[PSUBS-MAILIST] motor pod

[Alan via Personal_Submersibles]

Hi Brian,
I am on Koh Tao Island, Thailand, staying at this place...
http://www.montalayresort-kohtao.com
US $20- per night, has it's own padi dive centre & restaurant. Even has Wifi that works.
The snorkelling in the bay is like being in a tropical fish tank.
I think I have discovered Shangri-La. ( for divers anyway )
   If you followed the rules & used the right primers & coatings you would be OK.
But that can be a lot of trouble for a small item. It would possibly mean buying paint guns 
that can handle epoxy.
Alan

 

Sent from my iPad

> On 7/09/2014, at 11:47 am, Brian Cox via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> Hi Alan,   Are you still in Thailand ?  or Indonesia some place ? 
>  
>         I think those configurations presuppose that the material is noncorrosive, like anodized aluminum or stainless,  I was wanting to do some type of piston seal until I realized it would just rust without some sort of overlay or something.  I don't think an epoxy coating would work for very long in that situation.
>  
> Brian
>  
>  
> --- personal_submersibles at psubs.org wrote:
> 
> From: Alan via Personal_Submersibles <personal_submersibles at psubs.org>
> To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>
> Subject: Re: [PSUBS-MAILIST] motor pod
> Date: Sun, 7 Sep 2014 10:48:12 +0700
> 
> Brian,
> this could be the site I mentioned. A lot you can glean if you look around it.
> http://prevco.com/products/subsea-housings/seal-configuration
> Alan
> 
> Sent from my iPad
> 
> On 7/09/2014, at 6:50 am, Alan via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> Hi Brian,
> I was loooking for a very good link I posted on psubs about sealing canisters; by a firm
> that specialised in building them. Can't find. Only have my Ipad & it's bookmarked on my laptop.
> Someone else may have book marked it. It gave various sealing options & gave the pros & cons.
> Here is one of many articles.
> http://cornerstonerobotics.org/curriculum/lessons_year3/eriii7_pressure_hulls_canisters2.pdf
> This one is based on the book "underwater robotics, science design & fabrication".
> If you Google sealing a canister or home built canister you may find a few designs to choose from.
> Alan
> 
> Sent from my iPad
> 
> On 7/09/2014, at 5:57 am, Brian Cox via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> I*'m working on designing my motor pods.  Where I'm at right now is a 10" diameter pipe with hemispheres on each end, the hemisphere with the motor shaft coming thru will be welded on but the other one will basically be like a small hatch with an o ring on the hemisphere side.  And instead of a hinge I'll have a bolt in the center ( with o ring) to secure it down.  I guess I'll need to have some sort of finish ( like stainless) where the hemi "hatch" mates to the pipe, and machine a o ring groove.  I will have to add some small flange to those edges since the pipe is only .365 thick.  I would like the option of either having the pod oil filled or dry .   For all the Kittridge folks out there, is this basically how your motor pods are sealed?
>  
>  Thanks,  Brian
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