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At just 33 lbs., the Diodra S3 is one of the lightest e-bikes on the planet.
We can’t say we are aware of what the previous lightest bamboo e-bike’s weight was, or even what that bamboo e-bike was, but at 33 lbs. (15kg), we don’t need to make much of an effort to concede Diodra’s claim about the S3. A 33-lb. e-bike is light by any standard, bamboo or otherwise.
The frame isn’t 100 percent bamboo, but we think that doesn’t disqualify them from the claim. The laminated bamboo is bonded to an aluminum head tube and seat tube, which makes sense considering that the headset and bottom bracket bearings need a precision fit in order to work correctly.
Diodra says that the bamboo is weatherproofed with a two-component coating as well as three layers of varnish. The company touts the bamboo’s vibration-damping qualities, which, when combined with aluminum inserts, does dampen nearly all vibration.
The website is short on details, but we know this much: It features a 250W motor that will be limited to 25kph in Europe (15 mph) but will offer a Class 1 top speed of 20 mph here in the U.S. They estimate a range of 63 mi. (100km) with its 300Wh battery and if you’re wondering why you don’t see a battery, that’s because it is contained within the hub along with the motor.
It also features a Gates belt option instead of a chain, and employs a single-speed drivetrain, which is part of how it achieved such a low weight. Rather than a cadence sensor, it includes a torque sensor, which will make for a more natural and dynamic riding experience.
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The Diodra S3 is a very attractive design and it uses bamboo in an innovative way. This isn’t an e-bike that you would want to store outside, though, despite how well the wood is protected.
Diodra believes in their design to the tune of a five-year warranty on the frame, plus a two-year warranty on everything else.
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