Hi Henning, With all this discussion about using CO2 cartridges, my thinking for a possible test of this nozzle design would be something you would attach to...
Hi Mat, While it is feasible to use Robinson couplings that way, one disadvantage of large hole Robinson couplings is that they are difficult to seal with...
Welcome to the forum Ed, Nice rockets and also nice pics of the chisel approach to shaping the Gardena nozzles! :) How difficult was it to produce the nozzles...
Hi Jon, I hadn't thought of not using a coupling at all. Thanks Mat ... construction ... COUPLING! ... blob ... times ... (Sport ... to ... at ... restriction...
Hi George, I see what you mean by the washers fitting between the lobes. I have a small collection of 1.5L bottles sitting here. If I have time this weekend I...
Hi Ed, very nice rockets, the launcher looks great and I like the chisel setup for machining the nozzles. It would sure beat sanding them down to size. Mat ......
Shaping the nozzels this way was very easy. In fact, it would be very easy to go too far because it cuts so smooth. As long as you have a solid surface to...
Hi Ed – Nice Rockets I see you are spending some time with the drill press etc to make a nice launcher. I noticed in one of your photos a threaded rod that...
Trev, I think you are talking about the threaded rod that I use to join the bottles. Its just threaded lamp rod I picked up at the hardware store. It wasnt...
... Hi George! ... for a ... side ... 90 ... To be honest, I think it would be best to focus one one thing at a time. It's hard to figure out which of the two...
Hi Everyone, I haven't had a chance to get to the robinson couplings that I wanted to try this weekend but I did have time to complete the third and final...
Hi Mat, Look at the text just below the last picture: http://wrockets.trib-design.com/index.php?project=nick&page=splicing ;) But you're right, it does work...
Hi Nick, Thanks for the link. Great site by the way, I have just spent a while looking around there is some good advice there. Its good to know that this...
Thanks for the welcome. I an not a born and bred Houstonian, but, I have been living here for the past 7 - 8 years. Seems like the idea place to have a...
Guess What ED – You are correct. I need new glasses mate Heehee From: water-rockets@yahoogroups.com [mailto:water-rockets@yahoogroups.com] On Behalf Of Ed ...
Oh ok. No problem. I wasnt sure which photo you were refering to anyway. I hope to be able to make my own couplings like George does with a lathe. Or maybe...
After many years of avoiding internal o-ring seals, I finally built one. I'm also offering them for sale. http://www.waterrocketpop.com/orders.htm I find...
Perhaps it can be used to create a water/air mixture at the nozzle. With one of the nozzle openings having water and the other having air. This could generate...
... As I understand it, when a fluid (air/co2/water) flows through the nozzle it sucks in air from the an opening in the nozzle. If the fluid is water it will...
Hi Ed I also make my own couplings from ¾” BSP/NPT poly sockets. I use a rethreader tool to change the threads on the bottle. I used to get mine lathed and...
Hello All, Im new to the hobby and wanted to say hi ... My son and I have had fun over the last few weeks building some single bottle water rockets and a ...
Todd, Welcome to the addictive world of hydrostatic testing, rocket simulators, and rocket science. I ran into the same problem and so far I haven't created a...
There's a few different tomy-timers with different gears or something. It's best to use the ones from walking toys or other slowmovers for rockets. The ones...
Trev, The re-threader was a brilliant idea. In fact, I showed it to my brother just the other day and we are considering making one. It would make joining...
I would agree with Christian. I am in the process of finding a good source for tomy timers, and I have went through a few wind up cars, and hopping toys....
I flew my 6L rocket 4 times today with 3 good deploys and one partial failure. It was flown with both a gardena-nozzle and as a open-bore. There's a vid here:...
Hi Ed, There is currently no plan to sell the aluminium couplings. They are way too labor intensive to make by hand. The process would need to be automated and...
Hey Everyone, Without going to programmable chips (AVR/PIC etc) there's also simple electronic timers based on the 555 chips, with variable potentiometers to ...
Hi Henning and Christian, I'm not sure that simply making bubbles at the nozzle will help the rocket produce more thrust. But, it is definitely worth the...
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