Ruff Cycles Lil'MISSY Installation instructions
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ORIGINAL OPERATING MANUAL
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Manufacturer:
RUFF CYCLES GmbH
Im Gewerbepark B69
93059 Regensburg
Germany
info@ru-cycles.com
.ru-cycles.com
V2.0 February 2023
Layout, photographs and text: RUFF CYCLES GmbH, Regensburg, Germany
Text passages are provided with courtesy of HNF GmbH
The mentioned brand names are subject to copyrights and are the property of their legitimate owners
even without special indication. Any reprint or copy, even only in extracts, is only permied with our
expressed wrien consent. This manual is subject to misprints, errors and technical alterations. Please
note that the illustrated product may be dierent from the delivery condition of the product.
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CONTENTS
1.
Your Vehicle 7
1.1. Intended Use 7
1.2. Vechile Overview 9
1.3. Delivery Scope 10
1.4. Assembly of Accessories 10
2. Commissioning 10
2.1. Handlebar Alignment 10
2.2. Pedal Assembly 11
2.3. Removal/Installation of the Baery 12
2.4. Switching ON/OFF the Drive 12
2.5. Adjusting Support Level 12
2.6. Switching ON/OFF the Lamp 13
2.7. Initial Engagement of Brake Discs 13
3. Before Each Ride 14
3.1. Checking the Tires 14
3.2. Checking the Brake System 14
3.3. Checking the Chain 15
3.4. Baery: Checking the Fixation and Charging Status 15
3.5. Checking the Fork 15
3.6. Checking the Screw Connections 16
3.7. Checking the Lights 16
4. Operating the Bike 17
4.1. Gear Derailleur 17
4.2. Drive Unit 17
4.2.1. Chain Drive Unit 17
4.3. Brake System 18
4.4. Side Stand 18
5. Ergonomic Seing 19
5.1. Brake Lever 19
5.1.1. Adjusting Brake Lever Position 19
5.1.2. Brake Grip Angle 19
5.1.3. Adjusting Brake Lever Distance 20
6. Maintenance 20
6.1. Wear Parts List 21
6.2. Recommended Maintenance Intervals 21
6.3. Aer an Accident 22
6.4. Baery 22
6.5. Tires 23
6.6. Changing Tires/Tubes 23
6.6.1. Dismounting the Front Wheel 23
6.6.2. Dismounting the Rear Wheel 24
6.6.3. Changing Tires/Tubes 25
6.6.4. Installing the Front Wheel 26
6.6.5. Installing the Rear Wheel 26
6.7. Chain Gear Seings 27
6.8. Brakes 27
6.8.1. Wear of Brake Pads and Discs 27
6.8.2. Checking the Brake Pads 28
6.9. Seing the Headlight Range 28
7. Cleaning and Maintenance 29
8. Transport on/by Car 29
9. Technical Data 31
9.1. Component List 31
9.2. Weights 32
9.3. Torque of Screws 32
10. Liability for Material Defects 33
11. EC Declaration of Conformity 34
12. Disposal 35
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YOUR VEHICLE
Content and Symbols in this User Manual
This User Manual contains important information for enhancing safety and pro-
longing service life of the Pedelec as well as lasting fun with your Lil‘Missy.
Any neglect of the contents of this User Manual may lead to damages to the
vehicle as well as injuries.
The following symbols are used in the User Manual:
Important Information!
Warning!
This symbol indicates a possible danger.
Please observe the safety instructions!
Information
Here, you will find useful information on the maintenance of the product
The User Manual of your Lil’Missy is constantly checked and updated. This instruction
corresponds to our level of knowledge at the time of publication. We recommend you to
visit our website .ru-cycles.com/manuals for any modifications. Here you can also
download the updated manual in PDF format.
1. YOUR VEHICLE
We congratulate you on the purchase of a Pedelec with BOSCH driving techno-
logy. You have decided for a state-of-the-art means of transport, which allows
you brand-new mobility options. We put greatest importance on the technical
quality of the single components of your Pedelec1, ensuring that you will enjoy
your bike for many years.
The Pedelec is a bicycle with electrical power assistance for the driver. This aid
is adjusted via a controller that evaluates the data through three sensors (speed,
step rate and torque), regulating the engine according to the selected support
level. When reaching a speed of 15.53 mph (25 km/h), the electrical engine
switches o. But driving at a speed over 15.53 mph (25 km/h) by oneself is also
possible.
