DIY BP - The Kluge

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After many more hours of work than I had anticipated, the reasons I did this are just not as clear as they were when I started. I know it wasn't just to save the cost of buying a backplate. That would not have been worth it. But the board had told me that the DiveRite travel wing was not designed to attach to a standard BP. So for reasons involving cost (vs. the Halcyon 27), pull dump for my air2, and ability to back off to a transpac if I don't like it, I decided to turn one of those pieces of 1/4 inch T6 aluminum plate sitting in my garage into a backplate made for single tank use with the DR travel wing.

So far, the result has only been on its maiden voyage in a pool (high 40's pretty tough on this warm water wimp). I only did a couple laps since 6 feet wasn't deep enough to block out my buddy/wife's laughter. But performance was encouraging enough that I will probably have to try the local lake (high 50's should be damn near toasty) this weekend.

With any luck, pictures are attached. Except for the holes I added to attach the lift bag, the 1/4 inch holes were already in the original stock I was recycling and so I did what I could to incorpwerate them in the design. STA were made out of 2" by 2.5" pieces of 1/4 inch Al to provide standoff for the wing and 1/2 inch wide strips to secure the tank. These were drilled and tapped and attached with SS screws. Cutting was done with circular saw, jig saw and power drill. I got a friend in a machine shop to do the bend for me. I tried to bend some of that stock to make STAs which resulted in plan B.
 
Some members may find this URL to be interesting especially since we are talking about invention here:

http://www.diverite.com/products/history/backplate.htm

It does back up one of my contentions, that the metal plate thingie ("MPT") was invented to deal with the problem of mounting doubles. Too bad I had put the word in the URL, otherwise it would not work.
 
leadweight once bubbled...
Some members may find this URL to be interesting especially since we are talking about invention here:

http://www.diverite.com/products/history/backplate.htm

It does back up one of my contentions, that the metal plate thingie ("MPT") was invented to deal with the problem of mounting doubles. Too bad I had put the word in the URL, otherwise it would not work.

Interesting link. Thanks for putting it up.

I don't believe that anyone disputes that the BP was originally developed for doubles. However, that doesn't mean that it is inappropriate for singles. In addition to the increased comfort, the BP puts weight directly in vertical line with the largest source of lift (the lungs and the wing). This assists with trim.
 
awap once bubbled...
After many more hours of work than I had anticipated, the reasons I did this are just not as clear as they were when I started

Best I can tell from the photos, looks like it will work fine. I would change the crotch strap to 2" and maybe add some perimeter holes, but looks good.

You might want to check with someone to see if the SS screw threaded into alum will give you a problem in saltwater. Galvanic action between dissimiliar metals can be destructive, but I'm not sure on your particular combination.

Phil
 
leadweight once bubbled...
Too bad I had put the word in the URL, otherwise it would not work.
Now why is it that you have such a strong aversion to even typing the word "backplate" in a URL??? Hmmmmm????

BTW... isn't it interesting that while the backplate was originally developed for doubles diving it has proven to be the best means of using a single tank as well... how fortuitous!
 
Uncle Pug once bubbled...

Now why is it that you have such a strong aversion to even typing the word "backplate" in a URL??? Hmmmmm????

BTW... isn't it interesting that while the backplate was originally developed for doubles diving it has proven to be the best means of using a single tank as well... how fortuitous!


Singles? Hmmmmmm???
Gonna keep my TP2 guys no mater what you say.
Its a metal plate thingie, UP.
 
Uncle Pug once bubbled...

Now why is it that you have such a strong aversion to even typing the word "backplate" in a URL??? Hmmmmm????

BTW... isn't it interesting that while the backplate was originally developed for doubles diving it has proven to be the best means of using a single tank as well... how fortuitous!

Hmmm. Is this what's called "hijacking a thread" :confused:

Just curious :D

Phil
 
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