Wisper 905se City User manual

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Owner’s Manual
Operation and Maintenance Instructions
Wisper 905se City
January 2009 1
st
edition
We strongly recommend that you read this entire manual efore
using your Wisper ike
Wisper Limited

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905se City User Guide
Introduction Page 3
Part 1 Caring for your Wisper bike and pre use checks
1 Before you set off for the first time Page 4
2 Before each use Page 5
3 Battery care Page 5
4 Recharging your attery Page 6
5 Water Page 6
6 Maintenance and adjustments Page 6
7 Technical specifications and performance Page 8
8 Simple trou le shooting Page 9
Part 2 Controls and quipment
9 Battery on off and attery lock Page 9
10 The red utton Page 10
11 The green utton Page 10
12 Pedelec mode and High Low utton Page 11
13 Throttle Page 11
14 Brakes Page 12
15 Steering stem and handle ar clamp Page 13
16 The front connection ox Page 13
17 Quick release saddle height adjustment Page 14
18 Saddle post suspension Page 14
19 Rims and spokes Page 14
20 Chain and drive wheel Page 14
21 Derailleur Page 14
Warranty Page 17
Getting the best possible range from your Wisper bike Page 18

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Introduction
Thank you for choosing a Wisper electric icycle. By making the decision to use an
electric ike you are helping to safeguard our environment y saving our planet’s
precious resources and reducing car on pollution.
Before you use your Wisper ike it is important that you read this manual carefully. If
there is anything you do not understand completely please contact us or your retailer.
Please o serve traffic regulations, and don’t lend your icycle to anyone who is
unfamiliar with it. The icycle can only legally e used on the road y a person aged 14
years or older.
We strongly advise you to always wear a cycle helmet when using your icycle and if
you are unfamiliar with cycling to attend a cycle proficiency course prior to using it. Your
Wisper Works 905Se City is not a toy and should e considered a serious mode of
transport.
As with all icycles it is important that you stay within safe limits, if you feel as if you are
traveling too quickly for the road conditions you pro a ly are so slow down.
Test your brakes prior to using the bike every time you use it and remember the bike
will not stop as quickly in wet or icy conditions as it would on a dry road.
Frequently check your tyre pressures. They should e 60 psi or 4.1 ar. Low tyre
pressures will result in damage to the tyres and will massively reduce your range.
Before you use the ike for the first time you must make a solutely certain that it has
een correctly uilt. You can do this y either taking it to your nearest cycle engineer or
if you are proficient in cycle mechanics inspecting it yourself. In particular you must
make sure that the pedals, saddle, handle ars and any self assem ly items have een
correctly fitted.
N V R drink alcohol and ride your electric bike. The use of alcohol greatly reduces
reflexes and limits your a ility to ride safely. Even a very small amount of alcohol will
limit your a ility to e safe on the road.
When you need to replace your attery please either dispose of it properly or prefera ly
send it ack to us or your retailer and we will make sure it is properly recycled.
Happy cycling!
Wisper Ltd

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Part 1 Caring for your Wisper bike and checks
Although your Wisper ike has een thoroughly tested prior to delivery, it is very
important that you check the ike thoroughly efore its first use. Equally important are
frequent and regular spot checks they will protect you and your Wisper ike.
Please read this manual carefully. Only on full understanding of all the functions of this
electric bicycle should you attempt to use it.
Your Wisper ike has een transported in a strong twin walled carton, to save space it
has een delivered with the front wheel, handle ars, seat post and seat, rear rack* and
pedals ready for assem ly with the tool kit provided**.
* Rack not supplied on all models
** Your retailer may have assem led your ike for you if not you will find fitting
instructions on the Wisper we site www.wisper ikes.com
1 Before you set off for the first time
1.1 Check the handle ars and handle ar stem are properly tightened.
1.2 Check all other nuts and olts and fixings are properly tightened, pay particular
attention to the motor fixings, side kick stand, yoke and steering head earings.
1.3 Check rakes and rake isolators are functioning properly.
1.4 Check tyre pressures are 60psi / 4.1 ar and tyres are not damaged.
1.5 Check reflectors and lights are functioning properly.
1.6 Make sure attery is fully charged.
1.7 Load attery into icycle and turn on with key.
1.8 Check the power indicator lamps are illuminated on the right hand side of the
handle ars if they do not illuminate press the red on / off switch once.

