Adrian

Nice work Adrian, looks real nice. What is the overall weight? how much weight did you had? The cured carbon fiber was 13 grams, before I added the epoxy to the outside and tungsten/epoxy to the tip. ...

Very nice Adrian. You should try spincasting them. I'm sure a chopped carbon fiber layup would be as strong and smooth. Tungsten is used to weight golf club heads - you know, the new space ship fly...

...and I got the idea from Ed Wranowski, who made an av-bay with compressed o-rings on each end to hold it in place. When I saw these at Home Depot, I recognized them as using the same principle, and...

These days, tungsten powder is pretty easy to come by, because apparently golf club makers use it. You can buy 1/2 lb it from Amazon for $20. For me it would be a little pricey for noseweight on a r...

Here it is with the epoxy/tungsten powder cast into the tip of the nose. Yes, the rocket is balanced on that cup. The extra coating of epoxy on the outside came out uneven, so I sanded most of it o...

My second attempt (bottom) came out much better than the first one (top): I need to get it back into the mold and cast the noseweight into place, which will complete the tip. While I'm at it, I'll a...

Personally, I don't see much point in trying to make a stability rule of thumb in terms of calibers. It's too conservative for fat rockets and too aggressive for long, skinny rockets. If your stabil...

My last nosecone attempt was mostly a failure. I had too much of the carbon sleeve in the mold, so it bunched up and wrinkled, making a couple of deep divots. I thought the vacuum bag would push it ...

An all-mechanical solution would be cool in a retro way. My own project that may come up to the front burner sometime this season is a GPS-based, self-returning rocket. I have a cheap RC paraglider c...

I have been working with this little beastie with the intention of hooking it to generic data logger, which will make it into a rocket eventually. Sadly it has not gotten much attention, got in over...

The standard answer would be NO, but then it might depend on the altimeter. One of the electronic geeks could answer this better than I can but NO. The Q2G2 ignitors should be safe to be used for de...

I've had trouble making fiberglass molds of my 29mm nosecone plug. They're not terrible, but it took a couple of tries to get usable ones, and they have quite a few flaws from bubbles and a ragged pa...

In almost all of my layups there comes a point where I say to myself "oh crap, this layup is doomed!". Sometimes it's true, but not usually.

Apparently there are lots of ways to skin this cat... I wet mine out thoroughly, and then put it over the tube. I squish it end-wise to make the diameter a lot bigger and then stretch it out to place...

AdrianThose ave bays are pretty cool.Thats another way he could go.Are those magntic switches adaptable to other Alt. with 9 volts.How high are those ravens rated for? Thanks. The magnetic switches ar...