... optimum and ... I think its too dependant on drag, weight, launch pressure, nozzle size and probably several other things, to have a hard and fast rule. I...
6315
Paul Grosse
pagrosse@...
Jun 1, 2006 1:23 pm
... There's more than one way of doing it... If you fill your bottles in the field by turning them upside down and pouring the water in through the nozzle (as...
6316
Paul Grosse
pagrosse@...
Jun 1, 2006 1:28 pm
... Talking about fat rockets, Coke is doing a promotion with special shperical bottles. Whilst these might not be the best, aerodynamically speaking, they ...
... but ... shperical ... speaking, they ... perhaps in a ... Paul, I came across a similar bottle last year, it wasn't spherical, more of the standard bottle...
6318
Paul Grosse
pagrosse@...
Jun 1, 2006 4:12 pm
... The spherical ones remind me of the liquified gas tanks they had on the Apollo missions. They look as though they are made from a different blank to other ...
... the Apollo ... to other ... blanks that ... Shame they don't come in a bigger size. You could use them as presure resivours on a launcher, or connect 3 or ...
Hi everyone, Since Jon is going to be away for a few days why not post your best times on the board so we can have a quick look, and work out among ourselfs...
deploy using crushed sleeve was my thought as well. i tried to construct vessels like that in my first splicing attempts, for deploy ideas. they are cute...
Hi Pat Not remembering you have posted, so welcome to our group. ... From: "Pat LeBlanc" ... um, my reading of many sims etc favors maybe 20-30% waterfill....
Hi everyone, Just a quick post to say I've finaly finished the pneumatic relase for the my Clarke Launcher. I've added a new video of it in operation at the...
That looks great. But if you want to stay dry then how about adding a longer hose and keep things pneumatic ? That would have been my first thought. After all,...
JJ, That was my first thought, but I would have to run 2 ong pipes from the launcher to the spool valve. One pipe and a long length of sting is easier and...
... From: "Richard" ... My thoughts cxatlly. ..but i didna know it could be used to abort launch too. Even better reason to use a tube instead of a string. ...
um, am i 'sposed to put that link in my sci(ence) folder? or file it in vid enginereering? ringa ding ding What A Hoot! dl ... From: "Russell McMahon" >...
... it in vid enginereering? ringa ding ding ... David, You know what happened the last time I saw a post anout soda and mentos :). Poor cat is still getting...
Richard A cats not big enough to make a mess with 500l blame the Dog :o) Mark ... From: "Richard" <torwind@...> To: <water-rockets@yahoogroups.com> ...
Mark, You should have seen the last mess the cat got balmed for :) Took me a week to get the mess of the cieling Richard ... file ... lots ... buy ... time :)...
Hi everyone, Since it's a bank holiday weekend in Ireland I thought I'd nock up a new pipe wrocket for then fun of it, and to keep myself cool at launch time. ...
Anyone playing with Glaceau SmartWater 1 liter bottles. They stand 28.9 cm (11 3/8 in) and are 7.3 cm (2 7/8 in) in diameter. No ridges or patterns. Slight...
Tim, I haven't used them myself because the Smartwater bottles are not made for carbonated water and thus are not designed to hold the same type of pressure....
I've built some pretty fun rockets with these and their 2-liter cousins. The only issue is that the concave bottom tends to "pop" up as you increase the PSI....
the stuff isn't carbonated, so the pressure is minimal. The bottles are fairly light weight and slim. Anyone ever test the burst pressure of these babies? jim...
Hi All I have made some of these pipe rockets except the pipe (which my sister found in a skip) is about 15mm diameter. I have found that these can be made...
Hi Mark, interesting idea, but how far can you take it before you end up with a week pipe. Must try shaving down some of my 40mm to see what I can get it's ...
... From: "Tim Sumrall" ... Hi Tim Been using them for a long time. They are thick enough but the shape of the bottom is weak and so some fail at about...
Thanks for the replies. I've got 4 to blow up :) Dl, you mentioned Dr Peppper. Which one, the tall neck? They are getting rare around here but I think I have...
Hi I havnt really done a pressure test but I know that mine still hold 130psi as thats as far as my stirrup pum will go up to. Id be interested if you did a...
Mark, If i get the chance this weekend I'll see if I can get a couple of presure tests done. It would be interesting to see how this stuff fails, I would also...