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1.9 To avoid dangerous unplanned acceleration, always make sure that the
electrical system is turned off and the power indicator lamps are not
illuminated when mounting, dismounting or leaving the ike unattended. For
your safety, please turn off the power key on the attery when stopped or
walking the ike.
1.10 Remem er to validate your warranty y visiting
www.wisper ikes.com/mywarranty and filling in your details.
2 Before each use
It is important you perform a quick check of your ike every time you use it, checks
should include the following, if you find any damage or pro lems do not use the ike
until the pro lem has een solved or you have had the faulty item checked y a ike
mechanic or your retailer.
2.1 Check tyres for any visi le damage
2.2 Check tyre pressures (60psi / 4.1 ar)
2.3 Check for any lose nuts olts or fixings
2.4 Check rake functions
2.5 Check electronic functions
2.6 Check reflectors are in place and lights are working
2.7 Check your attery for any visi le signs of damage
3 Battery care
3.1 Before you use the attery for the first time it is est to give it a full deep charge
for 12 hours. To fully condition your new attery give it complete deep charge,
discharge cycles for the first three charges. This is achieved y charging your
attery for 12 hours and then using the ike until the attery is completely
drained. After this “conditioning” process you can then charge and discharge
the attery as and when you require for long or short periods.
3.2 If you are going to leave your attery uncharged for more than eight weeks it is
est left half charged. You should then re charge it every four weeks for two
hours to keep it in top condition.
3.3 Before setting off on any journey it is always etter to have a fully charged
attery.
3.4 Always remem er that you use up to three times more power when setting off
under the twist throttle. To preserve the life of each charge always set off using
pedal assist.
3.5 Do not expose the icycle or attery pack to fire, heat sources, acid or alkaline
su stances.

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3.6 When leaving your icycle during hot weather always leave in a shaded well
ventilated area
3.7 For est results always recharge the attery at room temperature
3.8 Before unloading the attery make sure it is turned off at the key, then raise the
saddle and unload the attery using its handle
3.9 If your attery is damaged or appears to e overheating for any reason
immediately return it to your retailer for advice and a safety check
4 Recharging your attery
4.1 First make sure the charger is turned off, connect
the output connector plug from the charger to the
attery, connect the charger to the mains and turn
on the mains power. Turn on the charger. The red
and yellow lamps on the charger indicate the
attery is charging, when the yellow light turns
green the attery fully charged. Always turn off the
charger and disconnect from the mains after
charging. Always disconnect the charger from the
mains efore disconnecting the charger from the
attery. It is possi le that the attery will take up to
12 hours to charge on the first three charges.
4.2 When charging the attery always do so in a dry and well ventilated area.
4.3 Do not leave the charger connected to the mains when not in use.
5 Water
5.1 Your electric icycle is rain and splash proof and can e used in all weathers.
5.2 The electrical components of the vehicle, such as motor, attery, and controller,
must not e su merged in water.
6 Maintenance and adjustments
6.1 IMPORTANT! Do not attempt to open the casings of the attery, motor or
controller it could e dangerous and all warranties will ecome void. If you
experience a pro lem contact our service department or your retailer.
6.2 Wheel spokes should e adjusted after 300 miles riding.
6.3 Handle ar and saddle tu es should never e raised eyond the maximum
indicated y a safety line around the tu es.

