Ampler Curt 2020 User manual

V2.3 03.11.20
Ampler Manual
Curt 2020

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V2.3 03.11.20
2 Table of Content
3 What’s in the box?
3 Frame number
4 Assembly
7 Using the Power Buon
9 Ampler Bikes app
10 Maintenance
13 Electric system support
16 Charger safety manual
17 Trailer adapter
18 Specifications

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3 What’s in the box?
The frame number is on the right side of the bike on the chainstay,
next to the rear dropout.
Frame number
The bike will arrive at your doorstep in a big cardboard box.
Inside this you will find:
• Your new Ampler bike
• Bike passport
• 4 mm hex key
• 6 mm hex key
• Pedals with reflectors
• Charger
• Bicycle bell
• Additional reflectors: four spoke reflectors, front and rear reflectors
• Optional: ABUS Bordo lock with holder and keys, additional charger,
trailer adapter

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Adjust the handlebar 1. Take the 4 mm hex key and loosen the side bolts of the stem. Turn
the handlebar to the riding position. Make sure the handlebar is
aligned with the front wheel.
2. Take the 4 mm hex key and lightly tighten the top cap bolt on the
handlebar stem. This will make sure the headset will not have any
play in it.
90°
3. Take the 4 mm hex key and carefully tighten the same stem bolts
you loosened 2 steps back.
Turn your handlebar left and right and make sure it spins freely. If
it feels a bit too tight, loosen the stem bolts and just slightly
loosen the top cap.
• 4 mm hex key
• 6 mm hex key
• Pedals
You will need
Assembly

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5 Assembly
Insert the pedals 1. The pedals are marked with R(right) or L(left). The R pedal goes
on the chainwheel side and the L pedal goes on the non-chain-
wheel side.
2. Tighten the pedals with the 6 mm hex key.
Pedals need to be tight so make sure you put some force into it.
Expect resistance only at the end of the thread, if the pedal is hard to
thread in from the beginning then the threads must be inspected.
LR
left right
1. Clamp the white front reflector below the front light.
2. Attach the red rear reflector to the bracket. Wrap the bracket
around the seat post and secure it with the screw.
3. Attach one orange reflector on the front wheel, one on the rear
wheel. Pick a spoke, place the reflector on the spoke and push the
clasp at the reflector mount. Fasten it with a screwdriver.
Mount the reflectors

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6
The bike has made a long journey before reaching you, double-check
the following things:
1. Check the wheels. Spin the wheels and see if they run freely.
2. Check the tyres pressure and make sure the tyres are full before
your first ride. You can always check the recommended tyres
pressure noted on the side walls of the tyres.
3. Test the brakes. Spin the front wheel and the rear wheel separately.
Apply the brake levers separately and make sure the brakes are
working correctly.
4. Check the drivetrain. Pedal by hand and check if the chain or the
belt drive runs freely. Shift the gears on the 10-speed bike.
5. Check your bike visually. Does everything seem alright?
Remember to check your bike occasionally and view our Ampler Bikes
Maintenance information.
Final check before your first ride
Take the 4 mm hex key and adjust the perfect seat height
1. Place the bike in a way that allows you to support yourself against
a wall when sitting on it.
2. Put one pedal in its lowest position.
3. Hop on and try to reach the pedal with your heel.
4. You have the perfect seat height when you are able to place your
heel on the pedal with an almost fully stretched leg. Do not lower
the seatpost below the minimum insertion length marked on the
post.
5. Tighten your seat bolts.
And you are good to go!
Adjust the seat height
Assembly

