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My Information

Member Title:
Pyro Forum Regular
Age:
23 years old
Birthday:
November 14, 1988
Gender:
Male Male
Location:
Manchester
Interests:
Errm let me see, maybe pyro??????

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Posts I've Made

  1. In Topic: Mortar tube life span project?

    04 February 2012 - 01:44 PM

    View PostMalcolm Smith, on 04 February 2012 - 12:51 AM, said:

    How many wash out the residues as I do?

    I've had several fibreglass mortars leaking water from porus areas after less than 20 shots.

    I've seen crazing and delamination

    Yes, they are lighter than HDPE, but look at their wall thickness.

    This from Vulcan:- The usage life of mortar glass mortar tubes depend on how they are maintained and used, and how often they are being used. They can last a few years but you do need to keep a regular check on them to make sure they are still in good condition. Usage can range from average of 12 times to over 20 times.

    And if the manufacturers specify 12 - 20 shots, what defence will you be able to offer to the H&SE in the event of an accident if you have not serial numbered your tubes and logged their use?


    I have no faith in the longevity of this semi-brittle material after exposure to the percussive extension force of shell lifts, especially in the larger sizes.





    I totally agree with you malcome, i would myself prefer HDPE not only because its allot more durable but also in the event on a flower put it will not come apart into lots of smaller projectiles, it will remain as mostly 1 object although torn open ect.... its just the weight issue, when you consider not just a couple of racks but on larger shows where you may have 50 racks it becomes and issue transporting the weight.



    Jay

  2. In Topic: Mortar tube life span project?

    02 February 2012 - 08:40 AM

    View PostKarl, on 01 February 2012 - 04:24 PM, said:

    It's one of those questions with a million variables all which would differ the outcome.

    I know what the tell-tale sign that cardboard tubes need replacing but what about GRP?



    I asked our GRP expert here at work what would be a good way to get an idea of the condition of the tube. He reckons simply look for cracking or " spider webbing", basically white lines appearing in the tube, thats probably the easiest way to check however obviously its not so easy to to see this on the inner wall covered in black residue!

    Jay

  3. In Topic: Mortar tube life span project?

    31 January 2012 - 07:01 PM

    I thought they would last a while but you are definatley right, massivly varies on how much care has been taken of them and where they have been stored.

  4. In Topic: Mortar tube life span project?

    31 January 2012 - 01:07 PM

    View Posta_bab, on 31 January 2012 - 12:07 PM, said:

    Depending on the cardboard quality, 10-100 shells are said to be the max recomended number for a cardboard mortar. As the time passes, some of the paper unwraps inside. This could be a problem (there's a case of a truck full of cardboard mortars, that caught fire because of a glowing ember + air draft cased by the truck moving)

    Better invest in some HDPE mortars as they will last much longer.


    Sorry I meant GRP tubes, should have made it clearer oops. Ime not a fan of card tubes anyhow and HDPE is abit on the heavy side.

    Jay

  5. In Topic: My first project?

    15 January 2012 - 04:16 PM

    I jumped in feet first with building shells, afterall that was why i took an interest in this hobby, thyre not too difficult and aslong as you dont cut corners theres no reason why you should be successfull from the get go. I must admit i now dont bother with shells they take tooooooooo long to make from start to finish so nice fountains do me and the odd flash powder salute rocket.

    If i was to do it all again the most important thing for me is definanlty dont cut corners, that goes for taking enough to to dry stars, to priming them and pasting a shell, also make sure you use the right time fuse for the shells and use the correct methods.

    Also as PDC said use a reputable supplier for all your chems, Ive only ever used cooperman as i see no need to look elsewhere so he should be you number 1 chems contact, also hes a sound and knowledgable guy who will happily share any advice he can give you.


    As always just be safe and discreet, it seems there lots of negative people trolling these forums and i for one dont like it, research it and do it is all i say. Sure theres laws but stick to 100grams at any 1 time and you can argue the case IF it ever came to it. No one will ask questions if you dont get anyones back up so no letting off large salutes near peoples houses as ive heard of people doing !



    Jay

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Comments

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  1. Photo

    SmokingEmber 

    08 Sep 2011 - 19:21
    Thanks Tess! I struggle to find a suitable site for testing here!, Kind Regards.
  2. Photo

    tess 

    08 Oct 2010 - 06:45
    Safety first, fun later. As a one enjoy the pryo, fun first, safety later.
    tess
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