Neil
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- Joined
- May 10, 2011
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OK, dont try to talk my out of this, you have already tried that. I have a 6" diameter (down from 8" sono-tubes) 10' tall rocket that I am planning on building, and I am wondering what you guys would reccomend for fiberglass. My choices are: 3/4 OZ (no way. Way too light if you ask me) 2OZ (I use this on most of my smaller rockets, including my MB1), and 9OZ. that is all my local hobby shop has in stock, but I might be able to get different weights over the internet, you tell me. The rocket will not be breaking the sound barrier on any motor, unless I decide to soup it up a bit when I am in my 20s, if I dont decide to retire it before then. But for now it is not flying on Ms, and an L1060GG in a few years is the absolute MOST I am going to fly in it for 6-10 years, if at all. Mostly I-K for this puppy. I know you dont think I am mature enough for these motors, but I can fly it on I357Ts to prove I built it right, and just take it up one step at a time, maybe a J350 or J370GG after the I, and then a K570GG or K550W in a year or two. I wasnt going to dive in with the biggest motor possible with my first design, but the way I worded it it kinda sounded like I wanted an L for the first flight. Big screwup there. I really planned on flying it on a J570 or less first, and then work it up. Just worded it funny. Also, how do I seal the fins so they dont come apart during flight? is there a special resin, or should I put some fiberglass on all the edges or what? Or maybe Carbon Fiber scraps from a boat-builder. Living right here on the coast with all these rivers, lakes and oceans there are hundreds of stores that would have scraps for cheaper than normal. I could proabably scrounge up enough pieces to cover the exposed edges of the fins. There is a lot of plywood left over from my parents bed (which they took apart and are planning to throw away. They got a smaller one). It is 4 or 5 ply 3/4" plywood. I am wondering if this will do for bulkheads if I cut out several circles and glued them together with some fiberglass in the middle. I am thinking maybe 4 or 5 pieces thick for the bulkhead right above the motor mount, and 2 or 3 for the rest. Since there is so much wood there (A full kingsize bedframe of it) I can take my time and if I screw up I make another one. There also has to be enough room for a good u-bolt or whatever you call those big things that screw into bulkheads to attatch shockcords to. There was one on CTulanko's L3 project, I was reading the review for it on EMRR a day or two ago. and should I make it so I can slide the fin unit out of the tube after I glue the fins onto the motor mount so I can put good filets on? Or should I do it with normal slots like LOC/presision does and just put some PML Expanding Foam in there? How does that foam work? Can I hot-wire it or use a Dremmel tool (my mom's X-mas present that i get to borrow) or a hacksaw or what? is it very hard to use? Should I glass the motor mount? what about the surface of the fins, should I glass that too? and should I put a wrap or two of glass around the edges of the bulkheads as well just to make them stronger? I need to know everything on how to do this. I know I cant do this on my own. I will have Stephen Boy helping, as well as my dad, and hopefully a lot of you giving advice. I will ask you not to tell me that I am not mature enough to do this. If I am not, at least I have two people who are at my side helping. I think I know how to make a nosecone out of foam, but it wont kill to ask how to do that too, just to see how all of you do it. What kind of glass should I use on that? And is it possible to drill or hot-wire out the part of the center of the cone for nose-weight and still have it be strong enough? What should I use for nose weight? I have som BBs, and I could get a diving weight from a diveshop. What do you use for weights? Thanks for the advice. -Neil