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With the help of this calculator you can get a rough estimate of the maximum achievable speed for a given power or the necessary power to achieve a desired speed. An upright posture on an uncovered bicycle is assumed.
The rolling resistance is independent of the speed. However, air resistance increases quadratically and plays a decisive role alongside the total weight in the plane. That is why high speeds of e.g. 50 km/h on flat roads can only be achieved with several hundred watts. However, a pedelec delivers a permanent maximum of 250 W. Everything above this has to be done by the cyclist by muscle power alone. Realistic power values over a period of one hour for average persons are below 200 W. The red line in the diagram indicates the maximum continuous power for pedelecs.

Parameter Decimal separator: comma or period in mm, cm, or m in kg in kg in %, negative value for descent in min-1 (crank revolutions per minute) in km/h, negative value for tailwind
in W (watt)
in km/h
"Normal"-Räder Rennräder Liegeräder
Hollandrad Obenlenker-
mit Untenlenker
mit Untenlenker
mit Rennlenkern
Info dazu...
Triathlon Kurzliegerad
mit Obenlenker

mit Obenlenker
Kreuzotter race

Kreuzotter race

Tieflieger vollverschalt
White Hawk
3 Räder, Kurbeln
mit Kettenschaltung

Velomobil verschalt
Reifen "wechseln"?
Berechnung geht von 20-Zoll-Vorderrad aus.)
Vorderrad-Reifen Hinterrad-Reifen
Luft-Temperatur ° C
Höhe über NN m
Windgeschwindigkeit km/h
Weitere Ergebnisse: Effektive Stirnfläche Cd*A m2; Rollwiderstandsbeiwert Cr 

This calculator is based on the online calculator "Geschwindigkeit&Leistung" on by Walter Zorn under the LGPL-Lizenz.


Unfortunately, firmware updates/upgrades are at the same time also a gateway for their unwanted features, which take away the choice of tuning or limit it.

We therefore recommend our customers not to carry out any upgrades/updates of the motor firmware or have them carried out at present in order to retain the option of selecting the tuning/original state. This applies in particular in connection with workshop work on your e-bike.


  • The badassBox is not to be used in normal road traffic or in areas regulated by the Road Traffic Act!
  • Use is only permitted on private property or for example for competition or test purposes.
  • Mounting the badassBox may lead to a loss of the bicycle warranty.
  • Use of the badassBox is entirely at your own risk and danger.
  • The manufacturer accepts no liability for damage to property and/or persons arising from inappropriate use of the products.
Article   Quantity Unit Cost
Australia New Zealand

For deliveries to Australia or New Zealand please order from our official distributor

eMTB Parts & Accessories
Palm Cove, 4879, QLD, Australia

Selon l'article L317-5 du Code de la Route du 24 décembre 2019, la vente de objet de dépasser les limites réglementaires fixées en matière de vitesse d'un cyclomoteur, d'une motocyclette, d'un engin de déplacement personnel à moteur, d'un quadricycle à moteur ou d'un cycle à pédalage assisté (vélo à assistance électrique/VAE) est interdite en France.
C'est donc avec grand regret que nous nous voyons contraints, avec effet immédiat de ne plus envoyer en France et dans les territoires d'outre-mer français.

— Votre équipe de Badass eBikes