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7 Using the Power Buon
Just press the power button once on the power panel, located on the
left side of the bike.
Turning the bike on
Charging the bike
State of charge
The battery level is between 40%-90% when you receive it. You can
either plug in the charger and make the baery full, but you can also
grab it out of the box and go.
Charging the bike is like charging a laptop. Just connect the bike with
a standard wall power outlet (110–240 V AC) and hook the magnetic
charger plug to the charging socket located on the power panel and
let it charge. Once the LED on the charger turns from red to green it
has been fully charged. It takes about 2.5 hours from empty to full.
Ampler charger will automatically stop charging when the battery is
full. There is no risk of overcharging the battery when you forget to
unplug it. For your protection, please read carefully “Charger safety
manual” chapter below before operating the Ampler battery charger.
The power button also acts as a battery charge monitor. The LED
colours according to the state of charge.
To turn the lights ON and OFF, hold the power button for 1–2 seconds.
You can turn the lights on/off also from your Ampler mobile app.
The bike will remember the last setting, so the lights will be ON when
you leave them on next time you power the bike.
Turning the lights on
bike is OFF 1x short press bike is ON
bike is ON press + hold front + rear lights
switch ON/OFF
release
74–50% 49–10% 9–0%
100–75%

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The bike has two standardized assist modes:
• Normal (1) – 25 km/h, 250 W, 100%
(max assist speed, motor power, assist level)
• Boost (2) – 25 km/h, 250 W, 150%
(max assist speed, motor power, assist level)
To switch between the assist modes, hold the power button down for
3 seconds and release it as soon as the buon turns orange.
After releasing the button, it will blink ONCE if it changes to Normal
Mode (assist mode 1) or TWICE if
it changes to Boost Mode (assist mode 2).
You can also change the support modes on the dashboard of your
Ampler app.
You can fully customise the assist modes with the Ampler Bikes app
under ‘Vehicle settings’.
Changing the assist modes
bike is ON press + hold release LED blinks 1x assist mode 1
press + hold release LED blinks 2x assist mode 2bike is ON
Using the Power Buon

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To fully customise your riding experience please download the Ampler
Bikes app available for Android and iOS.
You can download the app for IOS from the App store, for Android
(Android 4.4 onwards) in play store.
Download the app, stay close to your bike, switch on the Bluetooth,
pair your smartphone with your bike and log in. The Ampler smart-
phone application lets you fully customise your riding experience with
the Ampler e-bike. Here’s some of the examples you can do:
1. Download the Ampler app
2. Register with your Facebook account or e-mail
3. Pair your bike with your phone over a Bluetooth connection
Ampler Bikes App
To connect the bike with the app
Stay informed about your
bike’s electronics
Adjust the motor power and
max. assist speed
You have the option to change the motor
parameters from the smartphone:
• motor power increase or decrease your
acceleration
• max assist speed–the speed at which
the electric assist stops helping you
• assist level– how much the motor as-
sists you in proportion to your input
Or switch the lights on/off or to “lights
only” mode.
• Check your battery range
• Receive updates about your bike’s
electronics
• Get the latest Firmware
• Contact Ampler for troubleshooting and
servicing

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10 Maintenance
Bicycles are technical yet sensitive creatures that need a little bit of
love, attention and care every now and then. Maintaining your bicycle
regularly will keep it riding (and riding well) for a lot longer and will
give you more range compared to a bike which has empty tyres and
running brakes. It’s a lot like maintaining a car–you check some
things on a daily and you take it to professional service for a check-up
and maintenance after a certain number of kilometres.
Take care of your bike and have the bike maintained regularly in every
3000 km or at least once a year. The actual needed maintenance
interval can vary depending on your riding habits, road quality and
weather conditions.
Maintaining your Ampler bike is just like maintaining a regular bicycle
and all professional bike shops can carry out the maintenance of our
bikes.
• Cleaning your bike will help to quality and keep the dirt and dust
from getting into the engine and bottom bracket.
• Use soap, water and a variety of sponges and brushes to thoroughly
clean the bike
• The power panel of the bike is washable and waterproof. Now and
then clean (non-metallic tool) and lubricate the charging port with a
multi-purpose oil (for example multi-spray).
• Avoid using pressure washers, as the pressure driven water will get
dirt, sand and dust particles inside tiny compartments, causing rust
and problems later down the line.
• Check tyre pressure regularly – the recommended tyre pressure is
given on the side wall of the tyre.
• The tyres should always be inflated so that the pressure is within
the manufacturer’s recommendation for minimum and maximum
tyre pressure. Full will keep the battery range high and protect the
rim and tyre against damages.
• By the way: If you are more of a lightweight, you can use the lower
limit of the recommended tyre pressure. If you weigh a little more
or regularly load heavy items onto the carrier of your rear carrier,
stay just a little below the maximum pressure. How can you even
know the current air pressure? The best way to find out is to buy a
stand pump with a pressure gauge or to stop by someone who has
one.
• Look out for tyre wear. Depending on how and where you ride your
bike, the tyres can wear at a different pace. If you notice the tread
worn out, change the tyres.
• If it gets cold and icy outside, get some winter tyres. Before you buy
any, make sure that they fit the rims and frame of your Ampler
e-bike. You can either get advice on this at a bike shop, where the
bicycle tyres will certainly be fitted for a small extra charge; or you
can contact our support team, who can advise you on technical
questions
(phone: [phone] / e-mail: [e-mail]).
Clean your bike regularly
Check the tyres

