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Welcome to Electric-Bikes.comBetterbikes: Electric Recumbent Bikes, Foldable Bikes, and Velomobiles |
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Most betterbikes use, or modify, off-the-shelf drive systems (e.g. Go-Hub or Electro Cycle E-4). They represent the state-of-the-art and can offer a no-pedaling speed of 20 mph for 20 miles. Other Betterbikes offer speeds up to 30+ mph and distances exceeding 100 miles. This increased range and speed (compared to conventional e-bikes) results from streamlining + extra batteries. Reclined seating reduces the wind drag which is by far the biggest hurdle to faster e-bike speeds.
On a regular upright bike pedaled at 20 mph, about 80% of the effort to maintain speed is spent overcoming wind drag, i.e. pushing air out of the way. This graph shows how much energy (watts) is needed to overcome wind resistance (major), rolling resistance (minor), and transmission losses (negligible) on a standard bike (Source: Bicycle Physics Calculator ):
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Betterbikes are better because they're safer, more comfortable, and longer-ranged than conventional upright e-bikes. Increased safety comes from being closer to the ground (hurts less when you fall) and having your feet in front (no head-first crashes). The bigger battery load increases possibilities in both range and speed. Combining higher speeds with lounge-chair comfort enables most folks to cover twice the range they would go on a conventional e-bike.
Riding a Recumbent
For example, Joe Couch Potato will find that, even with an electric assist, a ride on a standard bike is only comfortable for about 40 minutes. That should take him ten to twelve miles. An electrified recumbent can cover the same distance in 30-33 minutes (21 - 23 mph). That's a factor 1.3 - 1.4 improvement in average speed. When you put Joe in the lounge-chair comfort of a betterbike, you'll find that an hour's ride is practical for Joe in terms of comfort, time, and range. That increase in ride length from 40 to 60 minutes (factor 1.5) combined with the increase in speed (factor 1.3+) yields a doubling of range.
When starting off, a long wheelbase recumbent (like the EZ-1) feels wobbly. At operating speeds (5+ mph), it feels like a standard bike. The motor's low speed helps a lot to make starts smoother and more graceful. Pedaling helps too. Stability increases with speed. It all gets easier with practice. That long wheelbase makes it very stable at higher speeds.
When looking for an e-bike, too many people concentrate on the motor, when the bike is far more important. After all it's the bike on which you sit. The bike's comfort, handling and riding characteristics determine whether or not your e-bike is a pleasure or a pain.