The Pedelec is lawfully equivalent to the bicycle. No permit or license plate are
required. The driver does not need a driver license. We do recommend that you
wear an appropriate helmet and goggles for your own safety.
1 Pedal Electric Cycle
1.1. INTENDED USE
Your Pedelec is intended for the transport of one person on asphalt roads and
rideable forest and land routes. The admissible total weight (bike + driver + ac-
cessory + baggage) amounts to 150 kg.
The Pedelec is not intended for:
• Racing/competition
• Cleaning with a water jet
• Transport in the rain by a car without covering the engine and
dismantling the baery and display
• Charging the Pedelec outdoors in a wet environment
In the following text, your Lil‘Missy is called “Pedelec“
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YOUR VEHICLEYOUR VEHICLE
Check if required active and passive illumination devices have been installed ac-
cording to the safety regulations applicable in your country. Required illumination
devices can be purchased on our ocal website. The technical design safety
must be checked regularly and eventually be repaired by a specialist.
Intended use is also limited by:
• The safety instructions in this User Manual
• The “Technical Data“ chapter in this User Manual
• Your local regulations for street transport
The following user groups should not use the Pedelec:
• Persons with a limited physical, sensory or mental capacity
• Persons who due to their body size, cannot safely ride the bicycle
Any changes to your Pedelec increasing the engine output or maximum support
speed, can endanger your driving safety and convert the vehicle from a Pedelec into
a small motorcycle. You could be exposed to sanctions in accordance with trac,
licence and safety regulation with penal consequences!
A Pedelec accelerates faster than a bicycle. Be aware that other trac participants
cannot always predict your acceleration performance.
→ First, get acquainted to your new Pedelec on a trac free location, before riding in
the busy streets.
→ Exercise the brakes. Please also see chapter 4.3. “Brake System“.
Rotating parts such as wheels, chain ring, sprocket, pedal crank or pedals may draw
in clothing, carried objects and even body parts, e.g. your shawl or a bag aached
to the handlebar may get caught into the spokes during driving. When your feet slip
from the pedals, they can get caught in the spokes. This may lead to severe acci-
dents!
→ Always wear tight-fiing clothes.
→ Wear shoes with non-slip, flat soles.
→ Do not aach objects onto the handlebar, as they may swing into the front wheel.
1.2. VEHICLE OVERVIEW
1. Hydraulic Disc Brakes
2. 7-Gear Shiig System
3. Chain Tensioner
4. Side Stand
5. Chain
6. Engine
7. Baery
8. Fork
9. Type Plate
10. Control Unit
The frame number is found on the engine
mount. The type plate is located on the
downtube.
Please note down the serial number of the Pedelec here:
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COMMISSIONINGYOUR VEHICLE
• Charging device
• 2 keys for securing the baery to the Pedelec
• 2 transport fixations for the hydraulic disc brakes
• Keychain
• Bicycle bell
• Reflectors set
• Delivery package (please store if you consider to cancel the purchase within
two weeks)
• User manuals of dierent component manufacturers
1.3. DELIVERY SCOPE
1.4. ASSEMBLY OF ACCESSORIES
2.1. HANDLEBAR ALIGNMENT
When installing accessories like a child seat or trailer, please check the compati-
bility with the Pedelec through the accessory manufacturer or a bicycle dealer.
• Li the vehicle by the front frame, so that it no longer touches the ground.
Turn the fork lewards and rightwards. The front wheel must follow the
movement. This simulated steering operation should not be dicult
• If the steering is not rotated easily, the ahead bolt is tightened too fast (1).
This chapter explains how to prepare your Pedelec for the ride.
Inflate the tires first. The air pressure volume is described in chapter 3.1.
2. COMMISSIONING
Your Pedelec is supplied as a part assembly and as a full assembly. In the laer case, you
can skip items 2.1. and 2.2.
If it is not a standard delivery, please read the following items for “Handlebar Alignment“
and “Pedal Assembly“.
The stem is a significant safety component. When tightening the bolts, ensure that
you use the torque as defined in the torque table under 9.3. Otherwise, there is a
hazard of accident!
