Propulsion System - Motors, Gears, etc

I have the kort of 80mm and the motor 360kv. I have to design an appropriate housing to adapt it and make it waterproof. Due to lack of time I think it will take a month or so to get some test results

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I wonder if it might be possible to grind off the housing of the kort that attaches to the motor. Then to extend the aluminium tube covering, like what most are putting over the motor, extending that tubing over to the kort glueing/welding/screwing it together.

I hope that makes sense? Could possibly be a very simple housing adapting.

The engine should not be close, Kort prop needs sufficient water supply.

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Hi @g.gregory8, did you have a chance to test this gearbox. Does it seem good steel quality?

What do you guys think about this ?

Hi Noah ! You should check this section : For who try/have tried direct drive with outrunner - #104 by MAC - Propulsion System (Motor, Gears) - FOIL.zone

Hi,

I have this from my project, ewrithing its NEW. If anyone needs it?

GEARBOX APEX DYNAMICS PE II 050 (5:1) INPUT SHAFT 8 OUTPUT SHAFT 12

MOTOR HALTER (HOLES in circle fi30 (6x)

Hi David, where are you from (considering shipping and customs)?

Best Regards
Robert

Hello
is it the same you use on your videos?
if yes i can buy it if christmass price

I emailed Bruno asking for a custom motor, he said there was a 58mm 100kv motor with 8kw power coming out “next week”. Do you think this picture might be referring to the same one?

If a motor like that exists I think it could easily power a direct drive. It’s got the right kv, high power and also only 58mm in diameter meaning it could it in a 2.5" or smaller Aluminum tube.

I’m not sure how to post images, if someone wants I can forward the email exchange to them.

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Nice. Sounds almost too good to be true :slight_smile: . Let’s get this info posted with the pictures. Forward the thread to me if you want me to post the pics.

Please post it here, would be apreciated.

This motor sounds just perfect, would be nice if it was shared… :wink:

Did you ask him about the voltage, where you can reach the 8kW?
KV is indirect proportional to N * B * L * R;
N= number of winds, B magnetic field strength (depending on magnets), L the length (of one wind in the field, so approximately the stator length) and R the radius.
So the lower the KV, the bigger either radius, length or winds. So either this motor is about 5 times as long as the SSS500KV or it uses about 5 times the winds… and thus (assuming they get the same usage of the space) only ~1/5 of the amps and ~5 times higher Voltage…

So gona be interesting…

I don’t mind the higher voltage over less current.

Good luck getting a 450V Mosfet/ESC.
And then they have much higher Rdson and you get the same heat losses…

The details I had are all I got. Pacificmeister emailed him about more details, pictures of the motor and specs. He’ll probably post the pictures when Bruno replies.

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I got a short email reply from Bruno this morning: “100KV, 120V max, 65A max, for the 58mm motors”.

He also sent these pictures with dimensions/weight:

20180202_115124

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Are these going to be a production item any time soon?

There may be some safety concerns about running 120V in the water, OHSA recommends a maximum of 50 in the United States.

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