[PSUBS-MAILIST] glueing aluminum

[Douglas Suhr via Personal_Submersibles]

I took a flashlight out to the trailer tonight, knowing that I'd
forget tomorrow! The little placard reads, 'panels attached with 3M
VHB bonding systems.' It's a Carmate brand trailer, btw. Good luck on
the gluing Hank. ~ Doug S.

On 12/22/17, Alec Smyth via Personal_Submersibles
<personal_submersibles at psubs.org> wrote:
> Hi Alan,
>
> So far I've been anodizing almost everything in what the anodizer calls
> "natural" finish. Sorry, I can't recall what it is in more technical terms
> but it was their recommendation for salt water and I figure someone who
> anodizes all day long knows more about it than I do. When they first
> described it to me it sounded aesthetically iffy, because they called it a
> slightly greenish gray. However, I actually really like it. It doesn't look
> like anodized aluminum to me, it looks like some sort of unknown metal.
> Cheap titanium maybe! But again, I didn't pick it for the looks.
>
> Photos coming in maybe a week or two...
>
>
> Best,
> Alec
>
> On Fri, Dec 22, 2017 at 9:43 PM, Alan via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
>> Alec,
>> I am interested in the photos when you take them.
>> I have a valve design based on Vance's but operated with solenoids.
>> However am open to alternatives.
>> What sort of anodising? I had my lights marine anodised but will go to
>> hard anodising next as they can scratch relatively easy. Could however
>> be the anodiser, I am not experienced enough to know!
>> Alan
>>
>> Sent from my iPad
>>
>> On 23/12/2017, at 3:27 PM, hank pronk via Personal_Submersibles <
>> personal_submersibles at psubs.org> wrote:
>>
>> Wow!!! that will go down like a rock, what drives them?
>> Hank
>>
>> On Friday, December 22, 2017, 6:36:20 PM MST, Alec Smyth via
>> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>>
>>
>> Did you mean to say "ballast tank?" Working on it! Just this evening I
>> finished making a set of five "mushroom" valves - four for the boat and
>> one
>> spare. I've been testing them by installing them in the bottom of a
>> bucket
>> and using them to dump the water. Monday I'll take them to be anodized,
>> and
>> when I get them back will take photos and post something on the projects
>> page. They're a Hugh Fulton design and I have to say I'm impressed, he
>> did
>> an absolutely amazing job. The root of Shackleton's problems was water
>> blocking in the MBT vent lines, which turns out to be a hard problem to
>> solve with the raft configuration MBTs because the lines have a lot of
>> horizontal ground to cover. Since mushroom valves use no vent line, there
>> can't be water blocking and I'm hoping they're the solution. Next up, I'm
>> going to go into calculations and design mode and make new MBTs that
>> leverage these valves. It'll be interesting diving with these, the sub
>> should submerge in seconds. It's four valves that are three inches in
>> diameter each.
>>
>> Best,
>> Alec
>>
>> On Fri, Dec 22, 2017 at 7:35 PM, hank pronk via Personal_Submersibles <
>> personal_submersibles at psubs.org> wrote:
>>
>> Alec,
>> My research so far shows that aerospace parts are glued also.  I am sure
>> the Lotus folks are pretty closed lipped about how they do it.  I will do
>> some testing, just checking with the group to save some time and
>> headache.
>> What are you using for a ballast an now?  or is it a surprise.
>> Hank
>>
>> On Friday, December 22, 2017, 5:29:20 PM MST, Alec Smyth via
>> Personal_Submersibles <personal_submersibles at psubs. org
>> <personal_submersibles at psubs.org>> wrote:
>>
>>
>> Lotus Cars famously have done that, introducing bonded aluminum chassis
>> with the Elise and continuing it on subsequent models. The reason is that
>> welding weakens the material, so if it were welded they would need to
>> increase the amount of material and it would eat up the weight savings.
>> Problem is, I don't know the specifics of the glue they use nor the
>> process.
>>
>> Best,
>> Alec
>>
>> On Fri, Dec 22, 2017 at 6:57 PM, hank pronk via Personal_Submersibles
>> <personal_submersibles at psubs.
>> org <personal_submersibles at psubs.org>> wrote:
>>
>> Hi All,
>> I have an idea that requires glueing aluminum plates together.  Has
>> anyone
>> tried this?  any success?
>> Hank
>>
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