So the Baba Yaga drones typically use six BLDC motors in a hexacopter configuration, with KV ratings between 900 and 1,250 (Which Raven could support). This KV range allows for a good balance of torque and speed, optimized for lifting payloads in the 15–20 kg range. The motors are paired with larger propellers to maximize thrust efficiency, especially in loitering and low-speed bombing roles. It’s an architecture that's ideal for low-cost, high-impact strike missions. As for which brands in particular they are using in Ukraine to outfit their drones, I'm not entirely certain, but I believe they are just using whatever they can get their hands on (particularly, of course, chinese motors).
________________________________
From: Rick <rick@mavrix.one>
Sent: Wednesday, July 2, 2025 10:35 AM
To: Jason Blick <jason@corvexsystems.com>
Subject: Re: Do you know this company?

Good info.
Thanks.
What do you know about the motors on the Baba Yaga drones being flown in Ukraine?

Rick Mislan, PhD
https://mavrix.one<https://mavrix.one
https://mavrix.one
https://mavrix.one>
[X]

On July 2, 2025 at 11:56:12 AM, Jason Blick (jason@corvexsystems.com<mailto:jason@corvexsystems.com>) wrote:

Morning Rick,

Yes, I’m familiar with ECM. Their PCB stator motors are well engineered and do provide for some interesting niche use cases, exclusively on the light-lift end of the spectrum. These axial-flux designs are pretty compact and efficient, however they do have torque limitations in heavier load scenarios, which make them unable to be effectively utilized for large vehicles.

We’re actually planning to introduce our own PCB stator production capacity in the latter half of Phase Charlie. That’ll give us vertical control while avoiding overreliance on offshore PCB fabs, which are mostly China-based today. ECM is one of the few U.S.-based players doing this seriously, but there’s still very limited domestic volume production, due to bottlenecks in magnetics and the fact their material stock is very downstream of the consumer electronics industry.

Regards,
Jason

________________________________
From: Rick <rick@mavrix.one>
Sent: Wednesday, July 2, 2025 3:50 AM
To: Jason Blick <jason@corvexsystems.com>
Subject: Do you know this company?

Morning Jason,
Found this company through some other resear
https://pcbstator.com/
Can they help you/us?
Not just for drones, but autonomous vehicles...
Are there others like it in the US?

Rick Mislan, PhD
https://mavrix.one<https://mavrix.onehttps://mavrix.onehttps://mavrix.one>
[X]