Loosen it by releasing the 2 screws (2) of the stem. Now you can adjust the
compression of the steering bearing with the ahead bolt. Re-tighten the
stem screw with a torque of 67 Nm
• Finally, clamp the handlebar in the middle by tightening the bolts (3) at the
cross on the stem. Ensure a uniform front
and rear gap between stem and cover
• Apply a thin layer of grease onto the thread of the pedal axis and the crank.
Next, screw the pedal into place by hand loosely. Consider the correct as-
sembly angles in order to avoid tilting
• Place the crank in a horizontal position, the
right pedal oriented towards the front wheel
• Tighten the pedal with an SW 15 open end
wrench at 3035 Nm
2.2. PEDAL ASSEMBLY
The right pedal has a right thread, the le pedal has a le thread on the pedal axis. The
right pedal is mounted clockwise and the le pedal is mounted counter-clockwise. The
pedals are marked with “R” and “L”.
Pedals are important safety components. Make sure that you tighten the pedal axis
firmly, according to the manual. Otherwise, there is a hazard of accident!
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Removing the baery:
• Before removing the baery, ensure that
the system is disconnected. Turn the key
in the lock by 90° rotation while pulling the
baery from the upper bracket
• Pull the baery from the bracket
COMMISSIONINGCOMMISSIONING
2.3. REMOVAL/INSTALLATION OF THE BATTERY
2.4. SWITCHING ON/OFF THE DRIVE
2.5. ADJUSTING SUPPORT LEVEL
The Pedelec system can be switched on/o
in the following ways:
• Press the on/o buon of your board
computer when the baery is installed
• Press the on/o buon of the Pedelec
baery (see baery manual)
For the adjustment of the support level, press the “+“ buon on the control unit
until the required support level is shown on the display. To lower it, press the “–“
buon.
Inserting the baery:
• Insert the baery with its contacts on the
lower bracket and, while sliding it in, tilt it
up to the upper bracket, until the lock snaps
in audibly
2.6. SWITCHING ON/OFF THE LAMP
2.7. INITIAL ENGAGMENT OF BRAKE DISCS
• Make sure that the engine is on
• By pressing the buon “+“ for a few seconds,
front and back light will turn on
• To turn the lights o, press the “+“ buon for
a long time
Your brake system is delivered with a weak break function, because the surfaces
of the brake discs and pads have not been engaged yet. With a new Pedelec,
and also when changing the brake discs and pads, you should engage the brake
discs as follows:
• Accelerate the Pedelec to approx. 15.53 mph (25 km/h)
• Brake the Pedelec by both brakes until standstill
(avoid blocking the wheels!)
• Repeat this procedure as oen as required in order to achieve an optimal
brake performance
If you put too much force on the front wheel brake, a hazard of tipping over exists.
Your rear wheel might li and have you fall over the handlebar.
→ Pull a lile less on the le brake lever, or fully release the brake lever, when you
notice that the rear wheel is liing.
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BEFORE EACH RIDEBEFORE EACH RIDE
3. BEFORE EACH RIDE
3.1. CHECKING THE TIRES
3.2. CHECKING THE BRAKE SYSTEM
• Before each ride, check your brakes at standstill. For this purpose, pull the
brake lever towards the handlebar with two fingers for a normal braking
force. The brake lever must not touch the handlebar grip
• Move the Pedelec while pulling the front and rear brakes. A play too strong
is not allowed. If you notice any play, identify the cause. The brake calliper
or brake disc may not be tightened firmly. Tighten according to the torques
in the torque table in chapter 9.3.
• If hydraulic brake discs are used, the pressure point must be stable at the
brake lever. If the pressure point is not reached aer two thirds travel of
the lever, pull the lever several times in a row (“pumping”). Check whether
the pressure point has stiened. If so, or when the pressure point changes
during the ride, have the brake system bled by a specialist workplace
• The brake discs must be oil-free. Any oil on the brake discs can be removed
• Are there any foreign objects (twigs) between the chain links?
→ If so: Remove them
• Is the chain very dirty?
→ If so: Rinse it with water or a proper cleaning solution. Then use a first
class chain lubricant
• Lubricate the chain at regular intervals, even when it is not dirty, in order to
prevent it from significant wear
• Breakage and deformations
• Secure fixation of the protective plate
• Firm screwing connection of the fork bridge
The chain is a product subject to wear. Please check the following items regular-
ly:
Check whether the baery is secured in the lock and see whether the charging
status is sucient for your planned ride.
