ONSRA Electric Skateboard User Manual

Your first ride in six steps. Each step links to the full chapter.

• Unbox & checkUnpack the board, charger and ONSRA NX remote. Before every ride check screws, wheels, trucks, belts/drive and the deck – see Read before riding. Do not overtighten screws or use power tools.
• Charge board & remoteCharge with the original charger only. Solid red = charging, green = full. Stay nearby, never charge overnight or when anything is wet – see Charging. Don't forget the remote.
• Power on & pairPush the board's power button, hold the remote's power button for 2 s. If the remote isn't connected, follow Pairing.
• Select the correct drive typeOn the NX remote set units, motor type, wheel size and (belt/gear) the gear ratio:
  Belt Drive, poles 7 – VELAR / VELAR 2.0 belt, BLACK Carve 3, CHALLENGER 2.0 · Direct Drive – CHALLENGER (1st gen, Direct Drive version) · Gear drive – VELAR Gear Drive, BC4: select “Belt Drive”, poles 7, gear ratio VELAR Gear Drive 4.3 · BC4 Street 2.6 / AT 4.3 · ZENO: hub motor – on the NX still select Motor Type = Belt Drive.
• Gear upHelmet required at all times, plus elbow pads, knee pads, gloves and closed-toe shoes – see Safety. Check whether and where you are allowed to ride.
• First rideStart in ECO on a flat, dry, empty paved area. Be gentle with the thumb wheel, lean forward to accelerate and back to brake (Stance). Move to CRUISE/SPORT only once you feel in control.

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Pick your board from the list to see its parts, specs and charging port.

01 / 04VELAR 2.0 Belt Drive · Gear Drive

Parts · Belt Drive

VELAR 2.0 belt drive: gear ratio 4.4 · NX: Belt Drive, poles 7

1. Belt Drive Motors
2. Wheels
3. Heatsink
4. Deck
5. Carbon Fiber Enclosure
6. Front Trucks
7. Charging Port
8. Power Button

Charging the VELAR 2.0

See Charging for the safety rules and the charge indicator light.

Specs · VELAR 2.0 Belt Drive

DriveBelt drive · 66T wheel / 15T motor · ratio 4.4On the NX remote: select Belt Drive, poles 7

Motors · ESC2× 3500 W 6384 150KvORION 2× 120 A max (per motor)

Wheels200 mm pneumatic AT

Range60 km / 37 miUp to 70 km / 44 mi in optimal conditions

Top speed65 km/h / 40 mphUp to 70 km/h / 43 mph

Battery1036 Wh · 14S4P · 20 Ah

Weight19.4 kg / 42.7 lbs

Deck · enclosureCarbon fiber (deck & enclosure)

Deck size · wheelbase92.3 × 28.3 cm / 36.3 × 11.1″Wheelbase 96.5 cm / 38″

Trucks · bushingsONSRA Channel CNC, 43 cm / 16.9″Bushings 65A

Recharge4–5 h4.0 A charger, 58.8 V

Max load150 kg / 330 lbsIn the box: spare belts included

VELAR 2.0 Gear Drive

The all-terrain VELAR with sealed CNC gear drives instead of belts – gear ratio 4.3, 200 mm pneumatic AT wheels and a carbon fiber enclosure.

Legend · VELAR 2.0 Gear Drive

1. 1Gear-Drive Motors (6384 150Kv)
2. 2Sealed CNC Gear-Drive Housings
3. 3CNC Hubs w/ Gear-Drive Adapter
4. 4200 mm Pneumatic AT Wheels
5. 5Deck (Carbon Fiber)
6. 6Enclosure (Carbon Fiber)
7. 7Channel Trucks (CNC, 43 cm)
8. 8Charging Port
9. 9Power Button

Gear drive · NX remote

Gear-drive riders must select 'Belt Drive' as the motor/drive type on the NX remote. This applies to the VELAR 2.0 Gear Drive and the BLACK Carve 4 (BC4). Set Motor Type = Belt Drive and Motor Poles = 7 – the same as belt-drive boards – then enter the gear ratio (VELAR 2.0 Gear Drive 4.3 · BC4 Street 2.6 · BC4 AT 4.3) and your wheel size. There is no separate “Gear Drive” option.

