NightHawkInLight Posted April 11, 2013 Share Posted April 11, 2013 Maybe you all have seen this before since the video is a few years old, but this blew me away: I've seen two liter science fair sorts of water rockets before, but I had no idea they could be made with the kind of thrust to lift a second stage! That makes me want to build a two stage water rocket and see how far I could push it... Link to comment Share on other sites More sharing options...
JFeve81 Posted April 11, 2013 Share Posted April 11, 2013 2 stages? Make the first 3 stage. Link to comment Share on other sites More sharing options...
Bobosan Posted April 11, 2013 Share Posted April 11, 2013 Nope, hadn't seen it. Pretty neat. Link to comment Share on other sites More sharing options...
JFeve81 Posted April 11, 2013 Share Posted April 11, 2013 How is the second stage on one of these "popped". Really long string? Link to comment Share on other sites More sharing options...
NightHawkInLight Posted April 11, 2013 Author Share Posted April 11, 2013 How is the second stage on one of these "popped". Really long string?I haven't read into it enough yet to find out, but the guy has a pretty substantial website with details for various mechanisms he uses: http://www.aircommandrockets.com/day90.htm Link to comment Share on other sites More sharing options...
Bobosan Posted April 11, 2013 Share Posted April 11, 2013 Wow...a friggin Gardenia water hose coupler using gravity lock in this slick setup. This guy looks at a BIC pen in more ways than the obvious! Link to comment Share on other sites More sharing options...
leedrill Posted April 11, 2013 Share Posted April 11, 2013 very impressive needs to lift atleast a 3 inch ball shell though so yeah 3 stage i think would be the go haha Link to comment Share on other sites More sharing options...
AirCowPeacock Posted April 12, 2013 Share Posted April 12, 2013 Would love to see water rockets shoot of shells! Link to comment Share on other sites More sharing options...
guntoteninfadel Posted April 25, 2013 Share Posted April 25, 2013 Really got into water rockets prior to pyro, thought it was safer with small kids, and heck, who doesnt like to play with the water hose in the summer. We ended up making rockets out of 8` florescent tube covers with 2 liter "bottle tops" glued into place. You can pressurize these well over 150psi and with the correct set up can obtain +1000` altitude. Mine never went that high but it really really is something to behold. Without a ready source of flame getting these things to deploy a parachute is some kind of exercise in almost complete futility! Buried plenty of nose cones all the while yelling "run run its coming down"! Link to comment Share on other sites More sharing options...
psyco_1322 Posted April 25, 2013 Share Posted April 25, 2013 That's awesome, even though my 4oz whistle could go that high, it's still cool. When I went to a HPR shoot, it always amazed me how close to the launch area rockets usually landed. With the parachutes those things have, and the altitude, I was surprised they weren't coming down miles away. Link to comment Share on other sites More sharing options...
AirCowPeacock Posted April 25, 2013 Share Posted April 25, 2013 That's because rockets fly into the wind, despite logic. Link to comment Share on other sites More sharing options...
dmbriske Posted May 5, 2013 Share Posted May 5, 2013 That's because rockets fly into the wind, despite logic.The logic is actually sound... X and Y access are independent of one another as a rocket is fired directly up fighting gravitys pull (y) the force of wind (x) pushing on the side of a rocket will affect the lightest part of the rocket first which is the bottom where the fuel is either burned or in the case of something like a water rocket is expelled leaving the weight at the top causing it to be pushed into the wind by the wind. Link to comment Share on other sites More sharing options...
AirCowPeacock Posted May 5, 2013 Share Posted May 5, 2013 Yes, I understand it, but it *seems* contrary to logic at first. Link to comment Share on other sites More sharing options...
dmbriske Posted May 6, 2013 Share Posted May 6, 2013 You're right about that, it seems to go against what we know, I just wanted to leave a quick explination as to the why for folks who may not know. Link to comment Share on other sites More sharing options...
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