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E-bike review — Swytch DIY e-bike conversion kits: A very, very long-term review What it’s like buying, installing, and riding an e-bike upgrade.

Kevin Purdy – Oct 20, 2023 2:19 pm UTC Enlarge / There aren’t many e-bikes you can buy with rim brakes and mid-’90s gray/pink styling.Kevin Purdy reader comments 56 with

Recommending the Swytch e-bike conversion kit feels like recommending a DIY desktop computer upgrade. Youre not evaluating or describing any one experience so much as telling somebody that it might save them money, that it could be a fun project, and that the end result can be a point of pride. Though it would be easier, you cant replicate the upgrade experience by simply buying another bike. It all depends on what you want out of an e-bikeor a weekend project.

Ive now converted two bikes with Swytch kits, Ive walked my in-laws through upgrading their own cruiser-style bikes with them, and Ive made tweaks and fixes to all of the bikes over two years. What I’ve learned is that theres no single “Swytch kit experience” because every bike is a collection of components, and each component hasdimensions and angles and quirks that play off the kit in different ways.

Some people will drop the front wheel off their bike, replace it with Swytchs wheel, strap down a few cables with zip-ties, mount a battery, and feel the boost on their first ride a couple hours later. Some people will learn a lot more about rims, tires, and beads than they knew before or discover that their seemingly normal-looking front fork is quirky and find that the dropouts require some filing.

If youre willing to dig into your bike just a bit, or youve got someone on the hook ready to do that for you, the Swytch kit is a good option to help with commutes, hills, or casual rides. It’s less helpful if you’re looking for gobs of power, prefer to own a complete second bike, or want lots of range. Small things can go wrong, and the support is far from perfect. But the end result is typically a fun upgrade and a great introduction to e-bike life. Buying a Swytch kit: The first DIY experience

EnlargeWith most e-bikes, even the kind shipped directly to your house, there are only a few choices when ordering: color, frame size (typically based on height), maybe your battery size and range, and accessories. Advertisement

When youre ordering a Swytch, you have to know (or learn) a bit more about your bike. You need your wheel size, for instance, because Swytch offers kits for 29er, 28-inch (or 700c), 26-inch, 20-inch, and Brompton-sized 16-inch tires. You pick out a wheel color (black or silver) and decide if you want an optional throttle or just pedal assist.

The big choice is between batteries: the 90 Wh, 15 kilometer (9.3 mile) Air model or the 180 Wh, 30 km (18.6-mile), cant-take-it-on-a-plane Max version. And you have to confirm a few things about your bike, including whether you have disc or rim brakes and the width of your fork dropouts. The process has improved since my experienceyou now start off by telling Swytch your bike model, or by taking a photo, and then get back a compatibility report.

The next issue is the timing. You typically cant buy a Swytch kit from standing inventory and have it shipped within a few days. Swytch batches preorders together and ships them in broad timeframes, like “Fall 2024.” After you sign up for their waitlist, youll receive notice when you can order. Swytch previously told me that this helped keep prices lower and allowed the company to offer a wider array of kits and options to customers. This is likely true, but it means you have to delay your e-bike project enthusiasm by a few weeksor maybe months.

You’ll also need to consider all the accessories you’ll want for your Swytch up front. Swytch doesn’t make it easy to buy spare chargers, batteries, or alternative battery mounts. There’s a web market for certain countries, including the U.S., but it doesn’t offer everything. Your best bet is to add them onto your initial order in the order portal, which you can only access once you’ve been tapped for a pre-order, or to contact support (more on that later).

The price of a Swytch kit depends on your range choice, wheel size, and accessories, but they generally run between $550 and $1,200, or even $1,500 with no pre-order sale. There’s an upcoming stripped-back version, frame-hung version, the Swytch Go, that’s available for pre-order and purports to start at $400. Page: 1 2 3 4 Next → reader comments 56 with Kevin Purdy Kevin is a senior technology reporter at Ars Technica, covering a variety of technology topics and reviewing products. He started his writing career as a newspaper reporter, covering business, crime, and other topics. He has written about technology and computing for more than 15 years. Advertisement Channel Ars Technica ← Previous story Next story → Related Stories Today on Ars

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Tesla shares drop 7% in premarket trading after Elon Musk says he is launching a political party

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Tesla shares drop 7% in premarket trading after Elon Musk says he is launching a political party

White House Senior Advisor Elon Musk walks to the White House after landing in Marine One on the South Lawn with U.S. President Donald Trump (not pictured) on March 9, 2025 in Washington, DC.

Samuel Corum | Getty Images News | Getty Images

Tesla shares fell in premarket trade on Monday after CEO Elon Musk announced plans to form a new political party.

The stock was down 7.13% by 4:27 a.m. E.T.

Musk said over the weekend that the party would be called the “America Party” and could focus “on just 2 or 3 Senate seats and 8 to 10 House districts.” He suggested this would be “enough to serve as the deciding vote on contentious laws, ensuring that they serve the true will of the people.”

The billionaire’s involvement in politics has been a point of contention for investors. Musk earlier this year was part of the so-called Department of Government Efficiency and worked closely with President Donald Trump — a move seen as potentially hurting Tesla’s brand.

Musk left DOGE in May, which helped Tesla’s stock.

Now tech billionaire’s reinvolvement in the political arena is making investors nervous.

“Very simply Musk diving deeper into politics and now trying to take on the Beltway establishment is exactly the opposite direction that Tesla investors/shareholders want him to take during this crucial period for the Tesla story,” Dan Ives, global head of technology research at Wedbush Securities, said in a note on Sunday.