DriveGear drive · ratio 4.3On the NX remote: select Belt Drive

Motors6384 150Kv

Wheels200 mm pneumatic ATSet wheel size 200 mm on the remote · tyre pressure: see Additional information

Deck · enclosureCarbon fiber (deck & enclosure)

TrucksONSRA Channel Trucks, CNC, 43 cm

Max load150 kg / 330 lbsAll VELAR versions

Measurements · official dimensions

Length115 cm / 45″

Deck length92 cm / 36″Deck 92.3 × 28.3 cm · wheelbase 96.5 cm / 38″

Deck width28 cm / 11″

Across the wheels46 cm / 18″

Drop-down · ground clearance7.8 cm / 3″ · 8 cm / 3.2″

NX remote setup · VELAR 2.0 Gear Drive

1. Motor type: Belt Drive (gear-drive riders always select Belt Drive).

2. Wheel size: 200 mm.

3. Gear ratio: 4.3.

4. Motor poles: 7.

02 / 04BLACK Carve 4 Gear Drive · Street & AT

BLACK Carve 4 (BC4) · Gear Drive

The BC4 uses an interchangeable gear drive (not belts). Ride it on 115 mm rubber street wheels or 200 mm AT wheels.

Legend · BC4

1. 1Gear-Drive Motors (6475 170Kv)
2. 2Gear Drive (interchangeable)
3. 3Wheels (115 mm Rubber / 200 mm AT)
4. 4TKP CNC Trucks
5. 5Bamboo Deck
6. 6Polymer Enclosure
7. 7Charging Port
8. 8Power Button
9. 9Indicator LED

Gear drive · NX remote

Gear-drive riders must select 'Belt Drive' as the motor/drive type on the NX remote. This applies to the VELAR 2.0 Gear Drive and the BLACK Carve 4 (BC4). Set Motor Type = Belt Drive and Motor Poles = 7 – the same as belt-drive boards – then enter the gear ratio (VELAR 2.0 Gear Drive 4.3 · BC4 Street 2.6 · BC4 AT 4.3) and your wheel size. There is no separate “Gear Drive” option.

DriveGear drive · ratio 2.6 Street / 4.3 ATOn the NX remote: select Belt Drive

Motors6475 170Kv

Wheels115 mm rubber / 200 mm ATSet the wheel size you actually ride on the remote

Deck · enclosureBamboo · polymer

TrucksTKP CNC

Max load150 kg / 330 lbsBC4 Street & AT

Measurements · official dimensions

Length117 cm / 46″

Deck length102 cm / 40″Wheelbase 100 cm / 40″

Deck width27 cm / 10.6″

Across the wheels37 cm / 14.5″

Drop-down1.4 cm / 0.55″

NX remote setup · BC4

1. Motor type: Belt Drive (gear-drive riders always select Belt Drive).

2. Wheel size: 115 mm (rubber) or 200 mm (AT).

3. Gear ratio: 2.6 (Street) or 4.3 (AT).

4. Motor poles: 7.

03 / 04CHALLENGER 2.0 Belt Drive · Street & AT

CHALLENGER 2.0 · Belt Drive · Street & All Terrain

The CHALLENGER 2.0 is belt drive. The first-generation CHALLENGER came in a Belt Drive and a Direct Drive version – see Legacy boards. Same deck and frame for Street and All Terrain – they differ in wheels, pulleys and height.

CHALLENGER 2.0 max load

The maximum load of the CHALLENGER 2.0 (Street and All Terrain) is 150 kg / 330 lbs. Only one rider at a time.

CHALLENGER 2.0 Street

Legend · CHALLENGER 2.0 Street

1. 1Belt-Drive Motors (5048 160Kv)
2. 2Belts & Pulleys (40T Kegel)
3. 3Wheels (100 mm Tarmax / 155 mm AT)
4. 4TKP CNC Trucks
5. 5Deck (Maple + Fiberglass)
6. 6Enclosure (ABS, IP65)
7. 7Kicktail
8. 8Charge Port & Power Button

CHALLENGER 2.0 All Terrain

Legend · CHALLENGER 2.0 All Terrain

1. 1Belt-Drive Motors (5048 160Kv)
2. 2Belts & Pulleys (60T AT)
3. 3155 mm HOTA AT Wheels
4. 4TKP CNC Trucks
5. 5Deck (Maple + Fiberglass)
6. 6Enclosure (ABS, IP65)
7. 7Kicktail
8. 8Charge Port & Power Button

Measurements · CHALLENGER 2.0

Length90 cm / 35.43″

Wheelbase69 cm / 27.1″Axle to axle

Deck width27 cm / 10.6″

Across the wheels36 cm / 14.1″

Concave2 cm / 0.7″

DriveBelt driveOn the NX remote: select Belt Drive, poles 7

Motors5048 160Kv

Pulleys · gear ratioMotor 14T · wheel 40T (Street) / 60T (AT)Gear ratio = wheel ÷ motor pulley: Street 2.9 (40/14) · AT 4.3 (60/14)

Deck · enclosureMaple + fiberglass · ABS (IP65)IP65 is not waterproof – do not ride in wet conditions.

