madcow super dx3

I recently launched a MadCow Super DX3 for an L1 Certification and it separated right at launch. See Pictures. Originally i thought this was around a Center of Gravity being off but curious if specific to Internal Pressure as well. I do not have a vent hole in the parachute bay, do I need...

Hey All! So after a long time in the hobby as a kid and getting back into it numerous times over the last 10 years as an adult, I finally decided to make the leap into HPR and get my L1 cert. After going back and forth on what rocket to use for my L1 cert (see this thread) I decided to go with...

I'm building a Madcow Super DX3 for my L1 cert flight. My intention is to go low & slow SD for L1, then add a DD bay for bigger engines & higher flights. I tend to overbuild, so this may also be used for L2 cert. To make it SD/DD capable I intend to use the DD ebay without the bulkheads for the...

Question. When you build a three centering ring MMT for TTW fins, you can't get an internal fillet on the bottom side of the top centering ring to BT interface, and it's not easy to get one on the top end of the middle centering ring (you could theoretically inject through the fin slots and then...