[PSUBS-MAILIST] eRe: Alan's new motor

[Alan via Personal_Submersibles]

Hank,
I have the wires running out of the motor through the tube that the
oil comes in through. At a point in that line I have a T where the wires
are epoxied & run without the tubing to the through hull, and the tubing
continues on to the oil compensator. The compensator has a low oil
level switch, so there should always be oil in the line.
There is increasing ambient pressure going in to the housing as you 
dive, so not sure how you would relieve that on ascent with some sort
of oil trap! But I am not sure what idea you have.
I am stuck on an Island for 3 weeks looking after a dog & cat then my
other daughter is flying in & stealing my car, so won't be
making any rapid progress on this :(. 
Alan



> On 4/10/2018, at 9:29 AM, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> Alan,
> You can make a oil trap in the compensation tube, its real simple.
> Hank
> 
> On Wednesday, October 3, 2018, 12:32:59 PM MDT, Alan via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> 
> Hank,
> I am hoping I can dial up the over pressure to the point that it
> keeps the oil down. (like blowing in to a straw forcing the liquid out)
> The oil goes in through a clear tube so I can monitor the level.
> I am not confident though; however oil compensation has been
> around for a long time. 
> Unfortunately I can't put a one way valve in the system as the 
> pressure won't be able to escape on ascent.
> Below is the motor in oil without the proppeller.
> Alan
> <image1.JPG>
> 
>> On 4/10/2018, at 1:34 AM, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>> 
>> Alan,
>> I have had similar situation, the oil will still come up the tube.  The over pressure makes no difference, unless there is a piston or diaphragm blocking the oil.
>> Hank
>> 
>> On Wednesday, October 3, 2018, 2:53:29 AM MDT, Alan via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>> 
>> 
>> Hank,
>> yes very patient "lol" as this might not be the final version.
>> I have tested the motor out of the housing in a bucket of oil & established
>> that it could only be run at 30 Amps without overheating. It causes quite 
>> a turbulence running in oil with no prop on due to the open design of a rotating 
>> back section. It will want to force oil out of the housing & up the oil feed tube,
>> but I am hoping the overpressure from my oil compensator will keep the oil
>> in around the motor. 
>> Am learning a lot on each attempt.
>> Alan
>> 
>> 
>> 
>>> On 3/10/2018, at 9:06 PM, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>>> 
>>> Alan, your patience is amazing.  I would be itching to test it before sending it away for anodizing.  
>>> Hank
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>> 
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