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• Check the chain tension –if it has slackened over time (it looks
saggy), get it adjusted. If you feel you are not right for the job, you
can easily get it done in your local bicycle shop.
• Replace he chain before the wear is reached to 0,75%
• Making sure your chain is lubed will prevent unexpected and pre-
mature wear to the drivetrain.
• If the chain feels a little dry, clean it with a rag and then add some
chain lubricant. Spin the pedals around a couple of times to spread
the lubricant evenly.
• A carbon belt drive does not need any oil, however needs to be
cleaned after riding in dirty conditions with water. You can apply a
thin coating of dry silicone spray to the tooth side of the belt if
necessary.
• Avoid using the lubricant on brake pads, rotors or rims. Spray is not
recommended, use liquid oil.
• Check the brakes regularly–they should be cleaned and adjusted.
• Over time the disc brakes get less efficient at breaking. To stay safe,
get your brakes inspected, serviced and changed if necessary by a
professional workshop.
• Squeezing your brakes down should feel solid and consistent–the
lever should not touch the handlebar. If you feel that your brakes
aren’t effective, get a professional to check them out.
• Take a good look at the brake pads on your bike every few weeks to
see how they are holding up. There shouldn’t be any dirt or oil on
the pads. Often times, the brakes will make a howling noise if
there’s oil on them.
• Check the brake hoses for wear and tear– if you can see that the
house is crumbling or broken in any place, get it checked immedia-
tely by a professional.
• After first couple of weeks check the bolts and nuts. If there is too
much play in the bolts, tighten them up a little bit and see if you can
identify the cause of the looseness. Don’t tighten the bolts too far.
• Re-tighten the bolts on the handlebar if needed.
• Check the crank bolts (8 mm hex key, not included), tighten them if
needed.
Re-tighten the pedals, using the key that came with the bike.
• Re-tighten the bottom bracket eccentric bolts.
• If you’re not riding and charging your bike consistently, charge it
every five–six week or so to maintain the state of the battery. Due
to Bluetooth the bike has a little power consumption even when
switched off.
• Do not keep the bike in blazing sun or freezing cold over the exten-
ded period if it is not being used.
• Make sure the charging socket and the magnetic plug are dry and
clean before you plug in the charger.
• Store the bike in a dry place over the winter– it doesn’t need to be
heated, however below 0 is not recommended.
• Charging the battery should take place indoors (above 0 degrees) or/
and in dry environment. Do not keep the charger outside.
Check the brakes
Motor and battery maintenance
Keep the bolts tight
Maintenance
Check the chain

