- Dec 17, 2012
- Reaction score
Hi all, I'd like to get an idea of how much XXXX to use for my 7.5" rocket. I'd like to find out what everyone thinks the correct amount for a 10.5" long chamber and of course 7.5" diameter. My calculations come up with 2.5 grams, but that's pretty potent in the last few launches. I'm backing down to 2 grams next launch. The coupling fit is about average in resistance. Thanks for any replies!!