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6.4 Torque recommendations
Front axle nuts 46N.m
Back axle nuts 70N.m
Handlebar clamp Refer to illustration 15.1
Bolt 1 16N.m
Bolt 10N.m
Handlebar stem expander bolt 18- 0N.m
Seat pillar clamp nut/bolt 5-8N.m
Brake cable anchor bolt 5N.m
Brake centre bolt M6: 11N.m
Seat clamp nuts 4N.m
Cotter pin nuts R: 4 N.m
L: 46N.m
Gear shifter nuts 4N.m
V brake caliper nuts 10N.m
Rear carrier nuts 8N.m
Mudguard bracket nuts 8N.m
Other nuts torque depends on the size
M4 .5-4N.m
M5 4-6N.m
M6 6-7.5N.m
6.5 Your ike has a rear derailleur that will automatically tension your chain.
However if the chain ecomes loose or frequently comes off the front cog, you
can easily adjust the chain tension y loosening the rear axle nuts slightly, and
adjusting the tension olts. Make sure that the chain runs freely and re tighten
the axle nuts.
6.6 The rake leavers should lock the wheels when compressed half way etween
their open position and touching the handle ars. When they need adjusting
please follow the instructions on our we site www.wisper ikes.com Electric
Bikes, Manuals.
6.7 Warning Handle ar hand grips or tu e end plugs should e replaced if damaged,
as are tu e ends have een known to cause injury.
6.8 Warning If replacing forks they must have the same rake and same tu e inner
diameter as the originally fitted to the icycle.
IMPORTANT braking distances increase on wet or icy roads.

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6.10 Regularly lu ricate the gears and chain with light oil and the rake ushes (not
the rubber brake shoes or disc) with a little grease.
6.11 Recommended tools for proper maintenance
Torque wrench with N.m gradations
2, 4, 5, 6, 8 mm Allen wrenches (keys)
9, 10, 15 mm open-end wrenches
15 mm ox end wrench
Socket wrench, 14, 15, and 19 mm socket
T25 Torque wrench
No. 1 Phillips head screwdriver
Bicycle tu e patch kit
Tyre pump
7 Technical specifications & performance
Type Wisper Works 905se City
Performance (with 75kg 165l rider)
Assisted range 8A up to 65km (39 miles)
14A up to 110km (66 miles)
Battery only 8a up to 42km (25 miles)
14A up to 70km (42 miles)
Maximum speed 25kph (15.5mph)
Weight with attery 23.6kg max
Maximum load 130kg (240kg)
Battery specifications
Cell Type Advanced Environmental Lithium Polymer with BMS
Capacity 8Ah or 14Ah
Rated voltage 37V
Main Controller specifications
Low voltage safeguard 31.5V
Overload current safeguard 15A
Main hub motor specifications
Motor type Hi speed rushless
Rated power Aus NZ 200W / Europe 250W / USA Canada 350W
Rated voltage 36V
Charger Lithium 115 to 230V 36V fan cooled

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8 Simple Trou le shooting
Pro lem Possi le reasons Trou le shooting
Top speed too
slow
1. Low attery voltage
2. Handle ar control pro lem
3. Damage to motor driveline
1. Recharge attery fully
2. Call service
3. Call service
Power on ut
motor not working
1. Battery not connected position
2. Fused
3. Motor connection damaged
4. Handle ar control pro lem
1. Re install attery
2. Replace fuse
3. Call service
4. Call service
Driving shorter
distance per
recharge
1. Tyre pressure too low
2. Undercharge or charger fault
3. Battery capacity loss or
damage
4. Hill clim ing, frequent stops,
strong head winds, over
loading
1. Check pressures
2. Recharge completely or
have charger inspected
3. Replace attery
4. Use power assist and try and
avoid throttle only
Part 2 Controls and quipment
In this section we will descri e the functions and any specific maintenance needed on all
the main controls and ancillary equipment.
9 Battery on off and attery lock
9.1 Your Wisper ike has 1 set of 2 keys. The key for turns the attery on/off and
locks the attery in the ike. Please keep a careful note of the key num ers as
we cannot replace them without these num ers should they ecome mislaid.
9.2 On ikes uilt after April 2009 the attery is connected to the electrical system
of the ike automatically when you slide the attery into the frame. Pre April
2009 ikes need to e connected via a ca le that plugs into the side of the
attery. To turn on the ikes electrical system, turn the key in the attery
clockwise, to turn off the power turn the key anti clockwise.