TrucksTKP CNC

Max load150 kg / 330 lbs

04 / 04ZENO NEW Dual hub motors

A lightweight kicktail electric skateboard with stealthy hub motors and a 14S battery system, plus a swappable 99Wh travel battery for commuting or flights.

ZENO key specs

Top speed45km/h28 mph

Range · ECO17.6km11 mi13.2 km / 8 mi BRUTALE · 75 kg rider

Weight5.5kgno battery6.5 kg / 14 lb with 99Wh · 6.8 kg / 15 lb with 259Wh

Battery99Whor 259Wh, swappable14S1P · 99Wh IATA flight-safe

Blueprint

Legend · ZENO

1. 1Dual Hub Motors (rear)
2. 2Front Wheels (75 mm)
3. 3Trucks (TKP CNC)
4. 4Deck (Carbon Fiber)
5. 5Kicktail
6. 6Charge Port & Power Button (underside bay)

Length71.5 cm / 28.15″

Deck width24.5 cm / 9.65″

Wheelbase48 cm / 18.9″

Wheel to wheel28 cm / 11″Width across the wheels

Concave · wheels1 cm / 0.39″ UWheel diameter 75 mm / 2.95″

Measurements · official dimensions

Full specs

MotorsDual hub motors 65Kv75 mm diameter · brushless · 58.8V

ESCORION ESC – 14S 35A

Battery14S1P 99WhOptional 259Wh battery (swappable)

Range17.6 km / 11 mi ECO13.2 km / 8 mi BRUTALE · 75 kg rider

Top speed45 km/h / 28 mph

Weight5.5 kg / 12 lb (no battery)6.5 kg / 14 lb (99Wh) · 6.8 kg / 15 lb (259Wh)

DeckCarbon fiber, kicktailCNC'd cover and heatsink details · 1 cm / 0.39″ U concave

Wheels75 × 56 mm PU 76A

TrucksTKP CNC'd

BrakesRegenerative

Max load118 kg / 260 lbs

Water resistanceIP65IP65 is not waterproof – do not ride in wet conditions.

RemoteONSRA NX

Recharge~1 h with 2A charger2A 14S ZENO charger

Travel safe99Wh – IATA approved259Wh – not permitted for air travel

In the boxZENO, 2A charger, tools, remoteBoth battery-cover screw sets: 3 mm hex screws (fitted) + knurled thumb screws (tool-free)

WarrantyCNC parts: 4 years · Battery & ESC: 1 yearOther components: 2 years · same as all boards, see Warranty

ZENO max load

The maximum load of the ZENO is 118 kg / 260 lbs – the same as the BLACK Carve 3. VELAR, BC4 and CHALLENGER 2.0 are rated 150 kg / 330 lbs. Only one rider at a time.

Show ZENO spec sheet & photos

ZENO ride modes

Switch modes with the OPTION button on the ONSRA NX remote. Speed and brake strength per mode are adjusted in Menu: MODES.

Mode 01ECOIntentionally limited – ECO cannot be set to 100%.

Mode 02 · Rolling outCRUISE – push assistPush assist is rolling out – not an official feature yet.

Mode 03SPORTCan be set to full power.

Mode 04BRUTALEFull power – the board’s maximum speed, nothing more.

Push assist · Cruise

Push assist is rolling out – not an official feature yet.

25 km/h limit

The whole board can be limited to 25 km/h. Contact us at info@onsra.com if you need this.

Charging & turning on the ZENO

The charging port and the power button are both in the battery bay on the underside of the deck, next to the removable battery.

Charging portBattery bay, underside of the deckSmall round port with a rubber cap, next to the power button. Close the cap after charging.

Power button & status lightSame battery bayRound button with the ONSRA logo and a status light.

