It is officially that time, time to kick off my L2 project. Before I get into that, I want to talk about how I came up with this and why I am doing what I am doing.
When approaching a new build I generally build to the motors that I want to fly. That said I have always enjoyed the sledge hammer quick burn motors, especially those with a high length to diameter ratio. There is just something aggressive about them, 100% unapologetic... to that end I knew that my next big project would be built for the Loki 38/1200 case and more specifically the K1127, but also wanted a 54mm mount for the J1799.
Enter the Wildman Drago 4! Its 48"airframe set up for HED and 54mm motor mount can easily accommodate most any motor I will fly. Its final weight of around 8.5 pounds (purely a guess based on what I have seen others come in at) will allow respectable flights on moderate 'I' motors at NOVAAR's obstacle filled field, and will return some serious performance when I let it rip at Battle Park.
To the build plan. Keeping this fairly straight forward, but with a few twists from stock as, well, that's what I do. The most dramatic change will be swapping the stock nose cone for more aggressive 6-1 version also from WM. I will also be using a 19" long motor mount. This affords me two benefits, one real and one perceived. First I am a fan of anchoring my rail buttons into the forward and aft centering ring. The longer motor mount and addition of birch ply rings will allow this. Also, and this is 100% on me, I like having my motors "contained" especially if using motor ejection as a back up. The longer motor mount allows for that. No not for the aforementioned 38/1200 case, but then I do not see me using motor backup there... after that that the major components are as follows:
-Birch ply forward and aft rings with the stock fiberglass ring acing as the center centering ring. (I strongly prefer 3 rings on my builds.
-A 10" long AV bay to hold an RRC3, RRC2+ and eventually the Missile Works RTx tracker. This will be spaced accordingly by the use of a 2" long switch band. Don't want to have a ton of coupler in the airframe and secured via 2-56 pins.
-Motor retention will be via a flange mounted Aeropack using a 38mm adapter when needed
-Recovery will be a combination of 1/2" Kevlar adhered directly to the motor mount and 20' OBH 9/16 3 loop nylon harness. To save space the nose cone HED will use a 3/8" nylon harness. Thinking now that the "drogue" will be a 70" X 7" streamer with the main being either a 48" crossfire chute or a 7' RM. I also have a 70" Top Flight X form in my rocket box from a previous project that will likely work for the time being so long as it will fit. All components will be protected with Nomex blankets.
-All structural bonding will be with T88 by System Three and external fillets will be made with RocketPoxy.
-Rail buttons will be a standard 10/10 affair with an 1/8" aluminum spacer to move the rail off the airframe a touch.
-And as always, graphics will by from StickerShock23. ...really goes without saying!
really going to take my time with this one. more than the whole measure twice deal... currently I am looking to have the first flight be at the NOVAAR July or August launch. Already have an I300 in the range box.
That's about it for now. Placed an order with McMaster-Carr for the electronics bay components earlier, and aim to have the WM order completed later today.
Stay tuned as this should be fun.