I have the AT 38mm/480 case and the two spacer kit. I was going to get the 360 case with the spacers, but my local vendor convinced me to get the 480 case. I'm glad I did as I now reaiize that I would never use the 120 reloads; just not enough oomph. I have four launches on the 480 case, with three of them using one or both spacers. They do provide a lot of flexibilty for only a slightly more complex motor build.
qquake2k has a valid complaint; it can be a juggling act. I had a loose delay grain on my last motor. I should have added tape or something to get it snuggly into the forward closure. The thing with AT reloads, and high power rockets in general, is take your time and do not rush anything. Ask someone if you need help. If you are not sure, do not launch!
Last edited by Zeus-cat; 31st March 2012 at 02:33 AM.
NAR# 92125 L1
Total Impulse for 2011: 1,729 N/s
Total Impulse for 2012: 1,689 N/s
Total Impulse for 2013: 1,199 N/s
A:18, B:11, C:25 D:33, E:4 F:0, G:0, H:1, I:0