jeffrocket55

Passfire is a great site, well worth the admission fee

Do your hemis change size over time?

try making hekis using cellouse fiber mixed with kitter litter in powder form roll out the thickness you want let it fall over a 2 or 3 inch rubber ball work it all the way around the ball.Its easy cheap and fast once you keep doing it I have avid of it

Good to hear... how about plain ol' Bp rockets, you can use the cia method, less worry during ramming and you can get great thrust, a good size core on you 27mm id tube would be 7---> 8 mm, about 3" long

thanks just got my 600 meters from a rcandy small 5 inch tube 27mm ID bp delay got it on my youtube page not bad,mixed in antimony trisulfide to get alot of sparks

sounds dangerous to me, if ever i am loadind a rocket with KCL04 i only press it , and behind a 10mm polycarbonate screen,( with my eyes closed and teeth clenched even, )
how many have you done ? i would think you are setting you self up for at least a cato with a 4mm diameter nozzle in a 27mm id tube, due to inconsistent compaction resulting in a weak grain and very restricted gas discharge, and heaven forbid an accident whilst ramming,,
do you have access to a press ? if not it would be a worthy investment in your rocket building,,.
what do you use for you nozzle ?

thanks no more of it will get proper tooling no ramming I like my fingers clay

Something you might like to fiddle with is this mix I came up with:

KClO4 72
Atomised aluminium (fine) 4
Fe2O3 1
Polyester resin 23

Slowish burning (would have to be a core burner) but quite fierce. Seems to need a slight excess of catalyst to get it to set hard.

do you ram comps with kc104 or press

I forget who said it but I remember reading that "as long as you don't have to jump on it you are all good".

Ideally the shell should fall *slowly* to the bottom of the mortar as the air forces its way around the edge. If you have to encourage it a little bit, that is OK too (be careful not to put your hands over the mortar). If it drops quickly to the bottom then you will lose height as the lift gases will escape around the shell.

As long as the shell does move relatively smoothly (and your mortars are in good condition) you shouldn't have any trouble with them bursting.

unless you use to much benzolift