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Beware that when you bike in the cold, the range and battery
capacity will be lower than average. This is completely normal, and
it won’t affect the battery’s overall state or lifespan.
• When you finish cycling in the cold, make sure that the bike has
time to warm up a little before you charge it.
Maintaining your Ampler bike is just like maintaining
a regular bicycle and all professional bike shops can carry out the
maintenance of our bikes.
The first professional check-up should take place after the first 500
kilometres –this will ensure that everything is working as it should.
After that, have the bike service regularly every 3000 km.
If you ride often and don’t count the riding distance, make sure to
take it to a professional bike shop for maintenance at least twice
every season, ideally even three times
• Before the start of the season
• Mid-way through
• At the end of the season.
This way, all the important aspects like brake oil levels, and the
condition of brake pads and tyres get checked, and the internal parts
like the crank set and wheel hubs get cleaned thoroughly.
That’s it –while it’s a long list of things to look out for, it’s good to
remember that maintaining your bike often is important for both
safety and ride experience reasons.
Have fun riding!
Maintenance
Professional maintenance
schedule

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Ampler hardware (the battery, controller and sensors) are inserted
into the down tube. This keeps the bike clean, the weight down, and
the components safe from outside elements such as the rain and cold
temperature.
The hardware doesn’t need any special maintenance. However, we
recommend to keep your bike Firmware up to date and calibrate your
bike sensors from time to time. This will help to keep your bike in a
good shape for longer time.
Software restart clears up your bikes memory and starts it fresh. It
helps to resolve any problems connected to the hardware, and any
communication problems between the bike and the mobile app.
To reset your bike
1. Hold down the power button for 10 seconds. This will reset and
turn off your bike.
2. Turn on the bike again from the power button.
Ampler bikes are pedelecs and they have sensors regulating the
motor, measuring the speed of pedalling and your own input power.
Therefore, the bike is easy to use and the motor power is controlled
according to your own pedaling force. This creates a safe and smooth
riding experience.
We recommend to calibrate your bike’s torque sensor every 3–6
months, or in case the bike feels over- or underpowered. Torque
sensor calibration is done via the Ampler app:
1. Adjust the left crank forward, parallel to the ground.
2. Connect the Ampler app with your bike via Bluetooth
3. Open ‘Vehicle’ setting from the menu
4. Click on ‘torque sensor calibration’
5. The LED blinks in orange
6. The LED will turn green once the calibration is successful
Re-adjusting the sensor signal helps to improve your bike’s responsi-
veness and power to its original figures.
Every Ampler has a motor controller– the so-called brain of your bike
that connects all the elctronics and makes sure everything runs
smoothly. The motor controller is managed by Firmware (the software
that controls the hardware). To guarantee the best riding experience,
we recommend keeping your bike’s Firmware up to date.
Factory calibration will adjust all your bike's sensors and align the
functionality of all electronic components. Use this calibration only if
any of the electronic components have been replaced or only if re-
commended by Ampler support.
CAUTION! During the factory calibration, the motor starts on its own
and thus the rear wheel will start spinning. It is necessary for you to
Software restart
Electric system support
Torque sensor calibration
Factory calibration

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li the rear wheel off the ground during the whole process to prevent
damages or injury.
For a successful factory calibration:
1. Lift the bike so that the rear wheel can spin freely.
2. Place the left crank horizontally towards the ground facing towards
the direction of travel.
3. Hold down the button (approx. 7-10 seconds) until it turns GREEN
from RED. As soon as the LED turns GREEN, release the button.
4. The LED starts blinking ORANGE and the bike is processing the
calibration of torque and motor sensors. After some moments, the
motor starts and thus the wheel starts spinning for around 15 se-
conds. After the motor stops, the LED should blink GREEN after about
5 seconds and the bike will automatically turn off. You can put the
wheel down again.
Now the motor and torque sensor are calibrated and assist modes are
set to default, you might need to adjust them again through the app.
Turn the bike on again and you are ready to use your Ampler!
Firmware update is done via the Ampler mobile app. If your bike is
connected to the app, you will get a notification in your app about the
new available Firmware. Please go to the Vehicle seings to update
your Firmware.
Before starting the update, make sure:
• You have the latest Ampler app version
• You have internet connection on your phone
• Your phone’s battery is not running low
• The battery level of the bike is more than 25%
• You have registered and paired the app with your bike
The update is done over Bluetooth in several steps. All the steps are
almost identical, and they need to be done in a row. This means that
after completing the first update, if there will be a second update still
available –you will also need to complete this. The updates should
take about a minute to complete.
If you experience any problems with updating the Firmware, please
follow troubleshooting instructions below.
Flow A
1. Turn Bluetooth OFF
2. Turn Bluetooth ON
3. Wait 10 seconds for connecting
If there is no connection, start flow B. If the connection is established,
check if there is another Firmware update available and complete that
one as well.
Flow B
1. Close the Ampler app on the background
Troubleshooting the Firmware
update
Electric system support
Firmware update

