my 3 litre rocket

[danb]

heres my latest rocket N2 finally got it to be a reliable flyer fins work very well keeps it very straight in flight it has a side parachute deployment system with a tomi timer with a modified pushchair parasol as a parachute it has a 7mm nozzle, it had 4 sucessful launches today parachute deployed 3 out of 4 so was very happy with the resultso it sustained minimal damage which makes a change!!! hahaha feel free to comment all advise is appreciated a video of 1 of the launches from today will be posted

danb

[U.S. Water Rockets1]

How have you spliced those bottles together? It looks like you have glued bottle caps unto the bottom of each bottle. Is that the only connection point of the joints?

[danb]

i havent spliced the bottles yet im not that experianced!!! hahaha i have connected them together with robinson couplers then once they have been pressure tested as a secondary precaution i use sikaflex to strenghen and seal round the cap and bottom of bottle i have found this to work very well, only things to change to the rocket is to shed a little weight and to install some foam behind the parachute for a quicker deployment, i need to fit a altimeter to get some height info as yesterday it was hard to judge how high it was going i estimate 100ft+, the launch pressure was 100 psi and i was using a 7mm nozzle if i upped the pressure and nozzle size would you see better results? im using jet foam(baby bubble bath) if any one would advise that would be great

danb