惯性聚合 高效追踪和阅读你感兴趣的博客、新闻、科技资讯
阅读原文 在惯性聚合中打开

推荐订阅源

SecWiki News
SecWiki News
I
InfoQ
The Cloudflare Blog
人人都是产品经理
人人都是产品经理
博客园 - Franky
T
Tailwind CSS Blog
让小产品的独立变现更简单 - ezindie.com
让小产品的独立变现更简单 - ezindie.com
量子位
博客园_首页
罗磊的独立博客
V
V2EX
李成银的技术随笔
大猫的无限游戏
大猫的无限游戏
钛媒体:引领未来商业与生活新知
钛媒体:引领未来商业与生活新知
T
True Tiger Recordings
Vercel News
Vercel News
Cyberwarzone
Cyberwarzone
Cisco Talos Blog
Cisco Talos Blog
F
Fox-IT International blog
D
Darknet – Hacking Tools, Hacker News & Cyber Security
M
Microsoft Research Blog - Microsoft Research
Know Your Adversary
Know Your Adversary
爱范儿
爱范儿
The Register - Security
The Register - Security
G
Google Developers Blog
The Hacker News
The Hacker News
Malwarebytes
Malwarebytes
S
Securelist
博客园 - 三生石上(FineUI控件)
Jina AI
Jina AI
T
Threat Research - Cisco Blogs
T
The Exploit Database - CXSecurity.com
S
SegmentFault 最新的问题
博客园 - 叶小钗
F
Fortinet All Blogs
Apple Machine Learning Research
Apple Machine Learning Research
宝玉的分享
宝玉的分享
博客园 - 聂微东
T
Threatpost
博客园 - 【当耐特】
D
Docker
P
Privacy & Cybersecurity Law Blog
www.infosecurity-magazine.com
www.infosecurity-magazine.com
G
GRAHAM CLULEY
V
Visual Studio Blog
C
Cisco Blogs
IT之家
IT之家
S
Security Archives - TechRepublic
Latest news
Latest news
阮一峰的网络日志
阮一峰的网络日志

