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Car batteries can die at any age. Even if it doesn't have the big sticker on top of the battery it will probably have some date codes stamped into it somewhere.

In Texas, and other places in the...

I have an iphone but something is wrong with its OS- it cannot send or receive texts of any kind or to/from any kind of other phone.

I have almost no need to send texts although I can see that...

My wife cooked, she wouldn't let me help. We probably had a meal as good as anybody had this day of thanksgiving.

This is probably the first time we have cooked a thanksgiving meal for just the 2...

Find Stine's book _Handbook of Model Rocketry_ . It has some information on different coefficients of drag for different nose cone shapes. But I agree with the advice to try different shapes in a...

I used a clone of the Excel Plus for L1 cert. I don't know why I didn't just buy the kit from Binder but I bought LOC parts and cloned the design. I used a 38mm mount in mine.

I've built several...

If you want to be able to backup and restore installed programs then you will have to do an image backup. Acronis can do it but it is also a complicated process because of complicated partitioning...

We've talked about this before- I recently finished Netflix streaming the full 4 seasons of the 2004 BSG series. I would love to see this movie. I tried to watch the Caprica prequel but the...

My father owns a garage so I had thought about working on cars in some way, but I thought that at some point in my life cars would be replaced by something else.
In Junior High School many of my...

Good point- try making some samples for practice before you make the real ones for your project.

An F240? No, it won't go supersonic by 90 feet because it won't possibly fly that far, it will teleport into another dimension before reaching the end of the launch rod. Years ago I bought an...

I built this one about 20 years ago. One of my coworkers had bought an FSI kit at a local hobby store along with some a couple of packs of F black powder motors. He built the kit and we launched it...

I can tell you what's worse than that- I'm working very hard but I don't get paid for it. I'm hoping things will change and I can get paid a little bit but jobs in my industry are virtually...

I used a relatively small box through my L1. I could easily carry my tools and casings through 38mm/480. I could imagine that if you had to carry larger casings or a lot of casings, lots of big...

For the most part I like a ratio of rocket size to motor size that is somewhere in the middle. And I like launching with motors in the C through G range. I'm a bit cautious with my launches and I...

I have 2 computers at work and 5 at home.
one runs MS-DOS
1 runs Windows XP
1 runs Windows Vista
3 run Windows 7
the last one is a Mac

I have no problem switching back and forth between any...

Congrats.

I'm needing a new job too, I'm working real hard at my current job and not making any money.

I put a SU F72 in a rocket the size of an Estes Alpha. It probably hit mach in a fraction of a second. At launch it basically teleported into another dimension and was never seen again.

We did a little drag racing in college, many years ago. My father built some drag cars slightly over 50 years ago, the beginning ages of hot rodding when all hot rods looked like rat rods.

I think the "phalanx gun" would be considered an automatic machine gun.

However I'm not sure how a gatling gun relates to the legal description of machine gun, in my mind technically it is not a...

I saw this commercial today- looked like a big highpower rocket carried in the back of the truck and then they launched it with a camera strapped to the side.

Why would you try to do this yourself? You're supposed to take it into the dealer and pay them big bucks to do it so they can increase their profits.

I'm just kidding of course. My father has...

I cut some disks out of 1/2" thick wood, some kind of whitewood. I drew a circle on the wood, cut a rough shape outside of the circle with a normal saw, then sanded the disk down to proper diameter...

I think the stuff works well but does require a little effort. It is way less effort that what we used to do using balsa filler or sanding sealer.

I've diluted the filler and spread it on, then I...

I think the BB is the ideal size for a D. Remember when the BB came out B was the biggest engine that we had and the performance on a B was uninspiring. A C would do better, and much better yet on...

I've built a good number of them with used motors. I don't even bother to cut a notch, the engine retainer will bend out of the way enough to clear the engine and when you pull the stand back out...

At least now you've proven it is a viable design and viable kit. Sorry it crashed, that would be a heartbreaker.

I've owned a 1.6X kit for many years. I finally decided to start building it this...

Mine are all something like 1/8" plywood, but these are rockets intended for mid power. If you were doing this to a kit that came with balsa or card stock rings I would think you could use double...

I need some for my build. I don't want to have to drive across town to buy some, or pay high shipping costs just for one little item. If I can find it at a store nearby that would be better.

My original setup used 3 #10 T-nuts and long #10 bolts. The big washer is aluminum so it is fairly light. All together it didn't seem like much weight, and it is on rockets that use G through I...

Here is my cheap answer, from over 10 years ago.

There are 2 methods shown in the photo. My first RMS rocket was set up with a 38mm motor tube. I put 3 T-nuts in my rear centering ring, cut this...