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In search of a tube coupler to repair a kink in the 2" [ID: 1.95 in. (4.95 cm)] lower tube on a Estes Ventris. Sadly, the Estes shop lists the part as Sold Out. If anyone happens to have an Estes part #030618 they are willing to part with, it would be greatly appreciated. Please let me know...

Haven't come across this, that I know of, on the forum as of yet. Wish I would have found it while studying before taking my exam. Would have saved me a lot of scrolling back and forth on the study page on the Trpoli site. https://play.google.com/store/apps/details?id=com.tripolil2test

Things are looking good for the July 22, 2016 Copenhagen Suborbitals - Nexø I launch. With all testing completed, here's hoping everything goes as planned! https://copenhagensuborbitals.com/nexo/ Post Launch Well, at least they're consistent. Now, the all important data recovery and...

In the process of assembling an Aerotech D15 reload, the instructions recommend attaching a piece of tape to the top/delay side of the grain to insure the igniter remains in contact with the grain. (The D15 uses a grain adapter) I've had trouble getting the timing of the delay down with motors...

Would you consider a streamer as descending drogueless from the apogee charge/event of a dual deploy recovery system?

After forty some odd - off and on again - years of flying I discovered for the first time that, yes black powder motors can CATO as well. Today my girls and I took the Estes Majestic I received from them for Christmas last year out for it's maiden flights. In our launch box for the day, we had...

As pyrobob points out "Start it at the 3:24:25 mark." Unless you'd like to see the run up and interviews. Data sheet and analysis linked below. Post/Live coverage. https://www.youtube.com/watch?v=UjkfnOzTCCM

Earlier today I went to Youtube to see if I could find a simple tutorial on determining the center of pressure on a model rocket. The first video on the list had a NASA logo on it and was under five minutes long. So, I thought to myself "Score!" Upon watching the video, which starts off with...

https://science.nbcnews.com/_news/2013/04/04/17602907-ancient-life-form-breathes-rocket-fuel-ingredient?lite It takes all kinds. :surprised:

Ok, we can probably all agree that the most satisfying sound in rocketry is the sound of a successfully timed ejection charge. But what is your next favorite sound associated with rocketry? For me, the deep throaty sound of an Estes D engine still can't be beat. I'm not sure if it's because...