Liftanddeafen Posted October 28, 2013 Posted October 28, 2013 I am building my Very first 12" shell next week and I would like to know how much whistle to use the MCRH ration is 4:1 and I have used 12g of kclo4: sodium benzoate in my previous 8" shells and they seemed to work ok. It's just that the expense of the 12" is quite a lot so I don't want it to sag in the sky! Cheers will
Arthur Posted October 28, 2013 Posted October 28, 2013 Plastic or paper hemis it makes a difference. With a well pasted paper shell I'm surprised that you need booster, I usually consider under 4" to need a booster but over that not so,
Liftanddeafen Posted October 28, 2013 Author Posted October 28, 2013 It's a paper hemi double petal with heavy inner petal stars. Would you say 12g would be ok? Cheers will
Xtreme Pyro Posted October 28, 2013 Posted October 28, 2013 (edited) On the last 12 I built and shot a couple weeks ago, I used 12g ot 7/3 flash and 24 machine layers of paper. I typically stick too the gram per inch of booster, and 2 pasted layers per inch of shell with great results. The shell broke nice and round with a big spread, so yes I'd say 12g would do you just fine, depending on your pasting of course. Pasting was done on a WASP style pasting machine, which is equivalent to 1.2x the # of hand pasted layers because of the overlapping at the poles. So you may want too paste an extra layer or two, just be sure it will fit in the gun. Edited October 28, 2013 by Xtreme Pyro
Liftanddeafen Posted October 28, 2013 Author Posted October 28, 2013 Sounds nice! Yeah I'm doing it on a manual wasp where it automatically wets the paste for you but you have to still paste the shell haha! But would you keep the amount the same for kcl04 and sodium benzoate? Cheers will
tedbayly Posted October 29, 2013 Posted October 29, 2013 (edited) good luck would love to be doing that new around here by the way Edited October 29, 2013 by tedbayly
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