how to use Bike tubing instead of LRT

Build a homemade water gun or water balloon launcher and tell us about it.
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Killi101
Posts: 89
Joined: Sun May 30, 2010 11:30 pm

Re: how to use Bike tubing instead of LRT

Post by Killi101 » Sat Oct 30, 2010 1:50 pm

ive smoothed that candle and it is really perfect, it has an id of 1/2 now and its ready to use :D

EDIT: im am making it right now and it seems to be going very well pics soon!!!

EDIT2: it is finished, a long night indeed. i had to paint on the remaining liquid as parts got scrapped off and it wasnt looking good. painting it got the remaining cracks out but it left a VERY uneven surface here is progress:
Image
After a few dips
Image
Getting thicker
Image
just finished painting it
Image
Finished, dry product. sadly the candle wouldnt come out normally so i had to break it then squeeze parts out.
Stats:
ID: a bit more than 1/2in
OD:~1in outerwall is uneven
Wall thickness:~1/4in also uneven from outside
Expansion :? dont know yet i tried putting it on the sink, on low pressure and it slightly expanded but water came out from the top even if i held it...so i think its tough
Time taken, 4-5hrs
Length:9.5in
Last edited by Killi101 on Sun Oct 31, 2010 10:25 am, edited 1 time in total.
Water:
dont like drinking much
like to throw it at people

User avatar
Killi101
Posts: 89
Joined: Sun May 30, 2010 11:30 pm

Re: how to use Bike tubing instead of LRT

Post by Killi101 » Sun Oct 31, 2010 2:52 pm

it popped. it was uneven in expansion and only the front was saved, about 6inches
Water:
dont like drinking much
like to throw it at people

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-G-JiV-
Posts: 350
Joined: Sat Oct 09, 2010 8:10 pm

Re: how to use Bike tubing instead of LRT

Post by -G-JiV- » Sun Oct 31, 2010 3:36 pm

hm...I wished you luck, promised! sorry for you...Just try again, put it into a small pipe, just a bit thicker(10-20 mm in diameter), and softly fill in water, so it expand slowly and controlled. If there is a risk of poping, stop.

Good luck again :)

Head up, it is rare that things work at first try, I know from my experience... :)
A gunner has to do what his Soaker requires...

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Killi101
Posts: 89
Joined: Sun May 30, 2010 11:30 pm

Re: how to use Bike tubing instead of LRT

Post by Killi101 » Sun Oct 31, 2010 4:04 pm

to test it i used my aph, i pumped it 1 by 1 and it was filled with air not water
Water:
dont like drinking much
like to throw it at people

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-G-JiV-
Posts: 350
Joined: Sat Oct 09, 2010 8:10 pm

Re: how to use Bike tubing instead of LRT

Post by -G-JiV- » Sun Oct 31, 2010 5:37 pm

Hm..I should have told you to use water not air...happened to me too^^

If you use air there is a big problem compared to water: The air put in is compressed the more the bladder expand. It works great too but when you go over the "critical" state, that is when the latex is overexpanded and for further expanding less power is needed then before, the compressed air still gives pressure on the latex, although you do not put in air anymore. The compressed air will make pop the latex, when you go over the critical point, because air also expand...
If you use water, expanding will be stopped when you stop pumping in water. Therefore you should have better used water for testing...sorry, I should have told you this, but I thought you use water...

Good luck at your second try :)
A gunner has to do what his Soaker requires...

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Killi101
Posts: 89
Joined: Sun May 30, 2010 11:30 pm

Re: how to use Bike tubing instead of LRT

Post by Killi101 » Sun Oct 31, 2010 5:39 pm

its still the first... ok for my second try im going to melt the candle and make a mould.,..

EDIT: im going to try again, i will buy some plastersine, and mould that somehow and simply pour
Last edited by Killi101 on Sun Nov 07, 2010 12:11 pm, edited 1 time in total.
Water:
dont like drinking much
like to throw it at people

User avatar
Killi101
Posts: 89
Joined: Sun May 30, 2010 11:30 pm

Re: how to use Bike tubing instead of LRT

Post by Killi101 » Sun Nov 07, 2010 7:58 pm

Ive made the mould, works well, hasnt dropped or leaked so far, but it hasnt dried yet so i cant be sure ill bring pics tomorrow

1 day later, still drying...
3 days later, still drying but becoming more viscous...
4 days later, same thing
5 days later, same thing
6 days later, same thing

Oh yeah btw i bought a check valve for the bpk unit, it was only £1.75!!! and it was 22mm!!!!!!

7 days later, parts have dried but not enough
2 weeks later: the whole thing failed, it leaked on the floor and died, i made another mould from my APH pump. which should take the heat, im starting to doubt the use of a mould
Last edited by Killi101 on Sat Nov 20, 2010 5:49 pm, edited 1 time in total.
Water:
dont like drinking much
like to throw it at people

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