Charger · recharge time2A 14S ZENO charger · ~1 hIncluded in the box

IndicatorSolid redPlugged in and charging.

IndicatorGreenFully charged.

Turning on: push the power button in the battery bay to turn the ZENO ON/OFF. Everything else works as described in Powering on: hold the remote's power button for 2 seconds, once paired you can power the board on from the remote, it powers OFF automatically after 5 minutes of inactivity, and after 2 days unused you need to press the button on the board again.

See Charging for the safety rules: never charge when anything is wet, stay nearby, don't charge overnight, and only use the original charger.

Swapping the battery

1. Turn the board OFF and unplug the charger.

2. Turn the board upside down on a soft, clean surface.

3. Open the battery enclosure – option A: with a 3 mm hex (Allen) tool (factory-fitted hex screws, the cleaner look) · option B: tool-free with the included knurled thumb screws. Both screw sets come with the board.

4. Unplug the yellow XT60 connector that joins the battery to the board, then lift the battery out.

5. Put the other battery (99Wh or 259Wh) in, plug the yellow XT60 connector back in until it is fully seated, and close the enclosure. Do not overtighten the screws or use power tools.

6. Turn the board on and check the battery level on your ONSRA NX remote.

Option A · default3 mm hex screwsFitted at the factory. Flush, cleaner look – open with a 3 mm hex (Allen) tool.

Option B · no toolsKnurled thumb screwsSwap the hex screws for the included thumb screws to change batteries by hand, e.g. when travelling. Hand-tight only.

Flying with the ZENO

Flight-safe99WhIATA approvedCarry it on as carry-on

Not flight-safe259WhLeave it at homeNot permitted for air travel

• Fly with the 99Wh battery only (ZENO Flight Safe).
• Batteries are swappable with plug-and-play connectors, so you can switch to the 259Wh pack for long rides on the ground.
• Each battery sits in a reinforced fiberglass enclosure.
• Weight with the 99Wh battery: 6.5 kg / 14 lb.
• Carry the 99Wh battery as carry-on. Airline rules can differ, so please check your airline's battery policy before you fly.

Remote, pairing & everything else

Your ZENO ships with the ONSRA NX remote already paired and set up. If you get a new remote or the connection is lost, follow Pairing. On the NX select Motor Type = Belt Drive – that is correct for the ZENO even though it has hub motors.

Everything else in this manual applies to the ZENO too: Quick start, Safety, Charging, Home screen, Menu settings, Alerts, Battery care, Stance and the Warranty exclusions.

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Older ONSRA boards: the first-generation VELAR (Belt Drive and Gear Drive), the BLACK Carve 3, plus the BLACK Carve 2 and the first-generation CHALLENGER (each in a Belt Drive and a Direct Drive version). The Safety, Charging, Maintenance, Battery care and Warranty chapters apply to these boards too.

VELAR (1st gen) · Belt Drive & Gear Drive

Specs · VELAR (1st gen) · Belt Drive

Specs · VELAR (1st gen) · Gear Drive

BLACK Carve 3 · BC3 Pro

Specs · BLACK Carve 3 Pro · Direct Drive

BLACK Carve 2 · Belt Drive & Direct Drive

Charging the BLACK Carve 2

CHALLENGER (1st gen) · Belt Drive & Direct Drive

Charging the CHALLENGER (1st gen)

Specs · CHALLENGER 1.0 Street (Belt Drive)

Specs · CHALLENGER 1.0 AT (Belt Drive)

Legacy LCD remote

Pairing the remote with the board

1. Hold the board's power button until the LED starts blinking.

2. Hold the power button on the remote. The screen shows REMOTE PAIRING, then REMOTE PAIRED OK!

Direction, speed modes & cruise

• Direction: while the board is stopped, double-click the mode change button to switch between forward and reverse.
• Cruise mode: fully accelerate and click the power button once. To disable cruise mode, just brake.