Before each ride, check the fork for:
Tire pressure: The allowed pressure range of the Tyron 20“ 98406 is between 1
and 1.5 bar.
The following applies: The higher your weight, the higher the air pressure to be
used. If you are not a light-weight person, set the pressure of your rear tire to 1.5
bar.
We recommend to check the pressure every 2 to 4 weeks, since there is an inevitable
constant pressure loss of the inner tubes.
With a tire pressure too low, a puncturing hazard exists (snakebites). This will result
in a flat tire.
A tire that is damaged by tears or punctured by a sharp object may loose its pres-
sure. A hazard of accident exists!
→ Check that your tires are without tears or any foreign objects.
with alcohol. Do not use a conventional brake disc cleaning solution!
The pressure point is the lever position of the travel at which the brake is engaged. If bra-
kes function smoothly — there are no air bubbles in the hydraulic line — the pressure point
is situated at the same lever position at each braking action.
Do not touch the brake discs with your hands. The thin grease film on your skin is transmit-
ted to the brake discs and aects their functions.
3.3. CHECKING THE CHAIN
3.4. BATTERY: CHECKING THE FIXTATION AND CHAR-
GING STATUS
3.5. CHECKING THE FORK
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OPERATING THE BIKEBEFORE EACH RIDE
3.6. CHECKING THE SCREW CONNECTIONS
3.7. CHECKING THE LIGHTS
Before each ride, check the firmness of screw connections for
Before each ride, check the function of the lights. Ensure that the headlamp is
directed according to the lighting range defined by your local regulations. See
chapter 6.9.
Also check that the following parts do not rotate:
Li the vehicle up slightly and let it fall to the ground on its tires. Check whether
you see or hear any loose parts. Identify the cause of any loose parts and check if
their torque is correct. If required, consult a specialist dealer.
• Quick release of the front wheel
• Thru axle of the rear wheel
• Seatbench
• Handlebar
• Stem
4. OPERATING THE BIKE
4.1. CHAIN GEAR DERAILLEUR
4.2. DRIVE UNIT
With the shiing system, you can adjust the gear ratio using a shier lever.
4.2.1. CHAIN DRIVE UNIT
At delivery, the chain is optimally tensioned and must not be re-tensioned, neit-
her aer the prolonged use of the drive. The chain is continuously submied to
tensile load by muscle and engine power. This will extend it over time. Optimal
chain tension is maintained by the chain tensioner which also prevents the chain
from sagging. However, check the chain at a specialist worksite at regular inter-
vals, since a worn-out chain will damage the chain ring and sprocket.
Changing gears during the ride
• The front shi lever (A) has two levels
• Release the gearshi lever aer shiing so
that the gearshi lever can automatically
return to the starting position
• To go one gear lower on the sprocket, press
the front shi lever (A) on the right side of
the handlebar until it snaps into place for the
first time
• To lower down two gears on the sprocket, press the front shi lever (A) on
the right side of the handlebar until it engages a second time
• To shi up a gear on the sprocket, press the rear shi lever (B) on the right
side of the handlebar
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ERGONOMIC SETTINGOPERATING THE BIKE
4.3. BRAKE SYSTEM
4.4. SIDE STAND
Your Pedelec is equipped with hydraulic brake discs for a fast and safe stopping
action. Use both brakes simultaneously for an optimal and safe braking. The le
brake lever has an eect on the front wheel brake, the right brake lever has an
eect on the rear wheel brake.
The brake system is provided with a fully automated lining compensation. This
osets the wear of the brake pads, while the brake pressure point remains equal.
When manipulating your side stand, be cautious of the following:
The front wheel brake has a stronger delay eect than the rear wheel brake. Exercise the
purposeful use of the front wheel brake, so that you become familiar with its force.
If you put too much force on the front wheel brake, a hazard of tipping over exists.
Your rear wheel might li and have you fall over the handlebar.
→ Pull a lile less at the le brake lever, or fully release the brake lever, when you
notice that the rear wheel is liing.
Riding with unfolded side stand may lead to falling. Moving the Pedelec backwards
with an unfolded side stand may lead to the clamping of the stand onto the crank.
→ Fold in the stand before starting the ride.
If you sit on the Pedelec while the side stand is folded out, it may fail.
→ Do not sit on the vehicle if the side stand is folded out.
