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SpaceX moves Super Heavy booster to make room for Mechazilla arm installation

SpaceX has temporarily relocated the first flightworthy Super Heavy booster to make way for Mechazilla arm installation. (NASASpaceflight - bocachicagal)

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5 years ago

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For the second time, SpaceX has removed the first potentially flightworthy Super Heavy from Starbase’s orbital launch mount – this time to reportedly make room for the installation of a pair of huge ‘Mechazilla’ arms.

Designed with three primary purposes in mind, SpaceX has decided to outfit Starbase’s Starship launch tower – an almost 500 ft (150m) tall framework – with three massive arms that CEO Elon Musk has informally deemed “Mechazilla.” The first of those arms is a relatively simple swinging structure that has already been installed on the tower and outfitted with a giant claw-like appendage. Once a few more parts are installed and a bit more plumbing completed, that “quick disconnect arm” or QD arm will help stabilize Super Heavy during Starship installation and connect the massive reusable upper stage to the pad’s tank farm and power supplies while still on the ground.

The star of the show, though, has always been a pair of even larger arms that are hoped to one day all SpaceX to catch Super Heavy boosters and Starships out of the air.

Of course, those catcher arms – deemed chopsticks by SpaceX employees – have more than one purpose. Likely explaining why they were ever considered in the first place, SpaceX’s Starbase launch site – situated walking distance from the Gulf of Mexico on the South Texas coast – was always going to have to deal with extreme weather and high winds on a practically daily basis. Additionally, conditions that are already disruptive at sea level become a near-constant nightmare for vertical launch vehicle integration, where Starship and Super Heavy are effectively hollow cylinders with extensive surface areas that need to be regularly and precisely manipulated 50-150m (200-450 ft) above the ground.

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Already, SpaceX regularly has to halt work involving cranes and boom lifts at Starbase. For Starbase (Boca Chica) to ever be able to support regular orbital Starship launches, let alone the dozens to hundreds per year Musk has hinted at, cranes were never going to be a viable long-term solution for the all-weather capabilities and rapid reusability SpaceX requires. In other words, whether SpaceX ever actually manages to routinely ‘catch’ the world’s largest rocket booster and upper stage in the future, a tower with giant arms (or some other exotic crane-free solution) was always going to be needed at Starbase.

The Starship launch tower’s “Mechazilla” rocket-catching arms. (NASASpaceflight – bocachicagal)

This is all to say that the Starship launch tower’s massive pair of arms – (in)famous for Musk’s plans to catch rockets – have a more immediate and guaranteed purpose: lifting, stacking, and otherwise manipulating Starship and Super Heavy in almost all weather conditions. Using tiny hardpoints located just under Super Heavy’s grid fins and (once installed) under Starship’s forward flaps, the chopstick arms will be mounted on a carriage that will attach to rails installed on the exterior of three of the tower’s arms. A complex system of cables, winches, motors, and pulleys will then attach to that carriage, giving the carriage and its arms the ability to move up and down the tower.

In theory, that means that the launch tower arms will be able to drop down, grab Super Heavy off of a SpaceX transporter, and lift it onto the orbital launch mount. Then, once the quick disconnect arm has swung into place and ‘grabbed’ Super Heavy’s interstage to secure it, the main arms will again drop down, grab Starship off of another transporter, and raise the 50m (~165 ft) rocket around 100m off the ground to install it on top of Super Heavy. Finally, the QD arm can then connect Starship to the pad systems.

Super Heavy Booster 4 was rolled to the suborbital pad for temporary storage after being removed from the orbital launch mount a second time. (NASASpaceflight – bocachicagal)

SpaceX has been working around the clock on those chopstick arms for months. However, thanks to information shared by a forum member who visited Starbase and briefly chatted with one of the SpaceX technicians on-site, they might be almost finished. According to the employee they spoke with, SpaceX planned to temporarily remove Super Heavy Booster 4 from the orbital launch mount to make room for Mechazilla chopstick arm installation as early as this weekend (now come and gone) or next week. Mere days later, SpaceX returned B4 to a transport stand and moved the booster out of the way. In other words, having already been proven right with Super Heavy, it appears that SpaceX really does intend to install the Starship launch tower’s chopstick arms and carriage as early as this week. Stay tuned for more!

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Eric Ralph is Teslarati's senior spaceflight reporter and has been covering the industry in some capacity for almost half a decade, largely spurred in 2016 by a trip to Mexico to watch Elon Musk reveal SpaceX's plans for Mars in person. Aside from spreading interest and excitement about spaceflight far and wide, his primary goal is to cover humanity's ongoing efforts to expand beyond Earth to the Moon, Mars, and elsewhere.

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Tesla is sending its humanoid Optimus robot to the Boston Marathon

Tesla’s Optimus robot is heading to the Boston Marathon finish line

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7 hours ago

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April 20, 2026

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Tesla’s Optimus humanoid robot will be stationed at the Tesla showroom at 888 Boylston Street in Boston, right along the final stretch of the Boston Marathon today, ready to cheer on runners and pose for photos with spectators.

According to a Tesla email shared by content creator Sawyer Merritt on X, Optimus will be at the Boston Boylston Street showroom on April 20, coinciding with Marathon Monday weekend. The Boston Marathon finishes on Boylston Street, and the surrounding area draws hundreds of thousands of spectators along with international broadcast coverage. Placing Optimus there puts it in front of a massive public audience at zero advertising cost.

The Tesla showroom is at 888 Boylston Street, between Gloucester Street and Fairfield Street. The final mile of the marathon runs directly along Boylston Street, with runners passing the big stores before reaching the finish line at Copley Square.