Remote setup

Legacy remote alerts

• LOW TEMPERATURE – below 0 °C. Be cautious of slippery road conditions.
• BATTERY OVERHEAT (55 °C) – the board battery temperature is too high.
• ESC OVERHEAT (100 °C) – ESC temperature is too high. ESC OVERHEAT (120 °C) – stop riding! Cool it down before use.
• MOTOR OVERHEAT (100 °C) – motor temperature is too high. MOTOR OVERHEAT (120 °C) – stop riding! Cool it down before use.
• MOTOR BREAKDOWN – motor seizing or malfunction.
• HEAT PROTECTION WARNING – to protect the electric system from overheating, the board reduces its performance so it can cool down. Until it reaches a safe temperature you cannot change speed modes.
• HIGH VOLTAGE (51 V) – voltage is too high. HIGH VOLTAGE (51.8 V) – stop riding! Discharge it before use.
• LOW TEMPERATURE / HIGH TEMPERATURE (charging) – charge temperature too low / too high.
• DISCONNECTED – the remote is disconnected from the board.
• BATTERY / BMS ERROR – please check the battery communications port.

Charging the legacy remote

Stance (legacy boards)

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• Check each truck bushing screw
• Check the truck screws
• Check the enclosure screws
• Belt-drive boards: check belt tension (2 mm slack is good)
• Check the wheel nuts
• Check the wheels for wear (replace them if they look irregular)
• Check the board for cracks
• Check motors and belts for any damage (replace if they look damaged)

Show original manual page

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• The electric skateboard is not a toy, and should be treated with appropriate caution.
• Always practise safety first. It's possible to lose your balance and cause a collision or fall. Use the board in a safe, appropriate environment and always wear safety gear.
• You must wear a helmet at all times, plus all the relevant safety equipment when riding (elbow pads, knee pads, gloves and a strong pair of shoes).
• Check and obey your local laws on whether and where electric skateboards may be ridden. Always obey and check the local road rules in your area for where you can ride. Do not ride on busy roads with traffic and white markings. Always respect pedestrians!
• Wear closed-toe shoes – flip-flops or similar loose footwear are not suitable riding wear.
• Maximum load: 150 kg / 330 lbs for every VELAR (all versions), the BLACK Carve 4 and the CHALLENGER 2.0 (Street & AT); 118 kg / 260 lbs for the BLACK Carve 3, the BLACK Carve 2, the ZENO and the first-generation CHALLENGER. Exceeding this weight will compromise the structural integrity as well as balance, functionality and performance.
• Only one person can ride the skateboard at a time. More than one is extremely dangerous.
• 13+ The skateboard is designed for riders aged 13 and above; please use caution.
• DO NOT RIDE the board if you are under the influence of any drugs or alcohol.
• DO NOT RIDE the board in wet conditions – not only is it dangerous, the board is not waterproof and water can damage components like the motors, bearings and electronics. The IP65 rating of the ZENO and the CHALLENGER 2.0 enclosure is splash protection, not waterproof: riding in wet conditions is still not allowed – if you do, it is at your own risk and water damage is not covered by the warranty.
• Whenever you ride, you risk serious injury or even death from loss of control, collisions or falls. To ride safely, you must read all instructions, safety messages and warnings in this manual.
• Avoid riding on sand, gravel, mud, rugged or open ground. ONSRA boards are designed to be ridden on flat, paved surfaces. Use different wheels for different occasions.
• Do not ride on slippery ground, such as snow, ice or wet ground.
• Keep fingers, hair and clothing away from belts, motors, wheels and moving parts.
• Keep a safe distance from other people and stationary objects while riding. Do not ride in crowded spaces – you could be a danger to yourself and other people.
• Do not ride at night, in dark locations or in low visibility.
• Stop using the board when the battery is low!

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Battery charge indicator light

Charging the NX remote

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Once paired

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1. Press and hold the ON/OFF button of your ONSRA NX remote for 5 seconds.

2. Select 2WD and press ON/OFF to confirm.

3. The PAIRING screen appears.

4. Press and hold the power button of your electric skateboard for 5 seconds.

5. The PAIRED screen confirms that your remote is now paired.

Set up the parameters

1. Select KMH or MPH.

2. Select the motor type (Belt Drive or Direct Drive). Belt drive and gear drive (VELAR Gear Drive, BC4): select Belt Drive, motor poles 7.

3. Select the wheel diameter.

4. Belt Drive (incl. gear drive): enter the correct gear ratio – VELAR 2.0 belt 4.4, CHALLENGER 2.0 Street 2.9 / AT 4.3; gear drive: VELAR Gear Drive 4.3, BC4 Street 2.6 / AT 4.3 (see Gear ratio).

