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Please use the form on the right to contact us, or call 202 794 6620. We are happy to answer any question about electric bikes that we can. 

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ElectriCityBikes Team

 

4810 Wisconsin Avenue Northwest
Washington, DC 20016
United States

202-794-6620

We have carefully curated the most reliable and innovative models of electric bikes from the top brands - Specialized, Kalkhoff, Focus, Raleigh. Come in today to browse and a free test ride - try before you buy! Our head tech has over 5 years experience in all brands and types of e-bikes and kits. Electricity Bikes was founded by City Bikes, pioneers of the urban transportation bike shop in DC since 1988.  

External Derailleur Gears

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External Derailleur Gears

Charlie McCormick

 Traditional Derailleur external gears are the norm for most bikes. Pictured is a double chainring setup - most eBikes use a single chainring because the motor means less gear range is needed. 

Traditional Derailleur external gears are the norm for most bikes. Pictured is a double chainring setup - most eBikes use a single chainring because the motor means less gear range is needed. 

The the most common gear style, advantages include a great gear ratio range, with lots of low speed torque as well as top end gears for high speeds. They also are easily accessed to service, and changing flats on mid drive bikes with derailleurs is pretty straightforward compared to internal gears. There is universal support at almost any bike shop. Disadvantages: for eBikes shifting over the entire range when the bike is at rest can be a problem - since less active cyclists can forget to down shift when coming to a stop . Wear is going to be higher than internal gears, especially on an ebike when frequently riding is wet dirty conditions. Full chain guards cannot be used so dirt and grease can get on your trousers. 
Gear ratios (the difference between the highest gear and the lowest one) is usually 300-400%.