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 Author  Topic: MK. XIII TORPEDO IGNITION
Steve Tuhy

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Post a Reply To This Topic    Reply With Quotes     Edit Message     View Profile of Steve Tuhy   Send Email To Steve Tuhy Posted on: Mar 27, 2011 - 2:14pm
GARTH;
THE FLASH PROBLEM WAS ATRIBUTED TO THE BLACKPOWDER CHARGE USED TO EXPELL THE MARK 8 TORPEDOS FROM THEIR TUBE. THE CHARGE LOOKED LIKE THE BASE OF A 5 INCH SHELL CUT OFF JUST LONG ENOUGH TO FIT INTO THE BREECH ABOVE THE TUBE. IF THE CHARGE WASN'T SET OFF ELECTRICALLY BY THE SKIPPER, A TORPEDOMAN WOULD WHACK THE INITIATOR HEAD WITH A WOODEN MALLET. SOMETIMES THE CHARGE WOULD SET THE GREASE INSIDE THE TUBE ON FIRE. SOME CREWS WOULD PUT A CANVAS CURTAIN OVER THE END OF THE TUBE TO CUT DOWN ON THE FLASH.


Steve Tuhy

Total Posts: 114 | Joined: Oct 17, 2006 - 5:41am | IP Logged

Jeff D

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Post a Reply To This Topic    Reply With Quotes     Edit Message     View Profile of Jeff D   Send Email To Jeff D Posted on: Mar 27, 2011 - 2:20pm
Here's a classroom drawing of an igniter done by Master Chief Jack Duncan, retired, who served as torpedoman on PT 103 from 1943 to 1944. Jack also served on PT 62 and PT 318:






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Steve Tuhy

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Post a Reply To This Topic    Reply With Quotes     Edit Message     View Profile of Steve Tuhy   Send Email To Steve Tuhy Posted on: Mar 27, 2011 - 2:50pm
GOOD WORK JEFF;
ACCORDING TO MASTER CHIEF DUNCAN'S DRAWING THE BLACKPOWDER/CELLULOSE, MAGNESIUM POWDER AND PARAFIN MIXTURE WOULD HAVE GIVEN VERY HOT AND RELATIVELY LONG LASTING SPARKS.
I'M AMAZED AT THE AMOUNT OF ENGINEERING AND GENIUS THAT WENT INTO THESE TORPEDOS.

Steve Tuhy

Total Posts: 114 | Joined: Oct 17, 2006 - 5:41am | IP Logged

TGConnelly

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Post a Reply To This Topic    Reply With Quotes     Edit Message   Posted on: Mar 28, 2011 - 6:15am
Steve,

Do me a favor please?

Email me off-site, the email that is on your "profile" here is not valid ...

I would like to ask you something about something unrelated to this topic and which I'd like to not talk about here.

Thank you,

Garth


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Jeff D

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Post a Reply To This Topic    Reply With Quotes     Edit Message     View Profile of Jeff D   Send Email To Jeff D Posted on: Mar 28, 2011 - 8:12am
Thanks Steve, I think they are amazing pieces of work too. I really enjoy the photos in the manuals of the inner workings, especially the early torpedos.

If interested, Jack sent me 7 other torpedo class drawings that can be downloaded here:
http://www.pt103.com/images/asst/TorpedoDrawingsJackDuncan.zip



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Steve Tuhy

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Post a Reply To This Topic    Reply With Quotes     Edit Message     View Profile of Steve Tuhy   Send Email To Steve Tuhy Posted on: Mar 28, 2011 - 10:17am
GARTH;
PROFILE HAS BEEN CORRECTED AND I CORRECTED YOUR E-MAIL ADDRESS ON MY END.

JEFF;
THANKS FOR THE INFO. THESE DRAWINGS CLEAR AWAY THE TECHNICAL MUD FOUND IN MANUALS.

Steve Tuhy

Total Posts: 114 | Joined: Oct 17, 2006 - 5:41am | IP Logged

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