# Vassar Robotics builds gearbox-free arms for robot learning

Canonical: https://thelazyweb.com/companies/vassar-robotics/
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Author: Ali Abouelatta (https://thelazyweb.com/authors/ali-abouelatta/)
Published: 2026-09-19
Updated: 2026-09-19
Research type: Company profile
Method: Company and accelerator sources checked 2026-09-19. Product claims are attributed to their sources; this is research, not a hands-on product trial.

Vassar Robotics is building hardware for robot learning, not selling a generic humanoid demo. The current product story is a gearbox-free direct-drive arm aimed at cleaner data and more predictable sim-to-real behavior.

## What it does

The company’s homepage says its transverse-flux motors remove the gearbox from robot joints. The claimed result is direct torque, less backlash, less wear drift and a hardware stack that is easier to model. It is aimed at embodied-AI labs that care about the quality and consistency of their training data. [Vassar Robotics homepage](https://vassarrobotics.com/)

The YC profile describes an open-source semi-humanoid development kit and a path from home data to autonomy. Its launch post described a $200 robot arm for teaching tasks without code and an early batch of units. The current homepage has shifted toward direct-drive actuators, so buyers should treat the launch material as historical context rather than the current product sheet. [YC

[Vassar Robotics builds gearbox-free arms for robot learning](<https://www.thelazyweb.com/companies/vassar-robotics/>)

Source observed: 2026-09-20T02:21:48.848Z. Last checked: 2026-10-08T01:57:44.358+00:00.

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