Ars Technica - All content

Citing Gandalf, Pope Leo says we must "disarm" AI US's big bet on quantum computing may not be entirely legal The Witcher 3 is a good game, but that doesn't mean you have to like it Whatever the mirror test tells us, beluga whales pass it SpaceX's Starship V3—still a work in progress—mostly successful on first flight Two space shuttle-era spacewalkers enter Astronaut Hall of Fame China’s shark finning could lead to US seafood sanctions Four Russian satellites are now within striking distance of an ICEYE radarsat Ebola outbreak now third largest recorded and "spreading rapidly" First-generation Chromecast users stressed by devices suddenly failing Trump FCC asks public to comment on whether ABC's The View is a news show AI users re-create dead pilots’ voices from crash investigation docs The Boys is dead. Long live Vought Rising. Police boast of hacking VPN where criminals "believed themselves to be safe" Review: The Mandalorian and Grogu is average Star Wars—no more, no less Texas AG sues Meta over claims that WhatsApp doesn't provide end-to-end encryption Before it comes down, what should be saved from the International Space Station? Marketer that claimed it could tap devices for ad targeting will pay $880K settlement Soaring solar and a surge in hydro push more coal off the US grid Trump abruptly cancels EO signing event after top AI firm CEOs declined to go PSA: The Steam Controller’s magnetic charger can be a fire hazard To achieve major goals, NASA seeks to streamline its organization AI put "synthetic quotes" in his book. But this author wants to keep using it. Doctors outraged after RFK Jr. fires leaders of key preventive medicine panel Rocket Report: Starship launch delayed, German launch company may aid Canada The $58,000 TV bill: When DirecTV sued O.J. Simpson for piracy A hacker group is poisoning open source code at an unprecedented scale Ground system issue scrubs first launch of SpaceX's Starship V3 rocket IoT gadget maker AcuRite shares reasoning for killing customers’ favorite app As Grok flounders, SpaceX bets future on beating Big Tech at AI AT&T sues California in attempt to shut off old phone network JWST maps the weather on a hot gas giant 700 light-years away Zillow loses access to thousands of home listings amid bitter legal feud Top Gun turns 40 Uh-oh, the International Space Station is leaking again US government takes $2 billion equity stake in nine quantum computing firms Plug-in hybrids get plugged in more than you might think These clever active beam headlights are finally coming to America Famously secret about its finances, SpaceX opens its books for the first time Trump admin didn't want Ebola-exposed Americans, sent them to Berlin, Prague NASA's Psyche spacecraft returns unfamiliar views of a familiar world Masters of the Universe final trailer brings the '80s nostalgia Leaving the V8 in the past: The all-electric Mercedes-AMG GT 4-Door AMD reportedly plans Ryzen 5800X3D re-release for upgraders on a budget Google publishes exploit code threatening millions of Chromium users Trump wants $1B to protect White House ballroom from drones and other threats Hulu set to keep existing as standalone streaming service and app (for now) Chickens without eggs? De-extinction company creates artificial egg. Minnesota prohibits prediction markets, promptly gets sued by Trump admin Buckle up: Google is set to remake search with agentic AI in 2026 Man wins $835K after sheriff jailed him for a month over Charlie Kirk post Russia's plan to advertise on rockets and spacecraft takes off Yearslong fight over users' right to tweak smart TV software heads to trial China banned RTX 5090D V2 while Nvidia CEO Jensen Huang was visiting The Internet can't stop watching Figure AI's humanoid robots handling packages Moose-proof and megacasting: Ars drives the new Volvo EX60 FBI seeks US-wide access to license plate cameras, wants "data in near real time" Spider-Noir's final trailer leans into the deadpan humor "I'll buy 10 of those"—NASA science chief yearns for mass-produced satellites Plex's 200% Lifetime Pass price hike tries forcing users to another subscription Two AI-based science assistants succeed with drug-retargeting tasks Google's SynthID AI watermarking tech is being adopted by OpenAI, Nvidia, and more In stunning display of stupid, secret CISA credentials found in public GitHub repo RFK Jr. forced to withdraw charter that opened CDC panel to anti-vaccine quacks Google announces agent-optimized Gemini 3.5 Flash and a do-anything model called Omni The era of 1,000 Hz gaming monitors has arrived, but why? Bipartisan bill in Congress includes $130 annual EV registration fee Civilization VII finally lets you build a civ that stands the test of time Electrical utility megamerger is all about the data centers In addition to space stations, Vast says it will now build high-power satellites Iran demands Big Tech pay fees for undersea Internet cables in Strait of Hormuz Ebola outbreak: WHO declares emergency, US restricts travel, American infected Legal fail: Don’t use AI to sue Facebook users for calling you a bad date One Mars spacecraft, two Senators, and a cloud of questions 1,000-year-old burial reveals close bonds between people and dingoes Elon Musk loses trial accusing Sam Altman, OpenAI of stealing a charity Pompeii victim ID'd as a likely doctor New Lanterns teaser brings back the superhero vibes The Dory Sign is E ink, smart screen simplicity at its finest Five years later, Windows 11 brings back much-missed taskbar options (and more) BMW sends off the 6th-gen M3 CS with a manual gearbox, rear-wheel drive Did Artemis II break through? Registrations at Space Camp double afterward. Bug bounty businesses bombarded with AI slop The US space enterprise is desperately waiting for Starship—will it finally deliver? A revolutionary cancer treatment could transform autoimmune disease The US is betting on AI to catch insider trading in prediction markets Russia pressures university students to become wartime drone pilots Authors fight for higher payouts from Anthropic’s $1.5B copyright settlement US hantavirus case was false positive; outbreak cases drop from 11 to 10 Review: Chaotically uneven Good Omens finale still conjures up old magic Solar power production undercut by coal pollution Weather-monitoring firm hangs dark cloud over customers’ heads by forcing new app Three's a party: US, China, and now Russia are on the prowl in GEO Ebola outbreak confirmed in Congo and Uganda; 246 suspected cases, 65 deaths Preprint server arXiv will ban submitters of AI-generated hallucinations OpenAI feels “burned” by Apple’s crappy ChatGPT integration, insiders say How the other half lives: VW shows off electric Polo GTI for Europe Making cement from a different type of rock could clean up emissions Bill to keep online games playable clears key hurdle in California Honda shows off new hybrids for America as it absorbs $9 billion EV loss
First look: Also's upcoming e-bike disconnects the pedals and wheels
John Timmer · 2026-04-17 · via Ars Technica - All content

