Zehus Bike+

The offer

What Zehus Bike+ actually is

Zehus Bike+ is one configuration from Zehus, made in Italy, filed here as a all-in-one wheel. The family is Bike+, generation Catalogue. Italian all-in-one rear wheel. Motor, battery and electronics live inside the hub. 250 W, about 173 Wh. No downtube pack.

In the box, as this record has it: All-in-one rear wheel, In-hub battery, Charger. Still required before the bike moves under its own assist: 135 mm quick-release frame, Spoke and brake match. A cheaper advert for the same family name is not this list. If the battery, the charger or the throttle differs, it is a different configuration and it gets a different page.

250 W class. List price was not confirmed in the source used.

The price on the card is the maker’s published figure in EUR, or Maker list when no figure was published. Allowances for a missing pack, a charger and workshop time sit in the complete-cost band. They are not a second product and they are not a promise that a random pack will talk to this controller.

The bicycle

The frame this motor is asking for

Zehus lists Zehus Bike+ against Hybrid, Road, Folding bicycles, for Commuting, Leisure. Wheel sizes on the card: 700c, 26. The mechanical interface is 135 mm quick release. Brakes are disc.

A rear hub has to share the dropouts with the gears and the brake. 135 mm quick release is not 142 mm thru-axle, and an adapter is a different configuration. The derailleur hanger, the rotor and the torque arm all want the same few centimetres. Internal-gear hubs are a separate build, not a checkbox on a cassette wheel.

Pedals stay. This configuration is a bicycle with assistance, not a motorcycle conversion. Sensor on the card: cadence. Cut-off on the card: 15.5 mph. Throttle: not fitted.

The numbers

250 W is not the whole story

Continuous rated power for Zehus Bike+ is 250 W. Claimed peak is not stated separately from the continuous rating. Torque is not published as a crank or hub figure. Manufacturer stated. Motor mass is not published. System mass, once the named parts are on the bike, is All-in-one rear wheel, In-hub battery, Charger.

Peak is a short claim. Street rules, including the Great Britain check on this site, use continuous rated power and the speed at which assistance stops. A controller that can be unlocked does not change the record of the motor as sold. Zehus Bike+ is filed in the 25 km/h class: 250 W pedelec class used across the EU, Great Britain and Australia.

In this class the useful comparison is torque and mass, not a bigger watt sticker. A 250 W torque-sensing mid-drive and a 250 W cadence hub do not feel alike, and neither of them becomes legal somewhere else just because the sticker matches.

Pack and charger

The pack is part of the kit

In-hub pack is 173 Wh at 36 V. Lithium-ion The charger is Included charger.

Nominal watt-hours are voltage times amp-hours when both are known. That is stored energy on the label, not usable energy, and not a mileage promise. Cold, load, hills and how full you dare to run the pack all move the distance. Any range sketch on this page shows the watt-hours per kilometre it assumed.

Charge this pack with the charger named for it. The same plug on a higher-voltage brick is the wrong part. A swollen, hot, hissing or sharp-smelling pack is a stop: do not open it and do not keep charging it.

All-in-one wheel

How Zehus uses this layout

All-in-one wheel. Motor, battery and the electronics live in the wheel. Zehus Bike+ does not ask for a downtube bottle cage or a rack pack. The whole system is the hub, which is why the watt-hours are modest: 173 Wh.

Range follows that small store. It is a town wheel, not a touring battery you swap at lunch. Weight sits in the wheel, so the bike can feel calm in a straight line and heavier to flick.

Service is the wheel, not a separate pack you post back. When the generation is discontinued, the record stays so a fitted wheel can still be identified. A new pack from another brand is not a refill.

The workshop

A workshop path, written as a sequence

Zehus Bike+ is a workshop install in this record. Doing it yourself does not rewrite the path into a pass. It means the documented route was not the one you took, and the result stays conditional until someone competent has seen the bike.

Warranty as published: Maker warranty. Term is on the invoice.. Labour in the cost band is separate from the offer. A brake service the bike already needed, a new chain, or a hanger alignment is not folded into Zehus’s price to make the total look neat.

The sensible order is measure, then mount, then connect, then the first assisted roll in the stand. Connectors are keyed for a reason. The torque arm, the axle nuts and the connector boots are one inspection at the end, not three trips.

After it is on

The first month, and the parts that wear

Spoke tension on a motor wheel is part of the service, especially in the first few hundred kilometres while the wheel beds in. A ticking torque arm is a loose bolt, not a personality. Check axle nuts after the first week.

Keep Included charger with In-hub pack. Store the pack cool, part-charged if it will sit, and not in a hallway that is your only exit. Zehus’s display, if one is included, is paired to this controller generation. A screen from the next family is not a spare.

My Garage on this device can hold the configuration, who fitted it, and what was still open. That note is for you and for the next workshop. It is not a certificate. If a later notice lands on this configuration, the record is where it should show.

Read next to it

• Copenhagen WheelSuperpedestrian · All-in-one wheel · 20 mph
• BionX D-seriesBionX · All-in-one wheel · 25 km/h
• GeoOrbital WheelGeoOrbital · All-in-one wheel · 20 mph

From the library

• What a conversion kit actually includesA motor wheel and a complete system are not the same product. The page should say which one you are looking at.
• Watts, torque, and the sticker that does not mean rangeContinuous watts, peak watts and newton-metres describe different moments. Mixing them is how a listing looks twice as strong as the motor you will live with.
• Speed classes, from 25 km/h to off-roadThe class is a property of the kit as sold. The road you may use it on is a property of the country, and sometimes of the state or the canton.
• Torque arms, dropouts and why the skewer is not the planA hub motor tries to rotate its axle in the frame. The torque arm is how that force goes into steel instead of into a nut.
• Wheel sizes, and why 700c is not a moodThe motor wheel is built for a diameter and a brake. The tyre you like does not retcon the rim.
• All-in-one wheelsMotor, cells and controller in the hub. No bottle-cage battery. Also no touring tank.