to the full
underdrive "L" position (note this is
opposite of normal installation). Reinstall
the Nfinity Hub Interface (angular position
is unimportant), leaving the r.h. nut
uninstalled.
NFINITY SERVICE INSTRUCTIONS
• The Nfinity Hub Interface will be used
to shift the CVP into full overdrive in the
following steps.
7. Install the NuVinci Optimized CVP into a
vice or fixture as shown, clamping on the
left hand axle flats.
• If a vice is not available, installation in the
bicycle frame is possible, tightening only
the left hand side no-turn washer and axle
nut to allow rotation of the Nfinity Hub
Interface.
See page 19 for step 8. – 11.
CD
A
B
L
H
"H" full overdrive
"L" full underdrive

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NFINITY SERVICE INSTRUCTIONS
8. While driving the CVP clockwise with
the Sprocket (A), rotate the Nfinity Hub
Interface (B) counter-clockwise toward the
full overdrive "H" position until a firm stop
is felt. Repeat this rotation 2-3 times by
driving the CVP clockwise and rotating
the Nfinity Hub Interface back and forth,
ending at a firm stop toward (but likely not
at) the full overdrive "H" position.
• The indicated position of the Nfinity Hub
Interface is unimportant in this step.
• When in full overdrive, the hub/wheel
should rotate approximately 1.6-2 times
for every 1 rotation of the CVP sprocket.
When full overdrive is found, remove the
Nfinity Hub Interface per step 4. in this
section.
Check to make sure the mark on the Spline
nut and shift driver align per step 5. in this
section.
Install the Nfinity Hub Interface per section
3.3 and section 3.4.
At all times while rotating the wheel,
sprocket, or Nfinity Hub Interface,
be careful not to catch or pinch
fingers.
09.
10.
11.
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A
B

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4.3 Servicing or Replacing Freewheel
Set the NuVinci Optimized CVP in
full overdrive with the front shifter
or Nfinity Hub Interface prior to
removal.
1. Remove the rear wheel per section 2.4.
2. Remove the Nfinity Hub Interface per
section 4.2.
3. Reference the exploded view in section
5.3. Remove the sprocket snap ring (12),
sprocket spacer (13, if installed), and
sprocket (14).
4. Remove the snap ring (15) on the shift
driver, and remove the freewheel assembly
(16).
• If servicing or replacing, use a medium-
weight oil or very lightweight water-
resistant grease and check pawl and
spring function.
5. Remove the Interior snap ring (17), needle
bearing (18), and r.h. shield (19) if these
components are being replaced.
6. Install the serviced / new freewheel
components according to the exploded
view in section 5.3.
NFINITY SERVICE INSTRUCTIONS
7. Install the sprocket and Nfinity Hub
Interface per section 3.2, section 3.3, and
section 3.4.
8. Install the rear wheel per section 2.5.
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