Aer braking, especially aer long rides down the hill, the brake discs, brake calliper,
quick release and axis nuts can become very hot.
→ Do not touch the brake discs aer intense braking action. You could burn yourself.
5. ERGONOMIC SETTING
5.1. BRAKE LEVER
You can adjust the brake lever position on the handlebar, along with the brake
lever angle and lever width.
5.1.1. ADJUSTING BRAKE LEVER POSITION
For a firm grip on the handlebars when braking,
it is best to take the brake lever by your index
and middle finger. To achieve this position,
moving the lever sidewards, so that both fingers
can grip the brake lever as shown in the picture,
might be necessary.
You can move the brake grip on the handlebar
by loosening the hexagon socket screw on the
handlebar clip. If required, first use an appropriate Allen wrench for the loosening
and shiing of the engine operating unit or gear unit.
Once you have found the correct position, tighten the grips just as much as to
allow their rotation.
In the next step, adjust the brake grip angle.
5.1.2. BRAKE GRIP ANGLE
Adjust the brake grip angle so that with exten-
ded arms, your fingers rest on the brake levers
when seated on the Pedelec. Your wrist should
be stretched out as much as possible.
Aer adjusting the angle, re-tighten the lever
clamping bolt on the brake lever.
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MAINTENANCEERGONOMIC SETTING
5.1.3. ADJUSTING BRAKE LEVER DISTANCE
The brake lever distance seing should al-
low you to operate the brake lever by the first
phalanxes of both fingers positioned on the
lever. The lever width is adjusted with an Allen
wrench (size depends on producer). For this
purpose, adjust the screw at the marked posi-
tion 1.
6. MAINTENANCE
For a fully operational and secure Pedelec, regular maintenance must be perfor-
med. Before maintenance, please observe the following instructions.
Maintenance requires technical skills. You are responsible for the correct mainte-
nance of your Pedelec.
→ If you do not know how to perform this task, take your bike to a specialist for main-
tenance.
During maintenance works a trapping and crushing risk exists. Your fingers can get
caught by moving parts.
→ Be careful with your hands when you work.
A hazard of injury exists when the drive system
is switched on during maintenance works! You
hands may get caught between the chain and
chain ring during running operation.
→ Remove the baery before performing mainte-
nance work. This ensures that the drive system is
out of function.
6.1. WEAR PARTS LIST
6.2. RECOMMENDED MAINTENANCE INTERVALS
The following parts of your Pedelec are subject to wear according to their use.
This wear is not covered by the warranty.
Maintenance of your Pedelec is required according to its use and it cannot be
precisely indicated. Take your bike to a specialist dealer for inspection and main-
tenance at least once a year.
In principle, we propose the following maintenance intervals:
Once aer first 62186 miles (100300 km)
• Check tightening torques of brake levers
• Check tightening torques of stem, handlebar
• Check spoke tension, re-center if required
• Readjust shi cables if required
Details on wear of some parts are found in the following chapters. Most parts
suer wear due to friction.
• Baery
• Tires and tubes
• Brake pads, brake discs
• Chain, chain ring and sprocket
• Rubber gaskets and rings
• All moving parts (e.g. bearing/pedals)
• Shi cables, shi cable housing
• Lubricant
• Handlebar grips
• Painting and all surfaces
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Every 310 miles (500 km)
• Check bearing clearance of steering
• Check bearing clearance of hubs
• Check bearing clearance of pedals
• Check tight-fiing crank seat
• Check wheel concentricity and spoke tension
• Check headlamp inclination
• Check brake pad wear condition (first time aer 621 miles or 1,000 km)
Every 1242 miles (2.000 km) (or once a year)
• Check brake disc wear condition
• Check tightening torques of brake levers, saddle, saddle support, stem,
handlebar
• Check chain wear condition and exchange it, if required
• Chain ring and sprocket wear condition
MAINTENANCEMAINTENANCE
6.3. AFTER AN ACCIDENT
If due to an accident, parts of the drive system are visibly damaged (cable, engine,
baery), a hazard of electric shock exists.
→ Immediately remove the baery in such a case. Have the drive system checked by
a qualified dealer.
Any damages caused to the carrying parts of your Pedelec due to an accident may
lead to a breakage hazard.