“While the core Musk supporters will back Musk at every turn no matter what, there is broader sense of exhaustion from many Tesla investors that Musk keeps heading down the political track.”

Musk’s previous political foray earned him Trump’s praise in the early days, but he has since drawn the ire of the U.S. president.

The two have clashed over various areas of policy, including Trump’s spending bill which Musk has said would increase America’s debt burden. Musk has taken issue to particular cuts to tax credits and support for solar and wind energy and electric vehicles.

Trump on Sunday called Musk’s move to form a political party “ridiculous,” adding that the Tesla boss had gone “completely off the rails.”

Musk is contending with more than just political turmoil. Tesla reported a 14% year-on-year decline in car deliveries in the second quarter, missing expectations. The company is facing rising competition, especially in its key market, China.

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Paris’ popular bike share program has a big sticky finger problem

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Paris' popular bike share program has a big sticky finger problem

Paris’ bike-share system, Vélib has long been considered one of the shining success stories of urban micromobility. With a massive fleet of over 20,000 pedal and electric-assist bicycles around Paris, the service has helped millions of residents and tourists get around the City of Light without needing a car or scooter. But lately, a growing problem is threatening to knock the wheels off this urban mobility marvel: theft and joyriding.

According to city officials and the service operator, more than 600 Vélib bikes are now going missing every single week. That’s over 30 bikes a day simply vanishing from the system – some stolen outright, others taken on “joy rides” and never returned.

“At the moment we’re missing 3,000 bikes,” explained Sylvain Raifaud, head of the Agemob company that currently operates the Velib system. That’s nearly 15% of over 20,000 Vélib bikes across Paris.

The sticky-fingered culprits aren’t necessarily professional thieves or organized crime rings. Instead, they’re often regular users who treat the shared bikes like disposable toys.

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The city estimates that many people have figured out how to pry the bikes out of the system’s parking docks, unlocking one for a casual cruise and then ditching it somewhere far from a docking station.

Once pried free, the bikes are technically usable for the next 24 hours until their automatic locking feature kicks in. At that point, the bikes are often simply abandoned. Some end up in alleyways. Others get tossed in rivers. A few just disappear completely.

And since the bikes are intended to be parked at their many docking stations around the city, they don’t have GPS chips, further complicating recovery of “liberated” bikes.

The issue started small but has grown into more than an inconvenience – it’s beginning to undermine the entire purpose of the service. With bikes going missing at such a high rate, many Vélib docking stations are left empty, especially during rush hours.

Riders looking for a quick commute or a convenient hop across town are increasingly finding themselves without available bikes, or having to walk long distances to find a functioning one.

That kind of unreliability chips away at user confidence and threatens to drive potential riders back into cars, cabs, or other less sustainable forms of transport at a time when Paris has already made great strides to dramatically reduce car usage in the city.

The losses are financially painful, too. Replacing stolen or vandalized bikes isn’t cheap, and the resources spent on tracking down missing equipment or reinforcing anti-theft measures are stretching thin. Vélib has faced theft and vandalism issues before, especially during its early years, but this latest surge has officials sounding the alarm with renewed urgency.

Officials acknowledge that there’s no easy fix. Paris, like many cities with bike-share systems, walks a fine line between accessibility and accountability. Part of what makes Vélib so successful is its ease of use and widespread availability. But those same features make it vulnerable to misuse – especially when enforcement is limited and the consequences for abuse are minimal.

The timing of the problem is especially unfortunate. In recent years, Paris has seen impressive results in reducing car traffic, expanding bike lanes, and promoting cycling as a key part of its sustainable transport strategy. Vélib is a cornerstone of that plan. But if the system becomes too unreliable, it risks losing the very people it was designed to serve.

Meanwhile, as Parisians increasingly find themselves staring at empty docks, the challenge for the city and Vélib will be to restore confidence in the system without making it harder to use. That means striking the right balance between freedom and responsibility, between open access and protection against abuse.

In a city where cycling is supposed to be the future of mobility, losing thousands of bikes to joyriders and sticky fingers isn’t just frustrating; it’s unsustainable.

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CNBC Daily Open: Elon Musk, founder of companies and political parties

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CNBC Daily Open: Elon Musk, founder of companies and political parties

U.S. President Donald Trump and Elon Musk attend a press event in the Oval Office of the White House in Washington, D.C., U.S., May 30, 2025.

Nathan Howard | Reuters

When they lose a significant other, most men do indeed become a “TRAIN WRECK.” Then they pick up the pieces of their lives and start living again — paying attention to their personal grooming, hitting the gym and discovering new hobbies.

What does the world’s richest man do? He starts a political party.

Last weekend, as the United States celebrated its independence from the British in 1776, Elon Musk enshrined his sovereignty from U.S. President Donald Trump by establishing the creatively named “American Party.”

Few details have been revealed, but Musk said the party will focus on “just 2 or 3 Senate seats and 8 to 10 House districts,” and will have legislative discussions “with both parties” — referring to the U.S. Democratic and Republican Parties.

It might be easier to realize Musk’s dream of colonizing Mars than to bridge the political aisle in the U.S. government today.

To be fair, some thought appeared to be behind the move. Musk decided to form the party after holding a poll on X in which 65.4% of respondents voted in favor.

Folks, here’s direct democracy — and the powerful post-separation motivation — in action.

 — CNBC’s Erin Doherty contributed to this report.

What you need to know today

And finally…

An investor sits in front of a board showing stock information at a brokerage office in Beijing, China.

Thomas Peter | Reuters

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