[PSUBS-MAILIST] compensating oil

[Alan via Personal_Submersibles]

Hank, Tim,
no not sure what Nuytco used. Would be interesting to find out
what commercial thrusters are recommending for compensation.
Initially I did tests soaking various plastics in WD40 & some other
product that I can't remember. Some of the plastics were going soft
in a matter of minutes. Others took a lot longer. 
In my last motor experiment, the protective sheathing around the wires
where they left the motor had gone soft & tore easily. I think this may
have been a heat shrink tubing that is commonly used. I was using one
of the oils that the industrial chemist had advised. The heat from the motor
possibly doesn't help, & you wouldn't get that with an arm.
I was suspicious that it had dissolved a glue that held my hall sensor board
in place, but this could have been heat. BTW all the magnets are held in
place with glue.
The motor windings have a very thin plastic insulation. And you won't know
what materials are used inside the motor.
A lot of people were using WD40 successfully, but some found problems
with it. 
Cheers Alan


> On 19/11/2018, at 2:46 AM, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> Alan,
> I have not had ann bad effects from WD40 except a clear hose went solid.  If the mystery oil does not do thatI am happy.  I will do a test.
> Hank
> 
> On Sunday, November 18, 2018, 3:10:04 AM MST, Alan via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> 
> Hank,
> you may not do any better with the miracle oil.
> I  spent a lot of time looking for alternatives to WD40 for a low viscosity 
> compensating oil. Talked with 3 different chemists. One specialising in 
> importing exotic oils.
> The low aromatic oils they advised still had a detrimental effect on insulation etc
> in my thrusters. I went with silicone in the end as did Emile. Have two 20
> litre containers of expensive oil sitting in storage.
> Cheers Alan
> 
>> On 18/11/2018, at 10:42 PM, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>> 
>> Brian,
>> I need the oil for my electric arm motors.  Normally I would use WD-40, but the arm uses HP nylon hoses connected a suspension air bag. The hoses will harden up with WD-40 and loose their flexibility.
>> Hank
>> 
>> On Saturday, November 17, 2018, 6:20:06 PM MST, Brian Cox via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>> 
>> 
>> Mineral oil ?   for motors or electronics?  LEDs ?
>> 
>> 
>> 
>> --- personal_submersibles at psubs.org wrote:
>> 
>> From: hank pronk via Personal_Submersibles <personal_submersibles at psubs.org>
>> To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>
>> Subject: [PSUBS-MAILIST] compensating oil
>> Date: Sat, 17 Nov 2018 22:11:17 +0000 (UTC)
>> 
>> Hi All,
>> I need to buy some compensating oil and WD-40 will not work in this case.  I think it was Alec that mentioned Marvel Mystery oil?  It seems there is more than one kind of Marvel Mystery oil.  Is it the MM14R that I need to buy.  I hope so, it is cheap.
>> Hank
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