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meters

Posted: Thu Mar 29, 2007 8:11 pm
by sandman
ok, i have seen many propane meters on this site and if i get ABS i will use one too

but for sleekness i was wondering if it is ok to use flexable pipe in the meter, all i have seen use solid pipe, but thats is kinda not an option for me

Posted: Thu Mar 29, 2007 8:19 pm
by noname
Yes, although it'll be annoying calculating the volume on it, considering it would bend and probably doesn't have an exact ID. Do some experimenting with it.

Posted: Fri Mar 30, 2007 3:57 am
by ArticWolf
I am sure that if you use pressure rated propane tank hose, (keeps ID the same) or gas line for the house (not sure if it pressure rated though) but that might work. If you can make one from black pipe and fittings to put it together you can use the hose to put it on your cannon. It may be clusey with the all metal pipe and the other good stuff, but it makes the cannon look more stafistacated looking. (this is my opinon no cut down intended) Mine is not attached to the cannon it makes mine less bulky.

Posted: Fri Mar 30, 2007 2:29 pm
by sandman
with the setup that i plan to use it will be very odd to have solid pipe on it

to get volume cap one end, fill with water, measure water

Posted: Sat Mar 31, 2007 1:30 am
by ArticWolf
The way that I use mine should work for your idea. I have a shrader valve (IE Valve stem for tires) that is on the double thick part at the back of the cannon. I used an air chuck (like the tire pumps have to fill your tires up) on my metering pipe it makes it completely Separate from the cannon the shrader valve and the air chuck both act like a ball valve. If I got you right you want to measure water with this too? I am just trying to help but not sure if I am on the same idea.

Posted: Sat Mar 31, 2007 8:12 am
by sandman
no no, i would use the water to find the ID so i would know how much to meter

Posted: Sat Mar 31, 2007 12:02 pm
by ArticWolf
Well this might help you, http://www.advancedspuds.com/SpudToolonline.htm I have used it on my cannon. If you know what size the chamber and the barrel is, this will help you find out what size and length the meter pipe is to be and how much propane % (I use 5% but a good one is 4%) to use and the amount of propane pressure to use. A pefect C:B ratio is 1.5:1. Oh I think it tells you the ID of the meter pipe too. I hope I got it right this time :)

Posted: Sat Mar 31, 2007 1:23 pm
by SpudBlaster15
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Posted: Sat Mar 31, 2007 4:01 pm
by sandman
well, i allready did the calculations, i know i need bout .5876 psi in the chamber of propane, so ill use P1V1=P2V2 when i get the hose, to get the pressure in the hose i need

Posted: Sat Mar 31, 2007 4:17 pm
by noname
"i need bout .5876 psi in the chamber of propane"
It's going to be EXTREMELY hard to get that amount in, why not use a smaller meter?

Posted: Sat Mar 31, 2007 4:47 pm
by sandman
but that = 4% propane
i thought that was the best percentage

Posted: Sat Mar 31, 2007 4:54 pm
by hi
it is4% it almost exactly right. i have used hose on all my meters and it works just as well as pipe. just make sure its pressure pipe and that th hose clamps are nice and tight, mine hold about 50 psi before they leak, witch is way to much for propane and way. you can even put a pressure gauge on it.

Posted: Sat Mar 31, 2007 5:50 pm
by noname
Make the meter smaller, and increase the pressure, so you're not trying to meter in .58 psi.

Posted: Sat Mar 31, 2007 6:10 pm
by Freefall
Noname, he's not trying to measure that pressure. He's stating that .58 psi is about 4% of 14.7 psi, and that he needs that much propane in the CHAMBER. To do so, he'll use P1V1 = P2V2 to determine the pressure that he needs in his (much smaller) METER.

Posted: Sat Mar 31, 2007 6:51 pm
by sandman
yes, exactally what he said