Estes fletcher?
Blackhawk?
Close, I like the Fletcher fins a lot, but these have a slightly different aspect ratio. I'll give a hint, it is OOP.
Estes fletcher?
Blackhawk?
That looks a little like the bay I built for my 1.63 IQSY Tomahawk. I used a Quark. Plus yours looks neater than mine.
The pull pin switch wasn't the best choice. I was going to use a magnetic switch, and had ordered them when the Tripoli/NAR rules on switches were revised. It would be nice if they were allowed once they finalize the rules.Very nice, I'm not done yet, so there still plenty to that will clutter it up. I also like to run screws through the bulkhead like you did. It keeps it gas tight. I used thumb nuts that make it easy to attach ematch wires by hand.
The pull pin switch wasn't the best choice. I was going to use a magnetic switch, and had ordered them when the Tripoli/NAR rules on switches were revised.
You're building quite a different animal than mine which putts along on 29 Hobbyline motors. I may get around to putting an H in it.I'm planning on a screw switch, relatively simple and straightforward. I'll be using a Proton, it's a little larger, but I want the accelerometer data.
If you have a 38/480 case, look into the I1299.
The first layer 1/2 as long as the fin length and 1/2 the width. The second layer 3/4 the length and 3/4 the width and the last covered the whole fin.
Shaping/tapering also reduces the mass at the tip of the fin. (Imagine swinging your empty hand back and forth in the air, then hold a 1 or two pound weight in your hand and do the same thing.
Is it relative stiffness to mass that matters?
The kit fins get the job done, but it the shape does not really appeal to me. Deltas and clipped deltas are certainly functional (and have their advantages) but a secondary (primary?) goal is to exceed Mach 1 in style. I borrowed this shape from another rocket I really like, does anyone recognize it? They are slightly larger, and I'm shifting them forward a hair, so I expect this will be slightly slower, but looking good is important.
View attachment 416555
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I cut the fins out of 1/8" ply, transferred the crenelations (??) with a razor saw, and cleaned up the cuts with a scroll saw and small file.
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I like this much better!
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GLR Mariah.
i have no idea what BT60 means but Mach 1 uses whatever notation that is, and could probably get you a long couplerI can’t find any BT60 coupler tubing in lengths longer than 4-5 inches. I’d like at least a 6” long coupler.
Where did you find yours?
BT60 is the 1.63” tubing our LaserLOC 1.63 rockets are made from.i have no idea what BT60 means but Mach 1 uses whatever notation that is, and could probably get you a long coupler
The rule of thumb is to have (roughly) one caliber (rocket diameter) on each side of the connection, so for a 1.63" diameter rocket, you'll likely not find a coupler longer than 4". I've also looked as I'm going to use couplers in my Super Big Bertha to strengthen the airframe to allow larger motors. They don't exist in cardboard. If you don't care about weight, you can use either a Blue Tube coupler (they come in 48" lengths) or fiberglass (8" from Apogee).BT60 is the 1.63” tubing our LaserLOC 1.63 rockets are made from.
I’m trying to put an av bay in mine as you have done but can’t find any coupler tubing long enough (6-7”). LOC only lists 4” long couplers.
I can’t find any BT60 coupler tubing in lengths longer than 4-5 inches. I’d like at least a 6” long coupler.
Where did you find yours?
They don't exist in cardboard.
laserloc been on my radar, maybe should order one right up..
Your milestones are probably beneath your current skill level. Worry less and push the button! seriously tho, i applaud your caution. most of those I work with are quick to turn from a minimal cert flight to some top-spec monstrosity on the next flight (sometimes at the same launch!)
I used to fly with a student who had jr L1, but I swear he had more skill and knowledge than the average L3. He was staging composites, inventing new recovery techniques, and had electronics out the wazoo. He said something about progressing to the point where he could do an L3 project, and i was like "man I would trust you with an O3400 right this minute if you had the cash and had built a rocket for it". It was truly awesome to watch his projects, doing more with small motors than most of us ever do with big ones.Thanks! Yeah, there are so many things to do with Level 1 motors, I'm less interested in "leveling up" than I am in trying new things and seeing what I can do. For me, it is fun to pursue specific goals and try to optimize and learn along the way.
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