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An old soldier in Dallas
Posted: Mon Sep 15, 2008 2:22 am
by CDV777-1
Here are some pics I took today of one of the original (1959) Dallas
Thunderbolts. I flipped up the blower box to make sure it was a single
phase unit and it is. I was surprised to see a smaller blower. I guess since
the repulsion induction motor runs faster that's why the blower is smaller.
The blower appears to be exactly half the size of a 3 phase unit.
The motor looks a bit smaller than the old 3 phase motor also.
Posted: Mon Sep 15, 2008 2:57 am
by ThunderboltFreak
Very old Thunderbolt, do you know if it's still active? Atleast it's still in one piece over the years though. Anyways, very nice photos.
Posted: Mon Sep 15, 2008 3:15 am
by 500 AT fan
At most, it seems as though it's survived with most of it's original parts. Great pics. Didn't know there was a such thing as a 1 phase T-Bolt!
Posted: Mon Sep 15, 2008 3:37 am
by holler
Nice repulsion induction motor on the blower, is that a model where the brushes retract after the motor has hit full speed?
Posted: Mon Sep 15, 2008 3:44 am
by Oldiesmann
Very nice pics. What's with the fence and barbed wire? Most sirens I see around here don't have a fence around them.
Posted: Mon Sep 15, 2008 3:50 am
by curtjr4
Maybe to prevent Vandalizm, or Unauthorized acccess? IDK for sure. We dont have fencing around our sirens in Lansing...
Posted: Mon Sep 15, 2008 10:32 am
by NFRANGA
That's definitely a old soldier. Wonder if the thing still works, or is operational.
Posted: Mon Sep 15, 2008 12:24 pm
by CDV777-1
It's at an old vacant fire station where the power has been disconnected.
I would bet that it still works though.
Posted: Mon Sep 15, 2008 4:00 pm
by kx250rider
500 AT fan wrote:Didn't know there was a such thing as a 1 phase T-Bolt!
I think they might be fairly rare. One of mine is a single phase, and it was the first one I'd heard of. Definitely inefficient, but I guess it made sense in some applications where getting 3-phase power would be tough.
I'll have to go gave a look at that Thunderbolt
Where is that fire station? So of the remaining Dallas Thunderbolts, there's this one, and the one at Hillcrest High School. I wonder what (if any) others are still there? I'm not sure if the Hillcrest one is still connected, as I've never managed to be there on a test day. I might try to catch the December test, if there is one. We usually are there for a week or 2 during Christmas time.
Charles
Posted: Mon Sep 15, 2008 11:45 pm
by Travis
Lots of the Dallas Tbolts are still around. Installation of the 2001's is going very slowly.