Not an Also-ran?

The company bets that software can create a distinct—and better—riding experience.

Credit: Also

E-bikes have started to blur what was once a basic feature of cycling: you push the pedals, which turns the wheels. Now, with throttles, you only have to pedal some of the time. And in mid-drive motors, the force you generate through pedaling is routed through a complex set of gearing and is merged with a motor’s output. The once-direct connection between your legs and the rear wheel has become much less straightforward.

An electric bicycle startup called Also wants to obliterate that connection entirely. When you pedal its bike, you’re turning a generator. The power you produce, perhaps with additional juice from a battery, is sent to a motor, which turns the wheels. How much this feels like a normal bicycle is determined entirely by software, which controls crank resistance and converts the force you’re generating into motor power.

Also says its software will convince you that you’re just pedaling a regular old bike most of the time. And when it doesn’t feel like that, it’s because the software can provide a better experience.

Some of the key features of the TM-B: A rear suspension (vertical cylinder at left) and belt drive, a swappable seat and support (upper left), and a central generator/motor/battery pack.

Credit: Also

Some of the key features of the TM-B: A rear suspension (vertical cylinder at left) and belt drive, a swappable seat and support (upper left), and a central generator/motor/battery pack. Credit: Also

Ars took a brief ride on a pre-production version of the company’s first bicycle and spoke with the team preparing it for release. There’s more to test in a full review, but we can safely say that Also appears to deliver on its promise. Most of the time, it feels like a normal bike, but push it harder, and it shifts into something radically different. That difference feels like an improvement.

Building a new kind of bicycle

Also is headquartered down the street from Rivian, the electric car company that helped launch it. It’s a building filled with the partial carcasses of the bike the company will be launching, the TM-B, so there is no mistaking it for a car company. Saul Leiken, the company’s director of product line, told me there is some cross-pollination—for example, the bike’s battery uses the same cells as a Rivian’s, just at a lower density. But the biggest overlap appears to be conceptual.

Chris Yu, Also’s president, said the idea took shape during conversations with people at Rivian. In an electric vehicle, he noted, software ultimately determines the vehicle’s behavior, as it sits between the driver’s inputs and the hardware that carries them out. Also was founded on the premise that other forms of transportation could benefit from the same approach.

Leiken said the biggest challenge was avoiding an uncanny valley effect: Riders come in with an ingrained sense of how riding a bike should feel, and straying too far from that might feel unnatural. At the same time, the promise of an electric bike is that it can enable rides that might otherwise be difficult or impossible for average people.

To find a balance, Also is making the whole widget (a philosophy it shares with Rivian). Its central motor assembly is housed in cast magnesium that plays a key structural role; both the generator and motor within it are custom-designed for the TM-B (Leiken said many e-bike motors are repurposed power steering units). The battery also sits within this square assembly. A handful of standard parts, like the shocks and belt, are contracted out to regular cycling manufacturers, but much of what makes the TM-B distinct is done in-house.

Three images of the same bike, each with a different seat.

The seat assembly can be swapped out, providing a bit of flexibility to the bike.

Credit: Also

The seat assembly can be swapped out, providing a bit of flexibility to the bike. Credit: Also

Another distinction is its saddle and seatpost, which form a unit that plugs into a corner of the square motor/battery assembly. Also offers several options here—bench seating, a seat plus a cargo rack, or a sporty saddle—each built into a seating unit that power-locks into place, no tools required. Electronics in the seat enable user presets, letting a single bike body serve as two distinct setups. Switch between them in less than a minute by popping out one seat and inserting the other.

