New Product: The T500 Thruster!

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We have a new product to thrust upon the world: the T500 Thruster! It will be available through pre-orders, starting on Thursday, May 26th, at 9am Pacific Time, with a limited quantity of 300 units available for pre-order!

The T500 Thruster is a high-power, ruggedized underwater thruster with over three times the thrust of the T200 Thruster. It generates 16.1 kgf (35.5 lb) of thrust at an operating voltage of 24V, consuming just over 1 kW of power. The T500 Thruster is designed for ROVs, USVs, AUVs, and even human-carrying vehicles like kayaks or standup paddleboards.

The T500 Thruster represents the next generation in our thruster design. It has a lot of similarities to the T200 Thruster, but with improvements to make it more powerful and robust. To achieve that, it has a larger 140mm (5.5″) outside diameter and has a powerful new motor built in. It is made from impact resistant glass-filled polycarbonate that’s tougher than the regular polycarbonate used in the T200. The magnet rotor design is improved with a metal abrasion shield that protects the magnets from damage due to sand or debris in the thruster and it has a new internal overlapping design that minimizes the ability of sand and particulate to enter the thruster.

The T500 Thruster compared to the T200 Thruster. It has 3 times the thrust!

It achieves maximum performance at 24V, but it also works well at 16V, the operating voltage of our lithium-ion battery and the BlueROV2. At 16V, it generates nearly 70% more thrust than the T200 Thruster, but at much greater efficiency and similar power consumption. That means you can directly replace T200s in your application and get a 70% performance boost without any additional power consumption!

The T500 Thruster has four M4 mounting holes that make it easy to install as well as a pre-installed WetLink Penetrator (WLP) to seal the cable. Note that the penetrator has an M14 thread size, so it requires larger holes than we have on our enclosure end caps. We’ll have several new end caps available in the future to support this size and assist with T500 designs.

In addition to the T500 Thruster, we also have a new speed controller that is well-suited for use with the T500. The Basic ESC 500 operates between 7-26V (2s-4s) and is optimized for use in spaces with poor cooling, like inside an ROV enclosure or USV hull. The ESC comes with everything needed to use it with the T500 Thruster.

Pre-orders for both the T500 Thruster and Basic ESC 500 will open on Thursday, May 26th, at 9am PT. We have a limited quantity of 300 units available for pre-order. Shipments of those units are expected to start in July 2022, followed by regular availability of the thruster in our store later this summer.

Pre-Order Form - Opening May 26th at 9am Pacific Time

We’ve been looking forward to sharing this news for a long time and we hope you’ll find some amazing applications for the T500 Thruster. That’s all for today – thanks for reading!


Okay the T500 looks great. Kudos to developers. BUT…it won’t fit a BlueROV! Is there a T200+ in the works?

Hi @egarriso, welcome to the forum :slight_smile:

This is true… perhaps it’s intended for something else? :wink:

Product improvements are always something we’re working on, and we do have some plans for making the T200 even better.

What would you want from a “T200+”? :slight_smile:


I would very much like a T200+ that can stay submerged in salt water for 6-12 months with very low risk of failing due to rust/corrosion (it might already be possible today if you are lucky with the coatings etc. and no rubbing?).

I know it is a fringe case, but hope we will see more and more of long term submerged/resident drones (ROV/AUV) and it would be great if BR parts can be used in this context.

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The T200 could benefit from the T500 impeller design.

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Very interested to know whether it is compatible with a 8S LiFePO4 battery, that is 29.2v max voltage (T500 and matching ESC).

It doesn’t need to handle continuous 100% thrust, if required I can dial back power to match rated 24v power… but being able to use a 8S battery would simplify project, compared to a 6S LiFePO4 battery that would be annoying to charge.

Hi @aalleexx, welcome to the forum :slight_smile:

I expect our advice will be similar to that for the T200 (i.e. operating beyond the rated voltage isn’t recommended, and doing so voids the warrantee, but exceeding the rating does not guarantee instant failure - it increases wear and makes failure much more likely to happen sooner).

That said, I’m unsure whether additional testing has been done on the T500 and Basic ESC 500 for voltages outside the rated range, so I’ve asked internally in case there’s some extra information we can provide that’s more precise to those products specifically.

Following up on this,

I would reiterate that we design and rate our products the way we do to ensure safe and reliable operation, and pushing components beyond their ratings is likely to end in both failure and upset.

There may be ways to use and/or modify a component that in theory reduce the likelihood of a failure (e.g. reinforcing an enclosure tube to prevent tube implosion), but that’s akin to doing your own component design (which we can’t verify or provide ratings for). Our ratings and advice are based on our analyses and testing of each product as a whole, in practice, for how they’re intended to be used :slight_smile:

Thanks for the quick reply!

Nothing is rated “6S”, it is rated “6S of a particular chemistry”. It seems Adam is working with NMC/LCA/LCO chemistries (4.20v full charge) and I’m asking about LFP (3.65v full charge).

Since the T500 is marketed for “human-carrying applications like kayaks”, I’m pretty sure you’ll get more queries about 8S-LFP because people may want to optimize for safety once the T500 is “generally available” and because DC/DC converters in the 1kW range aren’t realistic in such an application, unless you want to deal with 250v+ batteries (or tether). Other reason is that people will get batteries from a 3rd party anyway because of shipping issues.

Hi all,

i’m currently testing a hi performances FOC controller with the T500. ( with pretty good result at this time … )

To get the exact rpm of the thruster ( hard to measure underwater … ) , i need to know the number of poles of the T500 motor.

Anybody knows ?

Thanks in advance ! :grinning:

@luc-rossi That’s awesome! Would love to hear more. The T500 has 14 magnetic poles, just like the T200.


Thanks Rusty !

It’s about a very exciting ROV project were i need precise control at low speed…

I’m using an ESC based on VESC project.
In addition to fine control at slow speed, there’s many benefits :

  • the current control loop allow limitation of torque, preventing damages to motor or ESC if stuck
  • you know in real time speed, current, power, …
  • ppm, serial and CAN interfaces
  • and many more ! :grinning:

I’ll probably post something at the end of my tests …

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