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15 Electric system support
2. Go to Bluetooth settings
3. Find the Ampler Bike Bluetooth ID under your Bluetooth devices
and click the “Info” button. Press “Forgot This Device”
4. Turn Bluetooth OFF and then back ON under settings
5. Open the Ampler app
6. Pair your bike with your smartphone
7. Check if the update is available and complete the update
If a new firmware version becomes available in the future, you will be
notified within the app. Meanwhile you can check the firmware status
in the Vehicle view– if the firmware is up to date, you’ll see the infor-
mation in the lower part of the screen in the vehicle view.

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For your protection, please read this manual carefully before operating
the Ampler battery charger.
The charger is designed for indoor use only. Do not expose it to rain,
snow or expose the device to elevated temperatures.
Only use the genuine Ampler charger designated for your Ampler
e-bike. Do not use this charger for other batteries. Also, do not use
other battery chargers for your Ampler e-bike.
Store the charger in a cool and dry place.
Always check that the magnetic charging plug and connector are
clean and dry. Any electrically conducting particles at the connection
can damage the charger or the electrical system of the e-bike.
During charging the charger can become moderately hot. Always place
the charger in a well-ventilated place and keep it away from combus-
tible materials.
Children should be supervised by an adult when using the product.
This charger must not be disposed with domestic waste and should
be disposed at an authorized place for recycling electrical appliances.
Charger safety manual
Important

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
Trailer adapter
Ampler trailer adapter is compatible with most Thule, Burley and
Croozer trailers.
1. Remove the nut from the left side of the rear dropout, located next
to the motor. Do not remove the motor torque washer from the
dropout– keep it attached to the axle.
2. Attach the Ampler motor axle adapter to the frame.Use a 19 mm
wrench and make sure the axle adapter is securely fastened.
3. Finally, insert the two security washers, Thule trailer mount and
fasten them by using a 13 mm wrench to tighten the outside bolt.


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18 Specifications
Sizes Small 50 cm, Medium 54 cm, Large 58 cm
Parts
Frame Aluminum Alloy 6061, Double butted
Fork Carbon 1 1/8"- 1 1/2", 12 mm Thru-axle
Crankset Alloy 170 mm
Gear shift
Single-speed configuration:
60/20 Gates Carbon Drive CDX
Front sprocket: CDX 60 tooth
Rear sprocket: CDX 20 tooth
10-gear configuration:
Shimano Deore M6000 10-speed upgrade
Derailleur: Shimano M6000
Shifter: Shimano M6000 10-spd
Cassette: CS-5700 11-28T
Chain: Shimano/Sram compatible 10-speed chain
Chainring: 42 T Narrow/Wide
Brakes Shimano M6000 hydraulic disc brakes
Brake pads Shimano G02S
Rims Asymmetrical 28 mm rims with sealed bearing hubs, 36H
Tyres Continental Grand Prix 4-Season, 32-622 mm
Wheels 28"
Weight 13.5 kg (Single-speed belt) / 14.3 kg (10-speed chain)
Electronics
Assist speed 25 km/h
Range 45–100 km depending on terrain and assist mode
Battery 48 V 336 Wh LG Li-ion battery
Motor 48 V 250 W rear hub motor
Control mode Precise pedal torque-sensing motor control system
Connectivity Smartphone connectivity with option to change
motor settings
Charger 3A Li-ion charger with Rosenberger magnetic plug
Charging time 2.5 hours for a full charge
Lights Front: Busch+Müller IQ2 Eyc
Rear: LightSKIN integrated seat post LED light (StVZO approved)