5. Motor poles: select 7 for Belt Drive, 10 for Direct Drive.

6. Your remote is now set up correctly.

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Standard speed mode values

Mode	Top speed	Accel.	Brake
ECO	20km/h	30%	40%
CRUISE Default	30km/h	50%	50%
SPORT	45km/h	70%	70%
BRUTALE	Board max	100%	100%

Auto reverse

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Menu: BOARD

Menu: AUTO REV

Menu: MODES

Menu: INFO

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What should I do if I have a problem with my board?

Common issues

Board won't power on

• Charge the board with its original charger and check the charger light (solid red = charging, green = full).
• Press the power button on the board itself – after 2 days unused the remote can't wake the board.
• ZENO: check that the yellow XT60 battery connector is fully seated and the battery cover is closed.
• Still nothing? Don't open the board – contact info@onsra.com.

Remote won't pair or keeps disconnecting

• Charge the remote – a low remote battery causes drop-outs.
• Turn board and remote off and on again.
• Re-pair: hold the remote's ON/OFF for 5 s, select 2WD, then hold the board's power button for 5 s – see Pairing and the reconnect video.
• After pairing, check motor type, poles, wheel size and gear ratio (belt and gear drive: Belt Drive, poles 7; gear drive ratio: VELAR Gear Drive 4.3, BC4 Street 2.6 / AT 4.3).

Battery not charging

• Make sure port, cable and outlet are dry and clean, and the plug is fully inserted.
• Try another wall outlet. Use only the original charger.
• No light on the charger, or it never turns green? Stop and contact support – don't use another charger.
• Let a very cold board warm up to room temperature before charging.

Less range in the cold

• Normal for lithium batteries: low temperatures reduce range, top speed and acceleration (see Battery care).
• Store and charge the board at room temperature; don't leave it in a cold (or hot) car.
• The remote shows a Low temperature alert below 0 °C – watch for slippery roads.

Braking feels weak or too strong

• Braking is regenerative. With a full battery (High voltage alert) the brakes are weaker – ride on flat ground first, then go downhill.
• Brake strength per mode is adjustable in Menu: MODES. SPORT and BRUTALE brake hard – be gentle with the thumb wheel.
• Practise braking in ECO; lean back when you brake (Stance).

Wrong speed or distance on the remote

• Check motor type, wheel size and gear ratio in Menu: BOARD.
• Belt and gear drive: Belt Drive, poles 7. Gear drive: VELAR Gear Drive 4.3, BC4 Street 2.6 / AT 4.3. Belt: VELAR 2.0 4.4, CHALLENGER 2.0 Street 2.9 / AT 4.3.

Board slows down on a steep hill

• Our electronics have current protection. If the board slows on a steep hill, the protection is active – consider stopping to avoid damaging the electronics.

NX remote alerts

Still stuck?

info@onsra.com →

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• Always clean your bearings for the smoothest ride. Dirty bearings hurt ride quality, which may reduce battery performance and cause bearing failure.
• Always check all screws and nuts on your skateboard / longboard.
• Swap the front wheels with the back wheels once the motor truck wheels are worn out. This way you can use the wheels a lot longer.
• Regularly clean & check the belt and drive gear area for any damage. Contact our support service if you have any questions or think something might be wrong.
• Always store your board at room temperature (see Battery care).
• Clean dust and dirt off your board so it looks and rides like new. Use a damp & dry cloth to clean.
• Keep your All Terrain tyres between 30–45 PSI when riding. At low pressure, the risk of a flat tyre is a lot higher.
• Before every ride, run the checklist in Read before riding.

Maintenance checklist

Show original manual page

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Show original manual page

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How to calculate the gear ratio

Gear drive (VELAR Gear Drive, BC4)

Cruise control

Tyre pressure for AT wheels

Show original manual page

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What is covered

What is NOT covered

• Wheels, bearings, bushings and grip tape are wear-and-tear items and are not covered.
• Damage caused by improper use, improper maintenance or improper storage.
• Any damage outside of normal use.
• Damage caused by unauthorised repairs or unauthorised parts – do not open the board without our agreement first.
• Damage or injury to the rider or other objects caused by the skateboard or its accessories.
• Normal battery degradation from use.
• Damage to the battery from incorrect charging or leaving it uncharged for a long time.
• Damage to electronics through strain on motors (for example continuous riding on very steep hills).
• Damage caused by exceeding the maximum load of your board, or by carrying more than one person.
• Damage caused by using third-party or non-original chargers or charging accessories not approved by ONSRA.
• Damage sustained during shipping or improper transport, unless done by ONSRA-approved carriers.
• Products used for rental or commercial purposes.
• Firmware tampering: altering or modifying the board's software or firmware voids the warranty.

