[PSUBS-MAILIST] Brushless Thruster

[Private via Personal_Submersibles]

Oh neat, I love it when people take the trouble to develop new solutions like that. Well done!

Alec

> On Oct 3, 2016, at 4:07 AM, Alan via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> Just did a pool test of my latest brushless thruster.
> This thruster uses a 60kv (revs per Volt) 6374 (dimensions in mm) brushless
> sensored outrunner motor. The propeller was a 3 bladed 7&1/4" x 4" with no kort nozzle.
> I was getting 30kg (66lb) thrust from 30 amps off 52 volts (1560W) with the thruster
> oil filled. This seems comparable to what Cliff was getting from his Minnkota 101.
> The difference is this is a much smaller unit. I have been keeping a file on
> performance statistics of commercial thrusters & trolling motors & this is slightly 
> above average.
> The manufacturer told me not to run the motor more than 40 amps continuosly,
> so I am being conservative with the 30 amp draw. I could bump it up by putting
> on a bigger prop.
> Next step is to use it as a boat motor & notch up 100 or so hours, then build
> another housing with a mechanical seal.
> Added a couple of photos to the project page, but they loaded upside down for
> some reason. Couldn't change them. 
> http://www.psubs.org/projects/1235435392/brushlessthruster/
> Alan
> 
> Sent from my iPad
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