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9.3 When the attery key has een turned to the on position the ike is ready for
use. The red utton on the handle ar isolates the power from the ike, when
the ike is “on” you will see the attery power lights illuminate a ove the red
utton. When the ike is “off the lights are not illuminated. When the ike is
“off” you will not get any assistance from the attery and motor and the ike is
effectively an unpowered push ike. Press the red utton to toggle etween
“on” and “off”
9.4 To lock the attery into the ike frame turn the key clockwise to unlock turn the
key anti clockwise. Read 3 and 4 for attery care and advice on charging at the
eginning of this manual.
9.5 The attery can e charged either on or off the ike.
9.6 To remove the attery turn off the power y turning the key to position “OFF”, If
your attery has a socket in its side (pre April 2009) disconnect the plug and
socket. If your ike is fitted with a connector at its ase (after April 2009) this is
not necessary. Remove the seat post. Using the handle on top of the attery lift
the attery out.
9.7 To replace the attery reverse the procedure for removing it.
On the handle bars
10 The red utton
10.1 When the red utton is pushed and the lights go out you have turned the ike
“off”. When the ike is “off” you will not get any assistance from the attery
and motor and the ike is effectively simply an unpowered push ike. To turn
the power ack on so the pedelec and throttle work again simply press the red
utton once, the lights will illuminate a ove the red utton showing the power
is on.
11 The green utton (not USA, Canada and some European countries)
11.1 The green utton (when fitted) can e found on the left hand side of the handle
ars. The green utton delimits the motor power and lets the rider ride the ike
a ove 25kph (15mph) with assistance from the motor to a out 30kph (19mph).
The green utton should only e used on private land and never on the pu lic
highway.
IMPORTANT WARNING
The use of the green button on the public highway in many countries turns the bike
into a moped and any rider operating the green button on the public highway would
render themselves open to prosecution, fines, penalty points and loss of driving
license. It is important that you verify the legality of the green button in your region, if
it is not legal do not use the bike and we will remove it for you free of charge.

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12 Pedelec mode and High Low ox
12.1 When you first ride your Wisper ike you will notice that after one turn of the
pedals the motor will start working assisting you to ride the ike y adding
power through the rear wheel. This is the standard or pedelec mode, to
continue using the pedelec mode you must keep turning the pedals, if you stop
the motor will stop and the ike will slow to a halt. If you start pedaling again
after one turn of the pedals the motor will start again.
12.2 You will find a small lack ox on the handle ars with High and Low printed
elow two green LEDs (small lights). When the Low utton is pressed and the
LED a ove illuminates the assistance power in pedelec mode is 40% of the
maximum power availa le from the motor. When the High utton is pressed
and the LED a ove illuminates the assistance power in pedelec mode is 80% of
the maximum.
12.3 High mode is generally used when you need the maximum amount of assistance
from the motor. Low mode is used when you do not need the instant assistance
power of 80%. Low mode is used in high traffic situations or poor conditions
such as ice and snow when 80% of full power could e dangerous.
13 Throttle
13.1 The throttle can e used in some countries such as the UK, Australia, New
Zealand USA, and Canada independently to the pedelec mode. Check with your
supplier if it is legal in your region. Bikes are usually set up to e legal in the
region in which they are supplied.
13.2 The independent use of the throttle, when availa le, will ena le you to use the
throttle without pedaling.
13.3 The use of the throttle in pedelec mode is legal in most countries. Use of the
throttle in pedelec mode ena les you to turn up the power to the motor as long
as you are pedaling the ike, if you stop pedaling the motor will stop too. If you
have the pedelec mode set to Low, you can increase the assistance from the
motor from 40% to 100% of availa le power simply ut turning the throttle
towards you. This also works in High mode and will let you increase the power
from 80% to 100% of availa le power.
IMPORTANT Make sure your throttle grip and the grip on the left hand side of your
handle bars are always intact, in good condition and on the bike. Uncovered handlebar
tubes can be very dangerous in case of a collision.

