Hi everyone, I'll quickly introduce myself. I like many others flew rockets when I was younger and stopped around 20 years ago, but had gotten up to RMS G engines and had built a 7 x 29 mm cluster (Thor maybe?) that I was planning on getting my certification with. Fast forward - this summer I went to a launch with a friend and I'm back in! I plan on getting my L1 certification in a few weeks.
I had an old Jaguar kit that I never built all those years ago and decided to give it a go. I decided to use a double wall so I could use larger engines and also modified the engine mount and use kevlar for the shock cord instead of the included shock cord mount tube (picture attached). I also decided to go with rail buttons instead of launch lugs. I've got a few questions I hope you guys could help out with!
1) For the double wall, do I need to double all sections or only the booster section? The kit instructions (thankfully provided by Mike from Binder Design) say it requires 8 couplers, but this is not quite enough to double wall the entire rocket. Am I missing something?
2) I made the Kevlar quite long (12') as suggested in other threads, but I am curious what the correct way to attach this to the shock cord is. Is there a particular knot that I should use? Do I use epoxy at all?
3) I plan to use wood filler for the spiral and a light coat of epoxy on the plywood fins to get a smooth finish before priming. This seems like a "do it your way" topic from all of the threads on it, but wanted to make sure there is nothing alarming with this plan.
4) I don't plan to dual deploy, I'm just going to use a chute release on the main chute. Do I need to add screws for the other sections? If so, I've never done this and could use suggestions. Is it normal to screw in to the nose cone as well? I would want to be able to remove the nose cone so I can add an altimeter to the top section.
Thanks! Looking forward to responses as well as joining the community
I had an old Jaguar kit that I never built all those years ago and decided to give it a go. I decided to use a double wall so I could use larger engines and also modified the engine mount and use kevlar for the shock cord instead of the included shock cord mount tube (picture attached). I also decided to go with rail buttons instead of launch lugs. I've got a few questions I hope you guys could help out with!
1) For the double wall, do I need to double all sections or only the booster section? The kit instructions (thankfully provided by Mike from Binder Design) say it requires 8 couplers, but this is not quite enough to double wall the entire rocket. Am I missing something?
2) I made the Kevlar quite long (12') as suggested in other threads, but I am curious what the correct way to attach this to the shock cord is. Is there a particular knot that I should use? Do I use epoxy at all?
3) I plan to use wood filler for the spiral and a light coat of epoxy on the plywood fins to get a smooth finish before priming. This seems like a "do it your way" topic from all of the threads on it, but wanted to make sure there is nothing alarming with this plan.
4) I don't plan to dual deploy, I'm just going to use a chute release on the main chute. Do I need to add screws for the other sections? If so, I've never done this and could use suggestions. Is it normal to screw in to the nose cone as well? I would want to be able to remove the nose cone so I can add an altimeter to the top section.
Thanks! Looking forward to responses as well as joining the community