Brushless Thruster-Unit

[ROVER3D]

Here you can see my easy-to-build Thuster-units using brushless-motor. There are two 45mm 3-blade propellers each side. With housing you will get a very good speed and protection.
I'm using this units for years....

[Rover]

Thanks for sharing. Looks like a great design. Have you ever conducted any thrust tests. If so, I am curious about the thrust and current draw you see.

Rover

[ROVER3D]

Sorry, haven't tested it yet. But for my application it works fine. At full speed running at 9A. Because of the two propellers there is more security at operation. At a dive one prop breaks but the unit works until the ROV come back to surface.

[KR2_Diving]

I like that concept! are both props the same? (right hand vs left hand)

[ROVER3D]

Yeah good question. I had the same question but if you think about it you will get the right answer . One thing: when the motor turns one prop thrust forward and one backwards

*they have to be the same. if you use two units take one left hand and one right hand to neutralize rotating movement.

i recommend sealing the motor with epoxy: (german link)
http://www.r-o-v.net/viewtopic.php?f=17&t=414

[Lost Bob]

Did those motors come with a long enough shaft or did you install a longer one ?
What are those motors ? Looking for 750 Kv range.
I have a similar idea for my lateral thrusters.

Thanks Bob