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Re: [PSUBS-MAILIST] oil compensating

I got your vast knowledge bank, buddy.

As to bellows, it depends on the configuration. Truthfully, if the hard cans are in good shape, I'd replace the seals and O-rings and run them as designed. The problem with big or biggish motors is turbulence. There will be a lot of drag in there. The only solution is to cast the rotor in thin epoxy and machine it to the windings.

The question is why.

If what you have works, why fix it? Hyco ran compensated motors because they started out deep and worked backwards. But they started out with wet designs and got them nearly bullet proof over the years. Perry, on the other hand, built hard cans and ran their motors dry. They started shallow and went deeper, so could expand on what they had.

Is there a nasty history with those units you have?

Vance





-----Original Message-----
From: Brian V. Ryder <brian@subatlantic.com>
To: personal_submersibles@psubs.org
Sent: Sun, May 23, 2010 6:29 pm
Subject: RE: [PSUBS-MAILIST] oil compensating

Vance Thank you for the info, I was going to make a simple bellow with that vinyl tubing, or that was my first thought then if there was a leak I could see it in the tubing
At least the sea water will not ruin the motor if its full of oil or less chance of it, do you have any ideas for bellows in that vast knowledge bank of yours,
 
Thanks again
Brian V. Ryder
brian@subatlantic.com
 
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From: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org] On Behalf Of vbra676539@aol.com
Sent: Sunday, May 23, 2010 6:02 PM
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] oil compensating
 
What if you flood a thruster? Sea water will migrate to find the lowest point(s). I'd do them separate. In my experience, that isolates problems without causing any.
Vance
 
-----Original Message-----
From: Emile van Essen <emile@airesearch.nl>
To: personal_submersibles@psubs.org
Sent: Sun, May 23, 2010 4:40 pm
Subject: RE: [PSUBS-MAILIST] oil compensating
Brian,
 
Together okay, but make the bellow not too small. Count for 5 to 10% volume
chance.
 
Emile
 
-----Oorspronkelijk bericht-----
Van: owner-personal_submersibles@psubs.org
[mailto:owner-personal_submersibles@psubs.org] Namens Brian V. Ryder
Verzonden: zondag 23 mei 2010 3:33
Aan: personal_submersibles@psubs.org
Onderwerp: RE: [PSUBS-MAILIST] oil compensating
 
And yet again one more question oil filled should I plum them all together
and put a small bellow so there also pressure compensated? These are all
questions running thru my head 
 
Brian V. Ryder
brian@subatlantic.com
 
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for the sole use of the intended recipient(s) and may contain confidential
and privileged information or otherwise be protected by law. Any
unauthorized review, use, disclosure or distribution is prohibited. If you
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and destroy all copies of the original message. 
 
 
-----Original Message-----
From: owner-personal_submersibles@psubs.org
[mailto:owner-personal_submersibles@psubs.org] On Behalf Of Brian V. Ryder
Sent: Saturday, May 22, 2010 9:07 PM
To: personal_submersibles@psubs.org
Subject: RE: [PSUBS-MAILIST] oil compensating
 
Hello all
I have a question< I am reassembling my motors and contemplating oil
compensating them, there 4 hp 2900 RPM 36 volt DC and on the back of the
motor is the reversing solenoids 4 of them, no I understand from reading
that WD40 works great, what do I have to do to oil compensate them and will
the solenoids work there just a single throw 12volt solenoid like ones found
on a early model ford, I don't think the rmp loss will be an issue, when I
bench tested it today it spun up and blew the motor control manual all over
the deck all 68 pages, any thoughts would greatly be appreciated  
thanks
Brian V. Ryder
brian@subatlantic.com
 
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and destroy all copies of the original message. 
 
 
 
 
 
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