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14 Brakes
14.1 Front: V rake Rear: V rake
14.2 The rakes on your Wisper ike are fitted with cut outs which are required y
law. This means that when you pull on either the ack or front rake lever the
motor immediately stops working.
14.3 How to adjust and maintain your brakes
Once a month, inspect rake pads for wear. If the grooves in the raking
surface are less than 2 mm deep replace the pads. Replace disc rake pads that
are thinner than 1.0 mm.
To replace V brake pads
14.3.1. Use 5mm Allen key to loosen olt A and
take the ca le out. Use 5mm Allen key
to undo olt C on the right & left, and
remove the spacers and washers.
14.3.2. Install new rake pads, then with oth
pads pressed against the wheel rim,
ensure that distance B (in the diagram)
does not exceed 65mm. To decrease
distance-B, exchange wide & narrow
spacers on each rake pad. Before
finally tightening rake pads, make sure
they are aligned correctly on the rim,
and there is a gap of 1mm etween the
top of the rim and the top of the pad.
Hold each pad against the rim (one at a
time) & tighten olt C. Finally tightening them to 6-8N.m
14.3.3. Insert ca le ack into olt A, slot ca le guide pipe into holder and fit
protector over guide pipe end. Set ca le in olt A so that the com ined
pad/rim clearance (the gaps from left pad to left rim surface and from
right pad to right rim surface) is 2mm, then tighten olt A. Finally
tightening it to 6-8N.M.
Balance rake arms with screw D. Depress rake lever a few times while
Checking to see that tension is equal for oth arms. Pad/rim contact
should occur at the same time each side. Clearance should e 1mm each
side.
14.3.4. Adjust pads so they are properly aligned (see step 2), as tension
adjustment will pro a ly have altered original pad alignment.
Warning: If you are unsure about any part of the installation process you should seek
advice from Wisper service center or qualified mechanic.

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15 Stem handle ar clamp
15.1 Your ike has een fitted with a quick release handle ar clamp that allows you
to change the position of the ars quickly and easily to find the most
comforta le riding position.
15.2 The stem and handle ars need to e fitted efore you use the ike.
15.3 To fit, insert the stem into the front tu e at least to the position of the
“Minimum insertion” mark.
15.4 Tighten the quill olt and fix stem.
14.5 Push in the direction of the arrow slide cap 1 and lift lever 2.
15.6 Adjust stem to preferred angle and lightly tighten BOLT 1 then turn BOLT 2
to suita le position so that the slide cap 1 will fit when locked, then press down
lever 2 to lock the handle ars in position.
15.7 Test the ars to make certain they are tight and do not rotate. If they are not
tight enough, lift lever 2, adjust BOLT 2 again then press down lever 2. Repeat
until the handle ars are tight and safe.
IMPORTANT when fitting always lock Bolt 1 first so the body and first cap touch then
lock Bolt 2.
15.8 When adjusting stem angle, it is not necessary to adjust olts.
16 The front connection ox
16.1 The front connection ox allows for the easy removal for repair
or replacement of any of the electronic components on the
handle ars.

