insutama Posted February 21, 2015 Share Posted February 21, 2015 I have been making small 1/16" nozzles on my 3/8th bottle rockets but im having issues getting the fuse in now that i have ran out of 2mm fuse so im just wondering if i make my nozzle size 1/8" would that slow my rocket down and would it not go as high ? or would it affect it much ? Link to comment Share on other sites More sharing options...
calebkessinger Posted February 21, 2015 Share Posted February 21, 2015 are they end burners? My 5/16th tooling with a 1& 7/8 spindle has a .150 opening I think.. I don't have the drawing in front of me. They fly great with no nozzle. Link to comment Share on other sites More sharing options...
insutama Posted February 21, 2015 Author Share Posted February 21, 2015 ya end burners Link to comment Share on other sites More sharing options...
calebkessinger Posted February 21, 2015 Share Posted February 21, 2015 you can get away with a little bigger hole as long as you drill a core, just drill one out and try it. try a baby 1/2 in core up into the fuel and see what happens. 1 Link to comment Share on other sites More sharing options...
insutama Posted February 21, 2015 Author Share Posted February 21, 2015 okay cool ill try this thanks would a 1/8th core work ? Link to comment Share on other sites More sharing options...
calebkessinger Posted February 22, 2015 Share Posted February 22, 2015 Yeah, 1/8 in bit will work fine. but to get the thrust you need you have to drill deeper exposing more fuel grain to fire, it will jump off the pad and then lighten up on the thrust, when you get it too deep it will cato. Link to comment Share on other sites More sharing options...
insutama Posted February 22, 2015 Author Share Posted February 22, 2015 perfect ill try this Link to comment Share on other sites More sharing options...
dagabu Posted February 23, 2015 Share Posted February 23, 2015 3/32" is as big as you want to go with a 3/8" endburner, 1/8" is for 1/2" rockets. Link to comment Share on other sites More sharing options...
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