Adrian

Adrian,so you leave any air space in there? When I run out of the little plastic cups I have, I want to try this method. I didn't think Pyrodex burned fast enough????? When Pyrodex is sufficiently co...

I use the 1/4" launch lugs from Apogee for my charges. I make a 5-minute epoxy puddle on a piece of plastic, fold the wires of an ignitor 90 degrees and set the wires into the puddle with the head st...

Pro 29: Pro 38: etc.

About a year ago I got some thick-walled tubing from McMaster and the ID was too small to get enough powder in there. Then a few days ago I bought some tubingg that Home Depot sells, thinner-walled s...

How about how many motors you're buying vs. how many you're burning. Darn you BATFE, for losing the case and letting me take motors home! 😉

This unit is an altimeter only. No ability to set off anything. Who makes a good accelerometer based altimeter/charge capable unit? (Raises hand) 😀

Rather than a call in, I wonder what CTI's 29mm 3 grain G106 skidmark would look like at night? Hmm. I'm not an expert at the legalities, but I think it's still classified a high power motor. I have...

We put in a Web site update tonight that should address the spam issues that we've had. You'll may notice that captcha is now turned off for regular login. Most of the other changes aren't so obviou...

I especially like pistons in low-power birds. They take a lot less room than the amount of dog barf you need for the same amount of chute protection.

Pictures of Chad's first dual-deploy flight:

I'll try to be there for Saturday, to do a flight test of the 3-stage 38mm bird I'm getting ready for XPRS. I'll probably fly all 3 stages but only ignite 2 smaller motors to stay under the waiver. ...

If my 38mm sustainer or 2nd stage come back from XPRS, I'll go for the SSSS, and/or I and J altitude records. If just my 1st stage comes back, I'll probably go for an I record (but not a SSSS, since ...

I have been told that a manufacturer-approved tapered aft closure/nozzle is available for 38mm reloads on request; they start with a standard closure/nozzle and turn it down. Here's the thread for the...

You mean the AT350? It's been out for awhile. The new full I from CTI (I216) should beat it, though, if you don't mind the lack of a forward closure. Speaking of which, I want two of those (I216) wi...

You can use some motor casings, a threaded rod from Home Depot, and an airframe to press-fit the mandrel out, similar to Edward's method, below. For details and pictures, see page 2 of my 38mm carbon...