Optimus was first announced at Tesla’s AI Day event on August 19, 2021, when Elon Musk presented a vision for a general-purpose robot designed to take on dangerous, repetitive, and unwanted tasks. In March 2026, Optimus appeared at the Appliance and Electronics World Expo in Shanghai, where on-site staff stated that mass production of the robot could begin by the end of 2026. Before that, it showed up at the Tesla Hollywood Diner opening in July 2025 and at a Miami showroom event in December 2025.

Tesla’s well-calculated display of Optimus gives the public a low-pressure first encounter with a robot that Tesla is preparing  to soon deploy at scale. The company has previously indicated plans to manufacture Optimus robots at its Fremont facility at up to 1 million units annually, with an Optimus production line at Gigafactory Texas targeting 10 million units per year.

Tesla showcases Optimus humanoid robot at AWE 2026 in Shanghai

Musk has said that Optimus “has the potential to be more significant than the vehicle business over time,” and separately that roughly 80 percent of Tesla’s future value will come from the robot program. Whether that holds depends on production execution. For now, Boston gets a preview of what that future looks like, standing at the finish line on Boylston Street while 32,000 runners pass by.

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Tesla expands Unsupervised Robotaxi service to two new cities

This expansion builds directly on Tesla’s existing operations. Robotaxi has been ramping unsupervised rides in Austin for months and maintains activity in the San Francisco Bay Area.

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2 days ago

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April 18, 2026

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Credit: Tesla

Tesla has taken a major step forward in its autonomous ride-hailing ambitions.

On April 18, the company’s official Robotaxi account announced that Robotaxi service is now rolling out in Dallas and Houston, Texas. The update signals the rapid scaling of unsupervised autonomous operations in the Lone Star State.

The announcement includes a compelling 14-second video captured from inside a Model Y. Shot from the passenger perspective, the footage shows the vehicle navigating suburban roads in both cities with zero driver intervention, with no Safety Monitor to be seen.

Tesla also shared geofence maps highlighting the initial service areas: a compact zone in Houston covering parts of Willowbrook and Jersey Village, and a similarly defined area in Dallas near Highland Park and central neighborhoods.

This expansion builds directly on Tesla’s existing operations. Robotaxi has been ramping unsupervised rides in Austin for months and maintains activity in the San Francisco Bay Area.

With Dallas and Houston now live, Texas hosts three active hubs—an impressive concentration that triples the company’s Lone Star footprint in just weeks. The move aligns with Tesla’s Q4 2025 earnings guidance, which outlined a broader H1 2026 rollout across seven U.S. cities, including Phoenix, Miami, Orlando, Tampa, and Las Vegas.

Texas offers favorable regulations, high ride-share demand, and relatively straightforward suburban-to-urban driving patterns ideal for early autonomous scaling. While initial geofences appear modest—roughly 25 square miles per city—Tesla has historically expanded these zones quickly as it gathers real-world data.

Tesla confirms Robotaxi expansion plans with new cities and aggressive timeline

Unsupervised operation marks a critical milestone: passengers can summon, ride, and exit without safety drivers, a leap beyond many competitors still requiring human oversight.

For Tesla, the implications are significant. Successful scaling in major metros could accelerate the transition to a fully driverless fleet, unlocking new revenue streams and validating years of Full Self-Driving investment.

Riders gain convenient, potentially lower-cost mobility, while the company edges closer to Elon Musk’s vision of Robotaxis transforming urban transport.

As Tesla pushes into more cities this year, today’s launch in Dallas and Houston underscores its momentum. Hopefully, Tesla will be able to expand unsupervised rides to another U.S. state soon, which will mark yet another chapter in this short-but-encouraging Robotaxi story.

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Tesla is pushing Robotaxi features to owner cars with Spring Update

Tesla has quietly begun rolling out one of its most forward-looking Robotaxi-inspired features to existing customer vehicles.

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2 days ago

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April 18, 2026

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Tesla is starting to push Robotaxi features to owner cars, and the first instances are coming as the Spring 2026 Update starts to roll out.

Tesla has quietly begun rolling out one of its most forward-looking Robotaxi-inspired features to existing customer vehicles.

With the 2026 Spring Update (version 2026.14+), the rear passenger display now features a fully interactive navigation map that works while the car is driving — a capability previously reserved for Tesla Robotaxi.

Until now, Tesla’s rear displays have been largely limited to media controls, climate settings, and static route overviews. The new interactive map transforms the backseat into an active navigation hub, exactly the kind of passenger-first interface Tesla has been prototyping for its driverless fleet.

In a Robotaxi, where no one sits behind the wheel, every rider will need intuitive, real-time map access. By shipping this UI into thousands of owner cars months ahead of the Cybercab’s planned unveiling, Tesla is stress-testing the software in real-world conditions and giving loyal customers an early taste of the autonomous future.

The rollout is still in its early wave. Only a small number of vehicles have received 2026.14.1 so far, but the feature is expected to expand rapidly in the coming weeks. Owners of Model S, Model X, Model 3, Model Y, and Cybertruck are all eligible.

For buyers of the new Signature Edition Model S and X Plaid vehicles — whose deliveries begin in May — the update will likely arrive shortly after they take delivery, meaning the final chapter of Tesla’s flagship lineup will ship with cutting-edge Robotaxi preview tech baked in.

Elon Musk has long emphasized that Tesla ships supporting infrastructure well before new products launch. This rear-map rollout is a textbook example of that philosophy — quietly preparing both the software and the customer base for a world of fully driverless rides.

While the interactive map may seem like a modest convenience upgrade on the surface, its deeper purpose is unmistakable. Tesla is using its massive installed base of vehicles as a proving ground for the exact passenger experience that will define the Robotaxi era.

For current owners, it’s a free preview of tomorrow’s mobility; for the company, it’s invaluable data and real-world validation before the Cybercab hits the streets.

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