[PSUBS-MAILIST] Air compensating thrusters

[Alec Smyth via Personal_Submersibles]

Yes. It is extremely low viscosity and before using it, I left snips of the
motor's cables in a little jar of it for some months to make sure the
insulation was not affected.

Thanks,

Alec


On Sun, Jul 27, 2014 at 9:49 AM, Jon Wallace via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

>
> Alec, just for completeness, what oil do you use in your MK's?  Is it
> marvel mystery oil?
>
> Jon
>
>
>
> On 7/26/2014 10:43 PM, Private via Personal_Submersibles wrote:
>
> Alan, honestly you're over-analyzing this one. I would summarize it thus;
> air and oil compensation both work just fine, pick either one.
>
>  I've run Snoopy with both air and oil compensation, using the same
> motors. I could not tell the difference, either in power or even in sound.
> I do agree the motors must in theory lose some efficiency with oil, but it
> was not in the least noticeable to me.
>
>  Personally I prefer oil because the system has no moving parts and
> therefore in my book is simpler and more reliable, but again... both work
> just fine.
>
>  As for all the stuff about dissolving plastics and brushes, I finally
> overhauled the thrusters last year for the first time. All I had to do was
> change the seals and brushes, and I  turned the commutator on the lathe
> because the copper had some wear. These parts had lasted a decade.
>
>
>  Best,
>
>  Alec
>
>
>
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