→ Aer an accident, contact your specialist dealer to check all damaged parts
such as frame, fork, handlebar, stem, saddle support, pedal crank and pedals, and
exchange any parts if required.
6.4. BATTERY
The baery has a guaranteed service life of two years (warranty term) and 500
charging cycles, with a remaining capacity of 60% aer this period. A charging
cycle means a complete charge of the baery with one single charge or several
partial charges (e.g. two half charges).
A baery is a wear part, as it ages over time or its wear rate accelerates by its
use. The baery life depends on the following factors:
Inevitably, tires are subject to wear due to friction. Wear of the side edges of the
tire can be reduced by using a sucient amount of air pressure (see chapter 3.1)
and by giving up blocking the wheels during braking.
You should change your tires when the rubber wheel tread is used up so much
that the mesh below becomes visible, or when the tires have become porous due
to ageing and frequent sun radiation. The following chapters describe the proce-
dure for changing the tires.
Stress
Baery life is reduced by a high demand on the engine output (strong stepping
up, high supporting levels).
Environmental temperature at storage
Baery life is reduced when the bike is stored at temperatures exceeding 30 °C
or in the direct sunlight. Storage at temperatures between 0 and 20 °C increases
the baery life.
Charging status during storage
The highest baery life is achieved when the baery is stored with a charging
status of approx. 60%. But storage of the baery with a full or empty status will
reduce the baery life.
If you do not use your Pedelec for a prolonged period (> 1 month), make sure that
the baery is charged by approx. 60%, which corresponds to 3 LEDs on the
display. Check the charging status aer 3 months. If only one LED is lit on the
charging status display, re-charge the baery up to approx. 60%.
6.5. TIRES
6.6. CHANGING TIRES/TUBES
The wheels are easily dismounted by hanging the Pedelec in a maintenance support or
placing it upside down on the saddle and handlebar.
Before positioning the bike on the saddle and handlebar, remove the display and rotate the
bell and remote control.
6.6.1. DISMOUNTING THE FRONT WHEEL
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MAINTENANCEMAINTENANCE
• Open the quick release by turning over the
handle
• Loosen the nut a few turns at the other end
of the quick release. The front wheel now
slides out from the dropout of the fork
• Insert the transportation lock between the
brake pads
• Change into the lowest gear
• Loosen and remove the axle as
shown in figure 1, 2 and 3
• Pull the rear derailleur back and re-
move the wheel as shown in figure
4 and 5
• You can now remove the chain and
take out the rear wheel by moving
and turning it backwards
When the wheel is dismounted, do not activate the hydraulic brake discs. Otherwise,
the calliper pistons may approach each other and touch.
→ Once you have dismounted the wheel, slide some colored transportation locks
between the brake pads.
6.6.2. DISMOUNTING THE REAR WHEEL • Unscrew the valve cap from the valve
• Release the air completely by pressing
the valve pin halfway into the valve
• Remove the tire at one side of the wheel
rim with the aid of a tire lever. If required,
use a rinsing agent and water for an easy
liing of the tire
• Pull o the tire and tube and perform the
required changes
• Inflate the inner tube only moderately (diameter approx. 0.78 in or 2 cm) and
relocate it in the tire
• Insert the valve into the valve opening of the rim and pull both tire and tube
onto the rim from one side
• Observe the rotation direction as indicated by the manufacturer, if available
• Next, li the other side of the tire onto the rim with the tire lever
• Inflate the tire to maximum pressure as indicated on the rim, in order to ins-
tall the tire evenly on the rim. It is normal when you hear a “plop” sound
• Reduce the pressure according to the required value (see chapter 3.1.)
• Screw the valve cap onto the valve
6.6.3. CHANGING TIRES/TUBES
26 27
• In the first picture you can see the chain tail which has an upper (A) and
lower (B) stop
• Use the upper stop (A) to set the sprocket which must be aligned in parallel
• With the lower stop (B) you set the upper
limit so that the chain does not jump over.