Warranty conditions

• This warranty applies only to the original purchaser and is non-transferable.
• Warranty claims must be accompanied by a valid proof of purchase.

Abuse to the board is not covered

Water damage is not covered

Battery safety

• Do not open the battery. There is a risk of short circuit, and opening the battery voids the warranty.
• Protect the battery against mechanical damage, heat (for example prolonged exposure to sunlight), fire and immersion in water. There is a risk of explosion. In case of damage and improper use of the battery, vapours may emanate. Keep children away from the battery.
• Never charge the battery in a flammable environment. The charger and the board must be placed on a dry, non-flammable surface.
• Never charge or use a defective or damaged battery.
• Do not place any metal object into the charging port – this can cause a short circuit, make the battery non-chargeable and voids the warranty.
• Never send a battery by postal mail by yourself! A battery is classed as hazardous / dangerous goods and requires certification to send. Contact info@onsra.com first.
• Do not dispose of the battery in your household waste. Follow your local regulations for lithium-ion batteries.
• Failure to properly charge, store or use your battery voids the warranty and may cause a hazardous situation.

Registration

Support

info@onsra.com →

Returns

Safety & legal

Show original manual pages

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The VANDAL is ONSRA's electric bicycle (pedelec) – a BMX / dirt-jump style e-bike for everything from the skatepark to relaxed cruising through city streets, with a rear hub motor, a hidden main battery in the down tube plus a secondary battery, an LED display, a suspension fork, 4-piston hydraulic disc brakes and Maxxis 26″ tyres. It comes in two control versions: throttle + pedal assist and pedal assist only.

Intended use

• The VANDAL is designed for use on paved paths only. Never ride on stairs, jump, or perform wheelies or similar activities.
• Not approved for competitions. Commercial use is not part of the intended use.
• Observe the permitted overall weight of 130 kg / 286 lbs.
• No liability or warranty is accepted if the VANDAL is used outside its intended use, if safety instructions are not observed, in the event of overloading, assembly errors or missing care and maintenance. Any modification or alteration to the electrical system (tuning) voids all warranty claims.

In the box & tools

Assembly

1. Handlebar. Remove the handlebar clamp bolts with the 5 mm hex wrench, place the lower crossbar of the handlebar in the groove of the top crown, tighten loosely and adjust the angle. Then cross-tighten the clamp corner to corner, ½ turn at a time per screw, until the clamp sits evenly and the handlebar does not move. Failure to tighten the handlebar correctly can lead to improper installation and increases the risk of an accident.

   

2. Pedals. Fit them with the 15 mm wrench – “L” on the left crank, “R” on the right. The right pedal screws on clockwise, the left pedal counter-clockwise. A little bicycle grease on the threads is recommended.

   

3. Tyre inflation. Tyres are shipped partially inflated. Using a pump with a Schrader valve tip, inflate to max 65 psi (4.4 bar) to seat the tyre in the rim, then deflate to the recommended 40–55 psi (2.7–3.8 bar), depending on rider weight and terrain.

   

4. Charge the battery. The battery can be charged on or off the bike (two keys are supplied to lock and unlock it). Plug the charger (100–240 V) into the wall, connect it to the battery charging port and switch the battery on – it will not charge unless it is on. Charger LED red = charging, green = charged. Afterwards switch the battery off, remove the cable, put the protective cap back on the charging port and unplug the charger.

   

Assembly finished

Pre-ride safety check

1. Wheels: tyres free from punctures, cracks and deformations, tread in good condition; pressure 40–55 psi (2.7–3.8 bar); wheels true and properly dished.

2. Brakes: pull both levers – you should feel an obvious pressure point and the levers must not touch the handlebar. Push the bike forwards and backwards while pulling each lever to check each brake.

3. Cables: no loose cables, plugs properly connected, no strain on wiring near the fork when turning the handlebar left to right, and no wires or brake lines touching moving parts.

4. Display: check that it turns on and works properly.

Operating the bike

1. Turn on the battery.

2. Power on the display.

3. Throttle version: press + to set assistance between 1 and 5 – the throttle is now live, so proceed with care on a flat surface, as the bike moves forward when the throttle is pressed. Pedal-assist-only version: set assistance between 1 and 5, then start pedalling and the assist engages.

