burned up thunderbolt siren chopper motor

I pulled this little "treasure" out of the scrap pile behind the alarm shop at work. It has new bearings, brushes, and is in perfect condition except for the fact that the armature has a short in it somewhere. It has a dual tone cap and a single rotor. It is going to parted out for use in my upcoming Thunderbolt project and I might just go ahead and stick the new armature and 5/6 rotor I have in it so I can just drop it into my 1000 after I get it.

Category:

Science & Technology

Tags:

• thunderbolt
• siren
• chopper
• motor
• federal
• signal
• 1000
• 1000T
• civil
• defense
• storm
• tornado
• warning
• tbolt

[JustInn014]

Is that a 1003 stator? I know it's a 1000 chopper.

[Blue10AEMia]

After the A series, Federal signal stuck the same chopper cap on all the thunderbolts, regardless of whether it was a 1003, single or dual tone. All t-bolts received a chopper cap with holes drilled and tapped for the solenoid bar and a divided stator.

[Blue10AEMia]

Just a little update for everyone, I haven't had a chance to growl the armature yet but I did manage to test the field. The results seem to indicate that the field is totally dead and has an open spot in it since I found no hint of magnetism anywhere when power was applied to the coils. It appears in the video that the siren was running off the commutated force of the armature alone, hence the jerking, banging, noisy start and excessive sparking from the brushes.

[soccerdude7330]

Nice video, Jeb! Hopefully you can get that fixed soon. Btw, I'm gonna try to score one of the Nashville Thunderbolt 1000/1000T's this weekend, I'm hoping their the 1000T model.

[Blue10AEMia]

yeah hopefully you can score a dual tone model, because most of the ones I've ran across are 1000's.

[bait28]

Well, i foundout today that my 1003 Has a burned up motor too. I'll show a video.

[sorrysarge]

question does anyone know where i can get my hands on a thunder bold or even a mini thunder bolt out where i live we cannot hear the city's sirens and we are prone to sever weather any time of the year i am a firefighter so the county government will allow me to have and operate one

[cheetawolf]

the tow large rectangulat holes is whee the sound comes out, but four of the 8 screw holes by the sound holes is where the horn is bolted on.

[cassandraruth]

are the 2 holes where the horn is attached the Rotor/Stator? or is there a chopper & stator in that whole compartment and the holes are where the sound is projected?

[robertgift]

Thanks.

I assumed that.

Surprised they did not make more sirens with common interchangeable parts, especially the 2t22 cones (projectors), which are difficult to fabricate.

[DL1011]

Robert,

Federal began making 2 port caps after about 1970. It was cheaper to just make one kind of cap then to make two. All series C sirens have "dual tone" caps.

[robertgift]

Why only one tone with openings for two tones?

Interesting.

Glad you saved it from scrap.

Thanks for the education about "growling".

[LNERMallard]

Is this the now 'Blunderbolt'?

[FoamPackingPeanuts]

Nice find.