[PSUBS-MAILIST] Alan's thrusters

Tue Nov 3 10:41:55 EST 2015

Alan
Thanks I will do as you advise ill wait for outcome of your tests.Lots of
other things to do
Glen.

On Mon, Nov 2, 2015 at 10:25 PM, Alan James via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Thanks for the video clip Glen,
> that beast was moving pretty quickly.
>   The shaft is 8mm inside the motor with a very slight increase in
> diameter where it
> moves out of the motor. At that point there is a flat section for 2 grub
> screws to
> secure it. Then it transitions to 10mm to fit the propeller. And there are
> a couple of
> o-ring grooves as well. I have ordered a "follower" for my lathe to
> support the rod
> when machining as there is a bit of flex in it.
> It is an outrunner motor and the can is secured with a number of screws
> that are
> lock tighted in. Very hard to remove & I have stuffed threads drilling
> them out.
> It is a sensorless motor & most of the BLDC ESC manufacturers (like Kelly)
> that produce
> controllers to operate from joy sticks, don't do much in the way of
> sensorless
> controllers in that power range. There may be a way of mounting hall
> sensors to the
> inside of the thruster housing to turn it in to a sensored motor.
> I need 6 of these initially so it will be worth my while sorting the
> problems.
> I get them from either the HK International or Aussie warehouse.
> There is the Haswing Protruar brushless motor. Emile uses one & said the
> gearbox was a bit noisy.
>
> http://www.haswingmarine.com.au/Protruar-2HP-Electric-Outboard-Motor-Haswing-100lbs-.html
> If you can hang off a bit, I will do the donkey work on these motors so
> you can see if it will
> be worthwhile. I should have built the housing & done my in pool testingI
> by the end of the Month.
> I may be in the position to make some available later down the track.
> Cheers Alan
>
>
> ------------------------------
> *From:* glen brown via Personal_Submersibles <
> personal_submersibles at psubs.org>
> *To:* Personal Submersibles General Discussion <
> personal_submersibles at psubs.org>
> *Sent:* Tuesday, November 3, 2015 5:04 AM
> *Subject:* Re: [PSUBS-MAILIST] Alan's thrusters
>
> Thanks Alan
> Extended 8mm shaft that's easy. Heli ect only turns one direction I c what
> you mean a boat or car esc will work.
> .Maybe a air res connected by hydraulic pipe to banjo coupling for
> mobility fitted on motor housing for comp.
> Did you get your motor from the UK?
> Glen ps videos are too big to send.
>
> On Mon, Nov 2, 2015 at 4:04 PM, Alan via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
>
>
> Glen,
> yes it is the Hobby King motor. but all is not straight forward. the
> easiest way
> to adapt a boat prop when in a housing is to machine a new central motor
> shaft.
> It is difficult finding a suitable electronic speed controller. only the
> boat & some car
> esc's have reverse & everything is radio control. There are various
> functions
> needed to be programmed in to the motor controller & some adaptations need
> to be
> made to run it off a joy stick. I may have to get an esc taylor made once
> I know the
> motor is perfect for the job & I have the stats on it. I have a helicopter
> / plane
> transmitter & apparently There are different transmitters for land based
> units.
> I am intending to oil compensate but with an air compensation method.
> I will be using either a relieving type pressure regulator set low, or a
> modified
> second stage regulator. so the air will be pressurising the oil to
> ambient. If the oil
> runs out I will still have air. I will experiment with oil & air.
> Any videos of your helicopter action?
> Alan
>
>
> Sent from my iPad
>
> On 2/11/2015, at 10:31 pm, glen brown via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
> Alan
> Is it the same motor you got from Hobby King? the reason being I want to
> order one for my stern thruster.Yes we dart and herd capture in a boma
> using helicopter very dangerous work.Are you going to go air comp ?
> Glen
>
> On Mon, Nov 2, 2015 at 11:09 AM, Alan via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
> Thanks Glen,
> yes I'm using a low kv motor. I have tested it in a pool with a 2hp
> boat prop & it worked well. I didn't have a housing on the motor, just
> bare motor
> in the pool. I didn't  check the amp draw at the time. So the next stage
> is testing
> it with a housing.
> Sounds like you have been having fun. were you tagging the animals or
> something?
> Alan
>
> Sent from my iPad
>
> On 2/11/2015, at 9:04 pm, glen brown via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
> Hi Alan
> Well done with the ruga.Are you still planning on using that H King
> turnigy sk3 bldc and if so have you done any test with that prop yet.Been
> flying Heli's catching game for the last couple of months tense work,any
> case good to be on the ground and able to tinker on my sub again for summer.
> Glen
>
> On Mon, Nov 2, 2015 at 4:04 AM, Alan James via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
> Hi Hank,
> I am waiting for an adapter plate from China so I can put a larger
> chuck on my lathe that will hold 100mm round aluminium bar.
> Then I can machine the housing.
> Have replaced the motors central shaft with a longer 316 ss shaft
> & mounted a propeller on it. Have it sitting in a vice on my kitchen
> table & am having fun powering it up.
> Am also making up a stronger jig to mount it on for in pool testing
> of thrust & amp draw under load.
> Cheers Alan
>
>
> ------------------------------
> *From:* hank pronk via Personal_Submersibles <
> personal_submersibles at psubs.org>
> *To:* Personal Submersibles General Discussion <
> personal_submersibles at psubs.org>
> *Sent:* Monday, November 2, 2015 2:39 PM
> *Subject:* [PSUBS-MAILIST] Alan's thrusters
>
> Alan,
> How is your machining project going, got any pictures?
> Hank
>
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