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17 Quick release saddle height adjustment
17.1 Your Wisper ike has een fitted with a quick release saddle post collar to
facilitate the movement of the saddle to remove the attery or to change the
riding position.
17.2 It is important that the nut on the collar is tightened so the post will move in
the ike tu e firmly. Make this adjustment with the quick release lever in the
open position.
17.3 Adjust the seat to the correct height and close the lever. When you sit on the
saddle there should e no vertical movement at all in the saddle post.
18 Saddle post suspension
18.1 For your comfort your ike has een fitted with saddle post suspension it has
een set for a person weighing 75kg. If you are lighter than this you may not
feel any enefit and if you are heavier you may feel the suspension ottoming
out.
18.2 The suspension post can e adjusted y removing the whole post with saddle
attached from the ike. On the ottom of the post you will find an alan key
adjuster simply turn it clockwise to tension the spring for heavier people and
anticlockwise to release tension for lighter people.
IMPORTANT never raise the saddle past the point where the maximum marks on the
saddle post are visible above the quick release collar
19 Rims and spokes
19.1 It is essential to get your spokes checked and tightened after 300 miles. This is a
free service provided y your supplier. If this service has not een undertaken at
the correct time this may cause damage to the wheels and spokes that will not
covered under our guarantee.
20 Chain and drive wheel
20.1 The chain and drive wheel are made from rust proof materials.
20.2 Lightly oil with icycle chain oil the chain at least once a month.
20.2 Because your ike has a rear derailleur the chain will e automatically adjusted.
21 Derailleur maintenance and adjustment
21.1 Required Tools You’ll need a dry cloth, a Phillips screwdriver, a 5mm Allen
wrench, and a light lu ricant.

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21.2 Rear Derailleur
21.3 How derailleur work Almost all modern derailleur function the same asic way.
They are designed to move (or derail) the chain from one sprocket to the next.
The upper guide pulley (or jockey pulley) moves the chain in oth directions.
For instance, when you want to clim a hill, you shift down to a lower gear. This
pulls the shift ca le and forces the guide pulley to change to a igger sprocket.
When you want to go faster, you adjust the shifter to a higher gear. This
releases shift ca le tension and allows the derailleur springs to pull the guide
pulley ack down to a smaller gear. Each time you shift gears, the length of
chain changes. The lower tension pulley is spring-loaded to take up this slack.
21.4 Adjustment screws There are 3 adjustment screws - the B-Screw (B-tension
adjustment), the H-Screw (high gear limit stop) and the L-Screw (low gear limit
stop). Adjustments on these screws should always e made in 1/4 turn
increments.
21.5 B-Tension Adjustment The B-Screw controls the derailleur ody’s angle in
relation to the sprocket-set. Shift down to the largest sprocket and check the
distance etween the guide pulley and the large sprocket. If the guide pulley is
ru ing on the sprocket, tighten the B-screw clockwise to increase tension and
move the pulley away from the sprocket. If there is a large gap etween the
pulley and sprocket, loosen the B-screw until the pulley ru s the sprocket, and
then tighten it until it just clears.

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21.6 High Gear Limit Stop The H-Limit screw high gear limit stop prevents the guide
pulley from shifting any further past the highest gear and into the axle. In order
to adjust it properly there must e no tension on the lower inner ca le. If you
feel tension, loosen the ca le adjuster until there is none. Now check from
ehind how the chain is riding on the smallest sprocket. If it looks like it wants
ride off into the axle, tighten the H-screw clockwise until it lines up. If it looks
like it is ru ing on the next gear, loosen the screw until the chain is nicely
centered on the sprocket. Now re-adjust the ca le tension until the derailleur
shifts smoothly down to the next gear.
21.7 Low Gear Limit Stop The L-Limit screw prevents the guide pulley from shifting
any further past the lowest gear and into the wheel spokes. Shift down to the
lowest gear, step ehind the ike, and check how the chain rides on the
sprocket. If it looks like it wants to ride into the spokes, tighten the L-screw
clockwise until it is centered on the sprocket. If it looks like it wants to shift
down, loosen the screw until it lines up. As an extra precaution you can use
your thum to gently push the derailleur ody and make sure the chain will not
run into the spokes, as this could o viously have a nasty effect on oth you and
your ike.
21.8 Cable Adjustment The ca le tension adjuster defines how far up or down the
derailleur moves. Step ack so you can see the chain and sprocket alignment,
and then through the gears in oth directions, first shifting up two and down
one, and then down two and up one. The chain should look centered on each
sprocket. If it is ru ing on a larger gear it means there is too much tension on
the ca le. Loosen the tension y turning the adjuster clockwise. If it wants to
jump down to a smaller gear it needs more tension. Increase the tension y
turning the adjuster counter-clockwise.
21.9 Adjusting by ear You can also use sound to check the adjustment. There is
always a ase-level of noise that can e heard in every gear. This noise will
increase in a slightly different way depending on which way the tension is out
of adjustment. If there is too much tension you will hear a metallic ru ing
sound, ut if there is too little tension you will hear a clicking noise as the chain
tries to jump to a smaller sprocket. There is usually a ca le tension adjuster on
your shift lever. With practice you will e a le to make small ca le tension
adjustments while you are riding.
21.10 Lubrication Now that the derailleur is adjusted, always apply a drop of
lu rication to the derailleur’s many moving parts. This will help prevent wear
from dirt and rust, and it will keep your gears shifting smoothly. Wipe away any
excess lu e and take your ike for a test ride to make sure all the gears are
working smoothly.