There’s also plenty of more conventional hardware, like lights and front fork shocks. Other features land somewhere in the middle, including a high-pivot rear suspension for cushioning against potholes and handling light trail use, as well as turn signals. The result is a bike that looks unusual but feels like a cohesive design.

That sense of cohesion likely comes from extensive prototyping. Also has a “museum” that includes the first test units, including one with a frame that let engineers vary the geometry to test different configurations (Leiken said the company ended up with something similar to a trail bike). The shop is full of in-house production tools like lathes and 3D printers, alongside automated endurance-testing machines. We saw hardware that can turn cranks with ankle-like motion or repeatedly run the wheels over a model of rough pavement.

Ultimately, the TM-B will be built in Taiwan, but it will be built using Also-owned machinery by Also-trained staff.

The software

There are two key aspects to an e-bike’s software, both central to the riding experience: the user interface and the motor control software. The former is what exposes the technology to the user, and Also has made its own. It’s a lot to take in at first, with multiple screens covering everything from basic ride stats to music from a paired smartphone. Options on each screen can be navigated through a mix of screen rotation, touch input, and handlebar-mounted buttons.

Overall, the UI was too much to take in during my short time with the bike. That’s not the screen’s fault; it was bright enough to be visible through sunglasses on a very sunny day. It just seems like a system that will require you to read the owner’s manual to learn all the features.

I’ll credit the company for attempting something both distinctive and comprehensive, but it will take more time to determine how it works in practice. Besides, after my ride, we ran into Yu, the company’s president, who said the demo bike was already two hardware and three software iterations behind the current version.

In any case, the TM-B defining feature is the software that sits between the cranks and the motor, shaping the whole cycling experience. Did Also avoid the uncanny valley?

To a large extent, yes. Once you find the right combination of settings and cadence, cruising down the street feels just like it does on any other bike. It’s impossible to tell that all your legs are doing is driving a generator and sending signals to a sensor or two.

But it didn’t take much to uncover behavior that felt very different. On a normal bike, a sudden pedal mash can often produce a short burst of acceleration followed by a spinout while shifting. On the TM-B, the software adjusts the resistance from the generator nearly instantly so it becomes much harder to pedal, all while boosting power to the motor.

Much of the TM-B’s behavior is defined by its electronics.

Credit: John Timmer

Much of the TM-B’s behavior is defined by its electronics. Credit: John Timmer

In short, it did what I normally would have by shifting gears and adjusting cadence and force—and it did so very quickly, without requiring any intervention. It was a bit like having an automatic transmission on a bike.

The TM-B also avoided a problem I occasionally have on normal bikes: shifting into a gear my legs weren’t ready for. As soon as I started easing off the force I was supplying even slightly, the hardware responded by making it somewhat easier to pedal.

That doesn’t mean you can forget about shifting. There are two ways to set the assist, each with 10 settings. I didn’t have enough time to fully explore how they change the ride, nor did I run the battery flat to experience what Also calls “limp” mode, where nothing but the generator (meaning: your legs) is powering the motor. There’s still plenty to cover in the review.

Still, I came away with the sense that Also has put a lot of thought and effort into the TM-B, resulting in one of the most distinct riding experiences I’ve had, easily surpassing the continuous variable transmission bike I tested last year. And at least on an initial ride, it doesn’t feel like a case of Silicon Valley reinventing things that didn’t need it. The goal isn’t to replace every bike, and the design does seem to offer some real benefits.

In a field where most changes are evolutionary, it’s nice to see a company do a more fundamental rethink.

Photo of John Timmer

John is Ars Technica's science editor. He has a Bachelor of Arts in Biochemistry from Columbia University, and a Ph.D. in Molecular and Cell Biology from the University of California, Berkeley. When physically separated from his keyboard, he tends to seek out a bicycle, or a scenic location for communing with his hiking boots.

156 Comments