I've always wondered what the ratio of 4/5 and 5/6 is. 4/5 produces a major third. 5/6 produces a minor third. I like the minor third better.ver tum wrote:I've been a siren enthusiast for years, but I wasn't aware that there were actually Thunderbolt 1000T's made with only 4 and 5 ports. I heard something that sounded like that when I was a kid, but I thought that maybe, they put a weird chopper in that particular Thunderbolt. The other day, I was browsing this site, and I found out that there were actually 1000T's made by FS that only had 4 and 5 ports. I had always heard in the past that they all had 5 and 6 ports. Are these 4 and 5 port 1000T's rare, and does anyone have an audio or video clip of one of these? I don't hear the one I used to hear any more, because it was replaced with a newer siren.
Thanks for the recording Jason. Those 4/5 port TBolts must be extremely rare, but there used to be one about 3 or 4 miles from where I was living at the time. I believe that siren was replaced with an ASC Alertronic, but I'm not sure. The siren you linked me to has the same problem as all of our sirens do. The blower doesn't stay on for much of the winddown. Our sirens used to sound right, but now, the blowers all turn off almost as soon as the choppers start to wind down. I tried to tell Emergency Management, but they acted like I didn't have a clue what I was talking about.JasonC wrote:Here is one:
http://www.youtube.com/watch?v=ZTDejiSwmSI
Its basically a rotor of a model 2T dropped inside the siren. Why Federal did this, nobody knows.
That bothers me, too. They couldn't allow some extra seconds for the rotor to coast down?ver tum wrote:...The siren you linked me to has the same problem as all of our sirens do. The blower doesn't stay on for much of the winddown. Our sirens used to sound right, but now, the blowers all turn off almost as soon as the choppers start to wind down. I tried to tell Emergency Management, but they acted like I didn't have a clue what I was talking about.
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