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When I got my radio, it was strongly recommended to get the SMA to BCN connector shown below. It reinforces the relatively weak SMA connector on the radio.

If you have any interest in using the...

One approach I'm rather partial to is using the Mach delay on the PerfectFlight MAWD or HA45 altimeters. You can set this to 4 seconds, for example, even if you're not flying near Mach. Then, if...

I'm glad to hear there will be a number of these attempts at LDRS. They're fun to watch (assuming you're looking at them at the moment the button gets pushed - otherwise, you missed it). I plan on...

Manny, the method you mentioned for high altitude deployment is attached below for those interested. I added to the article (from Rockets Magazine) to include the method that I use now. It's a bit...

Flying that rocket was a lot of fun. The group shows up with this rocket-like thing and say "would you mind launching this rocket for us on a K". Umm... well, let's take a look. It was obvious...

I'm sure folks will want to know ...

What you're fiberglassing?
Why you're fiberglassing it (i.e., how much strength do you need to add)?
Are you OK getting your supplies mail order?

Jim

Alex, you might look into the Soller shrink tubing.

http://www.solarcomposites.com/composites/carbon%20fiber%20sleeves.html#Shrink

I know people have used this with socks, and I've considered...

I have a couple of higher altitude flights planned, either at your place or Blackrock. We'll see what happens, but I'm definitely ready to go.

Jim

Yes, Las Cruces. Lots of "ifs".

Jim

There's a slight chance I may come out to visit you at the end of May. If I do, I can bring you some mylar.

Jim

The article is more for carbon and multi-wrap tubes, but there might be a few tidbits in there. And if you want to use mylar for multi-wrap tubes, then that's a pretty good way to do it.

Mark...

Some years back, Mick Kelly raised the process of using the mylar wrap to a fine art. He produced some of the best stuff I've ever seen. With any luck, I've attached the write-up of his method here...

Are there known cases of this with these cones?

Jim

Here was a post on my BD. I've only flown it on 2 grain J motors though. Three grains (if that's what is in your picture) would be ... well ...exciting. With 2 grain motors, and with cutting off...

Mark, this will be a very useful site. Thanks for putting it together. I have a few more files for your collection. What's the process for getting them to you?

Jim

Well, something like that could have happened. I tend not to tighten my quick links very tight on the assumption that it's not likely they could open by themselves. Maybe not a good assumption. ...

Glad you found the rocket. Now, time for the bigger motors!

Your comment reminds me of a funny story (at least it's funny now). I did a two-stage flight at Wayside a few years back. Not a bad...

Attached are a few pics of my 54mm Big Daddy (I have a 29 mm one also). This one flies only on 2-grain, 54mm J motors, and it's flown maybe a half dozen times. I don't really know the altitude...

I'm trying something new with my units. The main problem I have with them is that the battery connection sticks up and/or out away from the board where it is susceptable to being disconnected. ...

Well, my point was that cutting the airframe compromises its strength. In the attached pic, which is the bottom of my 3" two-stager, the body tube on both of the "top" two fins is cracked at the...

I've got a 3" two-stager with 54mm motor mounts and you can do plenty of damage in that size. So, I think your decision is fine. Having said that, I also think that building a 3" rocket with...

All the reasons in the posts so far are good ones. Having said that, it is entirely possible to have the altimeter in the nose cone. One reason for doing this is if you're trying to minimize the...

AVT Composites...

http://www.avtcomposites.com/cgi-bin/commerce.cgi?display=home

... will take your order over the phone, answer any questions on their products, provide expert consulting on...

I have a couple of Big Daddy's with enhanced motor mounts (29mm and 54mm). I've added nose weight to each. In both cases, using Rocksim (Barrowman), the margin of stability is about 0.9 calibers. ...

I had a Raven that had an accelerometer that was reading low - about 70% of the correct reading. It calibrated correctly, but showed the error at higher G levels. The net effect of this was an...

I took a reasonable amount of crap for my flight given that it went to 35K and obviously couldn't be seen. I had full gps, though, and my TAP felt that pretty much told the story.

Jim

One possibility is that the flight took off at an angle. When this happens, actual apogee takes place before inertial apogee. I did some calculations a few years back to try to estimate how "late"...

This probably won't help you much, but here's a skid I have that has both the Featherweight and Aerocon switches on it. They're just sort of fitted and epoxied in place.

Jim

Just an attempt to link Mach 4 with a potential warping of space-time. N5800's can do that .... right?

Jim

I believe CC's Bare project might qualify here...