Shimano unveil new STEPS electric bike components

By BikeRadar | Friday, Jun 18, 2010 2.00pm

Shimano have unveiled a new component group for electric bikes called STEPS – Shimano Total Electric Power System.

It's designed to give e-bikes the feel and handling of a 'normal' bike, combining user-friendliness with a clean design.

The group includes a 250W electric motor that will help get you up to speed but cuts out at 15.5mph (25km/h), with a regenerative braking function that charges the battery as you ride downhill.

As well as prolonging battery life, this E-Gain system, which kicks in as soon as you touch the brake lever, also improves braking power – think of engine-braking with a car.

STEPS equipment can be used with an eight-speed hub gear operated via electronic shift buttons (Shimano SG-E500), a Nexus hub gear or standard rear derailleur. V-brake and roller brake options will be available.

The 24V/4.0Ah lithium-ion battery is designed to be mounted on a rear rack, and includes an integrated rear light. A full charge is said to take just one hour, and it can be recharged over 3.000 times – so even if you use it every day it should last over eight years.

Shimano steps: rack-mounted battery and rear light: shimano steps: rack-mounted battery and rear light

Buttons on top of the brake levers allow you to switch riding modes and operate the lights (as well as the integrated rear light, the system includes a 6V/2.4W LED front lamp, which looks like it has a fork crown mounting).

A bar-mounted STEPS computer gives you an overview of e-bike functions such as riding mode and battery power, along with a gear indicator, speedometer and odometer. All the cables are designed to be internally routed.

At this stage, that's all we know, but STEPS is due to be launched at the Eurobike trade show in September and hit the market in December.

Shimano steps: front hub motor: shimano steps: front hub motor

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User Comments

There are 4 comments on this post

Showing 1 - 4 of 4 comments

  • A 24 volt 4 AH system would be a lightweight solution for my customers in Virginia who only need a range of 5 to 15 miles to over flat terrain.

    I would like to see a ultralight weight system at 36 or even 48 volt for police or other patrol use. You ride it around all day as a regular bike but have the ability to respond at 20+ mile an hour for a couple of miles and arrive unwinded.

  • you need to have a word with Mr Cancellara, fella. He will get you one.

    ps - I dont really believe it

  • I really can't wait to try it and see if it's better than BionX! I can't imagine the big blue S coming up short on this one!

  • A max speed of 15.5mph is disappointing. I believe that for most bikes it's 20mph - which is more reasonable (it's about what a newb like myself can do on a decent road bike with some riding, but no serious training).

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