This should also run parallel to the upper
sprocket
• The third screw on the chain tail serves to
wrap the chain on the sprocket
• Fine adjustments can be made using the
knurled nut of the bowden cable
• This should be used if there are any raling
noises when the train is elongating
MAINTENANCEMAINTENANCE
• Remove the transportation lock between the brake pads
• Thread the front wheel into the fork carefully. Make sure that the brake disc
skids into the brake pads
• Insert the quick release axle into the fork and hub, then tighten the nut some
turns, while you hold the quick release handle
• Flip up the quick release lever, in parallel position to the fork leg. The clamp-
ing force should increase during the locking. If this is not the case, re-open
the quick release and re-tighten the nut
• Remove the transportation lock between the brake pads
• Mount the rear wheel into the rear dropout on the frame and li the chain
onto the sprocket again
• Make sure not to clamp the cables
• Pull the rear wheel backwards against the drive direction, insert the thru
axle into the dropouts and tighten with a torque of 12 Nm
• For a chain drive: reposition the chain on the chain tensioner making sure
that the sprocket flanges are positioned in between the chain links
6.6.4. INSTALLING THE FRONT WHEEL
6.6.5. INSTALLING THE REAR WHEEL
With too low initial tension of the quick release, the wheel can come o during the
ride. A hazard of accident exists!
→ Always tighten the quick release with 1012 Nm.
Check the alignment of the markings as described in chapter 6.7.
6.7. CHAIN DERAILLEUR SETTINGS
6.8. BRAKES
Since this is a hydraulic brake system, maintenance options are limited. Consult
a specialist workplace for repair works on the hydraulics. Always contact the
specialist when the brake pressure point oscillates.
Brake pads and brake discs are subject to wear, which is caused by the friction
between parts. Wear depends on driving style, terrain, weather and surface con-
ditions, therefore wear of the brake pads cannot be predicted.
Since brake discs are made of a material with a higher resistance, they must
be exchanged only aer exchanging approx. 4 to 5 brake pad pairs. A regular
inspection of the brake pads every 310.6 miles (500 km) is recommended.
6.8.1. WEAR OF BRAKE PADS AND DISCS
28 29
6.9. SETTING THE HEADLIGHT RANGE
Seing the headlight range is prerequisite for your own and all surrounding traf-
fic participants’ security.
We recommend to set the headlamp in such
a way that, measured at 16.4 (5 m) from the
lamp, the center of the light cone should be at
half the height of the light source.
Brake pads must be changed when they
First check the brake pad width visually. If you suspect that the minimum width
is exceeded, the pads must be dismounted and inspected with a calliper. Please
consult a specialist workplace for this inspection.
• Have a width of only 0.098 inches (2.5
mm) (height of friction lining incl. carrier
plate)
• Are in contact with oil (leads to a lower
braking performance)
6.8.2. CHECKING THE BRAKE PADS
The inclination of the headlamp is set by relea-
sing the screw connection on the lamp holder
with an appropriate open-end wrench and
repositioning it according to a new inclination.
Then tighten the nut only to such extent you can
still manually correct the lamp’s inclination with
a greater force.
CLEANING AND MAINTENANCEMAINTENANCE
7. CLEANING AND MAINTENANCE
• If required, clean the Pedelec with water (but not a water jet!) using a so
cloth or so brush
• You can also clean the chain with water or a non-abrasive cleaning agent.
Then, lubricate it
• With a humid cloth, wipe o the contacts on the baery and the bae-
ry holder on the frame. Wait until the contacts are dry before refixing the
baery
• To prevent corrosion, treat the screws on the Pedelec with a corrosion pro-
tective film, e.g. with a spray wax
A water jet, e.g. from a garden hose may lead to damages on the bearings, gear hub,
baery, engine and display.
The manufacturer does not accept any liability for damages.
Spray wax or oil leaking onto the brake discs or brake pads will decrease the braking
function.
→ Make sure that spray wax or oil does not leak onto brake discs or brake pads!
8. TRANSPORT ON/BY CAR
To avoid damages to the Pedelec during transport outdoors or on a car, pay at-
tention to the following notes:
During the transport of the Pedelec, the baery can become loose and pose a risk for
other trac due to the amount of contained energy.
→ Dismantle the baery as well as any loose accessories from your Pedelec, before
you transport it on a rear carrier or roof rack.
If you transport the Pedelec during rain or at high speeds by or on the car, water may
penetrate into the hub, the engine, the baery as well as into the display.
→ Remove the baery.
→ Use a protective cover for the Pedelec, hub and engine.
30 31
The weight of the Pedelec places high demands on a car rear carrier or roof rack.
Inappropriate bicycle carriers may break during the ride or they may not fasten your
Pedelec tightly!
