I've been working my way to lifting a 12" shell for about a year now, and tonight I finally got it done. The rocket stands about 9' tall, weighs in at 36 pounds and pretty much kicked off the next goal. The motor is a 3" ID whistle rocket with a 6" long by 1.5" diameter core and 3" of delay topped off with a wood plug to keep the fuel in the motor. The shell itself weighed about 26 pounds and was my first go at a 12", not the best looking 12 but it will do for this rocket. Thought I would share the vid with fellow pyros across the pond, haven't been on here in a while. Enjoy!
The last two were exactly the same weight to the tenth of a gram component by component. The 76/23 was so much stronger that I am changing the fuel for the big rockets. It's hard to tell by the video but the 70/30 labored to achieve the inferior altitude that it did, it had a large arc almost from liftoff whereas the 76/23 actually went straight up and did so in a hurry by comparison. Surprisingly they had very similar burn durations.
I just put this up on Passfire, I was going through some videos today and watched some of these two again for the first time in awhile. Thunder Over Louisville is the largest fireworks display in the US, and my brother and I have been lucky enough to attend the last three. The scale of the show is difficult to explain, but the video is pretty good. The first video we were in some really nasty cold weather and standing on top of a narrow brick column to get above the masses, but it was worth it. These files are large, each one has the entire show, about 400MB. My site pushes files plenty fast, but if you have a slow connection you can cue it up at bedtime. I hope you all enjoy these videos as much as I still do, really just an amazing show. They actually shut down one of the two main bridges crossing the river and set it up with pyro, the bridge is well over 500 meters long. Huge wall shots and frontages off that bridge, not to mention the longest waterfall you'll ever see. Enjoy!
I built my first lampare yesterday and sent it up last night. Well not so much up as out. No idea what went wrong here, but whatever it was it was the loudest boom I've ever caused intentionally or otherwise.
On the left is the shell wrap, on the right is the only piece of the mortar I could find. It was buried several inches in the ground. I'll give it another go next weekend, hopefully without losing a mortar.
It occured to me that the "Handful of Rockets from yesterday" thread was not really an accurate title anymore. I'm just gonna dump my rocket videos in here from now on.