4. Braking: 4-piston hydraulic brakes – the RIGHT lever operates the REAR brake, the LEFT lever the FRONT brake. The right lever has a brake sensor that cuts power to the motor.

5. Turning off: first press the power button on the display, then switch off the battery.

VANDAL safety

• Like any sport, cycling involves risk of injury – by choosing to ride you assume that risk. All riders must read and understand this manual before first use.
• Always wear an approved bicycle helmet. A properly fitting ANSI or SNELL approved bicycle safety helmet (CE approved if you are in Europe) should be worn at all times when riding. Riding without a helmet may result in serious injury or death in an accident. Make sure the helmet covers your forehead.
• It is your responsibility to know and follow the e-bike laws where you ride. Obey the same road laws as other road vehicles, give way to pedestrians, stop at red lights and stop signs and use correct hand signals.
• Concentrate on the path ahead; avoid potholes, gravel, wet or oily roads, curbs, tracks and speed bumps. Walk your bike across train tracks. Expect the unexpected.
• No passengers or cargo that interfere with control. Never use your phone or headphones while riding. Secure loose trousers and avoid open-toe shoes.
• E-bikes are heavier and faster than normal bicycles – take extra care. Check the brake inhibitor switches (motor cut-off) before each ride.
• After any incident, consider the bike unsafe until it has been inspected; consult a professional cycle mechanic. Do not remove the front, rear or pedal reflectors – they are an integral part of your safety. Check the reflectors and their brackets regularly to make sure they are clean, straight, unbroken and securely mounted. After-market changes not approved by ONSRA may void the warranty.
• Wet weather: take extra care. The VANDAL is not meant for puddles, heavy rain or streams – never immerse it in water. Brake earlier and slow down.
• Night: riding at night is not recommended. If you must, use clean reflectors, a white front light, a red rear light and reflective clothing.
• Parents and guardians: you are responsible for your child's safety. The VANDAL is not designed for children under 16. Obey local regulations and always wear a helmet.

VANDAL maintenance

• Cleaning: dirt, salt and other elements damage the bike – clean it regularly and protect it against corrosion. Use clear water and a gentle soap if necessary. Do not spray water directly onto the VANDAL: wipe it down with a lightly damp cloth, then treat the surfaces with a care product and wipe with a clean, soft cloth. Never clean it with a strong water jet or a steam jet from a short distance – water can get past the seals into the bearings and electrical parts.
• Tyres: 26″ × 2.30″ Maxxis DTH with Schrader valves; ride at 40–55 psi (2.7–3.8 bar). Wheel nut torque 34 Nm (25 ft-lb). Check the tyres and rims before each use for wear, damage, cracks or deformation. Inflate from a regulated air source with a pressure gauge – an unregulated air source can over-inflate the tyre and make it burst. Replace tyres or tubes as soon as wear becomes obvious or a hole is found.
• Brakes: rear brake = right lever, front brake = left lever. Hydraulic brakes need maintenance of pads, rotors and brake lines (these can leak). Keep pads and discs free of grease and regularly check pad wear – have worn pads inspected or replaced, and adjust both pad clearances equally. After new pads or rotors, bed them in: accelerate to 25 km/h, brake to a near stop, repeat 8–10 times. Pad wear and lever reach can be adjusted with the 2 mm Allen key on the brake lever. Some discs are only compatible with resin pads – do not use metal pads on discs marked “Resin”. For more brake adjustment instructions, see the support section at www.onsra.com. The VANDAL brakes have a two-year warranty.
• Battery: recharge after each ride and never store it discharged. Storage −10 to 40 °C (best 18–23 °C), operation 4–30 °C; no long exposure to heat or direct sunlight. About 1,000 full cycles when new. Range drops in the cold – this is normal, not a defect.
• Range: depends on battery age, terrain and incline, rider weight and load, speed, outside temperature, wind, riding style, the amount of pedalling and the condition of the bike (tyre pressure, brakes, chain). In winter, plan shorter trips or pedal with a lower level of assistance.
• Tips for maximum range: charge the battery at 18.3–23.9 °C (65–75 °F). Lithium-ion batteries have no memory effect, so you do not need to discharge the battery completely. Keep the tyre pressure correct and lube the chain regularly. Riding at 4–30 °C (40–85 °F) significantly increases range.

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