→ Check the allowed roof load in the car manual and the support load as indicated in
the manual for car bicycle carriers.
Li-ion baeries are subject to the requirements of the hazardous materials
legislation. Private users may transport the baery in the streets without any
limitations.
For commercial transport or transport by third parties (e.g. forwarding agent),
national regulations on packaging and identification must be met. If required,
consult your specialist in hazardous materials for the correct preparation of the
package.
TECHNICAL DATATRANSPORT ON/BY CAR
9. TECHNICAL DATA
9.1. COMPONENT LIST
Chassis
Frame Lil’Missy Unisex
Fork Double Down Crown Fork
Drive
System
Engine Bosch Active Line (optional: Performance Line CX)
Baery Bosch Baery 300 Wh (optional: 500 Wh)
Display Bosch Purion
Drive and
Brakes
Gears 7 Gear Shiing System
Cranks 155 mm
Sprocket Chainring 38T with Chain Guard
Chain TAYA TB-50 1/2 x 3/32
Rear Sprocket CS-HG 2007
Front Brakes Hydraulic disc brakes, 180 mm
Rear Brakes Hydraulic disc brakes, 180 mm
Wheels
Rear Hub Ru Cycles Hub Rear Thru Axle
Rims Ru Cycles Rim 20“ x 100 mm
Spokes Bued (2 - 2,34 mm) Black
Tires 20“ 98406 ETRTO
Human
Interface
Stem Lil’Missy/Lil’Buddy/BIGGIE 22,2 mm
Handle Bar Ru Cycles BMX Bar
Safety
Head Light Supernova V521S
Rear Light Supernova E3
32 33
Baery Weight 300 Wh 2,5 kg
Baery Weight 500 Wh 2,7 kg
Tare Weight incl. Baery 25 kg
Admissible Total Weight (Bike + Driver + Equipment + Packing Bag) 150 kg
Part Moment/Nm
Bosch Display Mount 1
Fork Crown Screws 12
Stem on Fork Crown 2025
Top Cap 56
Ahead Cap Screw 37
Seatbench 7
TECHNICAL DATA
9.2. WEIGHTS
9.3. TORQUE OF SCREWS
Brake Adapter on Fork or Frame 6
Brake Caliper on Fork or Frame 6
Brake Discs (6-Bolt) 57
Brake Grip (Clamping on Handlebar) max. 4
Lockring Chain Ring 2025
Crank on Bosch-Axle 35
Axle on Rear Wheel Hub 12
Pedals 3035
TECHNICAL DATA
10. LIABILITY FOR MATERIAL DEFECTS
A statutory liability for material defects is applicable for a period of 24 months as
from the day of purchase.
The prerequisite for the assertion of material defects liability shall be the submis-
sion of the original invoice and proven inspections.
The assertion of material defects is subject to the following prerequisites:
The warranty shall not include:
• The presence of a manufacturing, material or information fault
• The claimed damage was already existent at the time of the transfer
• The product was not altered due to wear or ageing
• The damages were not originated by any use other than the intended use.
• Baery: The baery has a remaining nominal capacity of less than 60%
aer a maximum of 500 charge cycles
• Any wear parts as stated in the wear parts list, provided they are not pro-
duction or material defects
• Damages caused by the non-intended use
• Damages caused by the non-compliance of the procedures described in
the “Maintenance” chapter
• Damages caused by the neglecul use of repair tools and lacking mainte-
nance
• Damages caused by the use of used parts
• Damages caused by the additional mounting of standard features or due to
technical retrofiing
34 35
11. EC DECLARATION OF CONFORMITY
EC DECLARATION OF CONFORMITY DISPOSAL
12. DISPOSAL
This symbol on your Pedelec indicates that this product
must not be discarded with household waste, under the
terms of the national laws.
Disposal of the Pedelec at the end of its service life should only be done through
a public collection point. Packaging materials shall be collected separately and
directly disposed of according to local collection schemes. Take the used baery
to an E-bike dealer or send it in for disposal in the hazardous waste packaging at
RUFF CYCLES GmbH.
RUFF CYCLES GmbH
- Disposal -
Im Gewerbepark B69
93059 Regensburg
Germany
36
RUFF CYCLES GmbH
Im Gewerbepark B69
93059 Regensburg
Germany
info@ru-cycles.com
www.ru-cycles.com
251412207-BG-EN-V1
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