Lol Thats awesome. Admittedly I didn't plan or obtain materials, I just helped build it. It took us much longer to get it working properly than to actually build it. The release was the hardest part by far.

We had open fields but its still dangerous with that much weight moving that quickly. It was built by high-school students and a few parents stepped in when we needed help.

It took a lot of planning and time to take apart and rebuild/adjust with only manpower but it was an experience I will never forget.