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impact torpedoes eg Globe torpedoes


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#1 dave321

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Posted 23 March 2020 - 03:43 PM

has any one actually got the composition the above are supposed to use to work ?

 

pot chlorate with 1%Manganese dioxide            60

Antimony trisulphide                                           30

Aluminium Eckart5413H                                     10

 

used with ~2mm (10#) gravel.

 

strangely it just does not seem that sensitive to impact when thrown ????????? :o


dave

#2 Mumbles

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Posted 28 March 2020 - 03:02 PM

What size of torpedos are you making? Antimony trisulfide sensitizes chlorate more to friction than impact. Maybe they're packed too tight?

I don't have much experience with these, so I'm mostly just thinking aloud. Sulfur may also help to get them a bit more sensitive.
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#3 robbo

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Posted 28 March 2020 - 04:36 PM

Elizabeth over on FW had success, after some effort.  It seemed she was rapidly stifled by some others' comments and I didn't see much more about it.  There was concern (overblown, I think) about safety (liability?) issues.  Pity.  If you've access, contact her.


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#4 robbo

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Posted 28 March 2020 - 04:45 PM

As long as we're on the subject, I've used "adult snaps" as initiators for explosive blowgun darts.  Augmented, of course.  They worked fine and saved me from working with compositions with which I have no experience.  And cheap!  Perhaps the same could be done for your endeavor.



#5 dave321

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Posted 29 March 2020 - 03:13 PM

As long as we're on the subject, I've used "adult snaps" as initiators for explosive blowgun darts.  Augmented, of course.  They worked fine and saved me from working with compositions with which I have no experience.  And cheap!  Perhaps the same could be done for your endeavor.

yes, i know where you are coming from.

 

globe torpedoes were about 1 inch in diameter i believe.

maybe there is a critical size / weight needed and ratio of composition to gravel to get them sufficiently sensitive to work,

anything below which they wont function ?

 

no i do not have access to Fireworking, who is "Elizabeth"


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#6 Mumbles

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Posted 30 March 2020 - 10:25 AM

She's a member here as well.  Might want to try reaching out.  I don't believe she stops by all that regularly.

 

https://www.amateurp...8487-elisabeth/


Just so you guys quit asking, here is the link to the old forum. http://www.xsorbit2....forum/index.cgi

The sky is my canvas, and I have 2,113 pounds of powdered paint in the workshop.

#7 robbo

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Posted 30 March 2020 - 11:34 AM

She's a member here as well.  Might want to try reaching out.  I don't believe she stops by all that regularly.

 

https://www.amateurp...8487-elisabeth/

 

Thanks, you saved me bugging her through FW.



#8 dave321

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Posted 30 March 2020 - 01:39 PM

She's a member here as well.  Might want to try reaching out.  I don't believe she stops by all that regularly.

 

https://www.amateurp...8487-elisabeth/

thanks 

have tried to contact her


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#9 snapper

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Posted 04 April 2020 - 02:13 PM

I thought the old torpedos where made using phosphorus and constructed in water then assembled wet for safety 



#10 dave321

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Posted 04 April 2020 - 03:20 PM

I thought the old torpedos where made using phosphorus and constructed in water then assembled wet for safety the 

the current adult throw downs like mandarin crackers or snap bangers, certainly seem to 

use , i am assuming a chlorate / rp mixture coated onto gravel, and they work well.

but i doubt they are as loud as the original globe torpedo type devices, a good thing 

from a safety point of view.

 

they also have a CE marking


Edited by dave321, 04 April 2020 - 03:21 PM.

dave




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