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Dave's Alfa - more photos

Place for general submarine conversation

Postby AntoineL » Thu Sep 25, 2003 11:03 am

As promised :

Image

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Postby Novagator » Thu Sep 25, 2003 11:08 am

Too bad Dave doesn't sell a torpedo kit like that.
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Postby AdriaticSea » Thu Sep 25, 2003 1:52 pm

Hi Antoine,

the photos are simply amazing...I'm really impressed by the mechanical skills of Dave Merriman...realizing a fully functional 1/72 torpedo and a complete 7 tubes launcher unit is a very BIG challenge, and he made it...unbelievable!
My only question is: the launcher must be very heavy in the water, how did Dave balance the buoyancy of the Alfa...in other words, where did he put all the foam?
BES REGARDS MAURO
-Rapidi ed Invisibili-
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Postby KOEZE » Thu Sep 25, 2003 3:22 pm

Now that is one very nice piece of work.

1:72 scale torpedo laucher with scale fish to go with it. I'm VERY impressed. Thanks for sharing those pic Antoine.

EJK
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you get older because you stop playing.
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Postby Casey Thrower » Thu Sep 25, 2003 6:50 pm

AdriaticSea wrote:Hi Antoine,

the photos are simply amazing...I'm really impressed by the mechanical skills of Dave Merriman...realizing a fully functional 1/72 torpedo and a complete 7 tubes launcher unit is a very BIG challenge, and he made it...unbelievable!
My only question is: the launcher must be very heavy in the water, how did Dave balance the buoyancy of the Alfa...in other words, where did he put all the foam?
BES REGARDS MAURO

I think Merriman made a deal with the devil himself. No one can be that multi-talented.
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"Oh Lord, Thy sea is so large and my boat is so small"
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Postby all ahead flank » Thu Sep 25, 2003 7:36 pm

Wow!!!! Great Boat!



One question though... Does the Alfa have enough room for angle keeper and depth control ect? Or is it "stripped" for space for the fish?



:cool:
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Postby AdriaticSea » Fri Sep 26, 2003 7:43 am

Hi All,

I'm giving a closer look to the photos, and, of course, many questions arise about such an incredible launcher.
Okay, Dave can't sell these units and it's right, but, can someone explain to "us poor mortals " how this incredible launcher functions?
Propel is used to send the fish out of the tube, but how can Dave launch 7 torpedoes with only one servo?
BEST REGARDS MAURO




Edited By AdriaticSea on 1064576651
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Postby KOEZE » Fri Sep 26, 2003 8:10 am

Not a direct answer to your question but a possible solution. I have seen a 4 tube launcher somewhere with electric solenoids firing the fish. The guy that built this contraption made an electronic counter that counted how often a receiver went to full deflection (2ms) and related that to the tube to be fired. 2 times full deflection was fire tube two.

If I look very deep into my archive I may find it again of you are interested. Of course with a pic processor it should not be hard to accomplish either.

EJK
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you get older because you stop playing.
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Postby ThorDesign » Fri Sep 26, 2003 8:35 am

The Alfa is a VERY roomy boat. It has more than enough room for the APC & ADC and whatever electronics you choose to install in it.
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Postby TMSmalley » Mon Sep 29, 2003 10:58 am

Image
This is a shot of the demo board Dave had at SubRegatta 2003 to show how it worked. The single servo pulled an escapment mechanism (as in a wind up clock) that fired each fish in sequence.

Quite ingeneous and it did work.
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