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Warranty
Repair or replacement of components
IMPORTANT To validate this Warranty the retail customer must register the bike at
www.wisperbikes/mywarranty within 14 days of purchase.
Only use this product in accordance with this user manual. We offer a limited warranty of on the
following items.
1 The main frame Si years
2 Gears, hub motor, bearings, front forks Two years
3 Paintwork (e cluding deliberate or accidental damage) Two years
4 Controller and Charger Two years
5 Battery casing, battery leak, battery capacity step-down more than 30% Two years
6 Handle bar controls, brakes (e cluding brake shoes and pads) One year
7 Front and rear a le, flywheel or chain wheel One year
8 Electro plating, on wheel rims, rack and kickstand Si months
9 Other cases that render the bike unsafe to use. By negotiation
1. If the product has a quality fault within 15 days of delivery the part will be repaired or replaced or
in e ceptional circumstances we may replace the whole vehicle.
2. The period of assurance shall commence from the day delivery was made to the retail customer,
or from the day the retail customer collected the bike from the retailer.
3. To validate this Warranty the retail customer must register his / her bike at
www.wisperbikes/mywarranty within 14 days of purchase.
Exceptions to Limited Warranties
1. Damage resulting from misuse, not maintaining the vehicle or not following the guidelines within
this user guide
2. Accidental or deliberate damage
3. Damage due to private repair or alteration by user or unauthorised service centre.
4. Failure to produce invoice or proof of purchase.
5. Spare parts and components worn in normal use.
6. Failure to register your bike at www.wisperbikes/mywarranty within 14 days of purchase.

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It is essential to get your spokes checked and tightened after 300 miles. This is a free
service provided by your supplier. If this service has not been undertaken at the
correct time this may cause damage to the wheels and spokes that will not be covered
under our guarantee.
Getting the est range from your electric ike.
The range you can achieve from your Wisper electric ike can e reduced dramatically
for some very simple reasons. Im good conditions you should e a le to achieve the
following ranges from your ike when using pedal assist.
14A attery 66 miles (110km)
8A attery 39 miles (65km)
To make sure you optimise your range please follow the guidelines set out elow.
1 When using full throttle from stationary, your 250W motor will draw a out 550W.
Consider that when cruising along at 15mph / 25kph, with mild pedalling, you only
draw a out 150W hence, using pedal assist instead of full throttle from stationary
saves a good amount of power and will increase your range.
2 Check your tyre pressures. The rolling resistance on the road is at is least when the
tyres are at the correct pressure 60psi or 4.1 ar. Half flat tyres can half your
range!
3 Air resistance is important if you are wearing ig aggy clothes in the winter expect
lower range than in the summer when your clothing is less air resistant. Also
remem er that panniers and ags on the handle ars reduce range.
4 Weight affects the range considera ly. If you are carrying extra weight in your
panniers or towing you range will effected.
5 Battery temperature will make a serious difference in achieva le range. It is est
to charge your attery at room temperature keep it indoors efore you start your
journey with the maximum range availa le y loading a warm attery.
There are of course other factors such as ike maintenance, terrain, road conditions and
weather ut if you keep the five points mentioned a ove in mind you will find your
range is massively improved.
Copyright January 2009 Wisper Ltd