dbRevO wheel converts regular bikes to electric
dbRevO wheel converts regular bikes to electric dbRevO wheel converts regular bikes to electric
mar 05, 2012

dbRevO wheel converts regular bikes to electric

dbRevO wheel converts regular bikes to electric




produced by taiwanese bike manufacturers DK city, the ‘db revO‘ wheel converts an ordinary bicycle to an electric bike simply by replacing the front wheel. the device integrates motor, battery, and controller into a wheel produced in a variety of colours. a small wireless console mountable on the handlebars controls the power and offers information about the ride.


produced in 20-inch and 26-inch models, ‘db revO’ fits a range of bicycles, featuring a 24V lithium battery and DC motor. current colour options planned for production include white, red, magenta, orange, yellow, green, blue, and gray.


video demo of the bike, including a demonstration of installation (comprising solely wheel replacement)




‘db revO’ was on exhibition at the EICMA bike and motorcycle show 2011, and is now among the shortlisted entries in the TAIPEI CYCLE d&i awards, organized as part of the prestigious iF design awards and part of the TAIPEI CYCLE bicycle show on now in taipei. keep posted to designboom for news about the winners of the award, to be officially announced later this week!

view of ‘db revO’ installed


full view of the wheel, which includes the motor and battery


closer view of the wireless console

  • Hélas… Inutilisable en France ou la législation n’accepte que la notion “d’assistance électrique”, donc avec un fonctionnement asservi à une action sur les pédales. Sinon, il s’agit d’un cyclo-moteur (donc casque obligatoire, non accès aux pistes cyclables, assurance…)

    JMB says:
  • @ JMB Who cares about France???

    mscx says:
  • I care …
    Maybe JMB comment would have been stronger and more effective in English…

    Bull says:
  • JMB in english version..

    Unfortunately… It can’t be used in France as the legislation only authorizes the electrical assistance as a function which needs to be applied via the pedals. Otherwise it is called a cyclo-moteur (pretty much like the famous french Solex, or Italian Piaggio Ciao..) and you then need a helmet, private insurance, non-access to bicycle paths…

    Basti says:
  • do not underestimate designboom\’s French reader base…

    too bad indeed especially in Paris where we desperately need more attractive cycling options…

    r e m says:
  • does anybody know about the weight of one of these?

    LUCKYLUKE says:
  • How do you lock the front wheel?.. otherwise it can\’t really be use in the city.

    hM says:
  • How about the negative steering offset ? Doesn’t that induce forces that pull you out of the center, i.e. instable condition? Especially if you might loose your grip for a moment?
    It should by like rolling backwards with any bike: the handle bar and wheel could turn around instantly. But maybe I’m wrong?
    BTW: same regulations as JMB mentioned in Germany, unfortunately.
    You need to transfer this into the back and implement a sensor that looks for chain movement (like ABS-sensors) and let this speed signal control the power. Then it might legally slip through as an ebike (or pedelec).
    Would steering make easier because less weight of the front wheel and it could be lifted easier over obstacles.

    Dirk16 says:
  • converts you from trim to fat.

    lazy says:
  • ROC trash –

    jorge from Brazil says:
  • In Spain the law also requires that the electric motor works as an assistant to the pedal. It would therefore be necessary to add the Channel Install a motion detector pedal to activate the motor.

    oxe says:
  • the problem with europe is that there are too many stupid laws,
    who cares about europe anymore?

    lee says:
  • Pues envienla a Peru que aqui seria un boom para los miles de ciclistas que deseen trasladarse en Lima capital.

    vquinones says:
  • Nice concept…
    As for the France issue: in Italy it’s exactly the same, and also in some other european countries I guess…

    ollen says:

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