No, I think the curved blades were an attempt to draw more air thru the siren. Look at the blades on a turbocharger compressor wheel to see what I am saying. The coast time is determined by the condition of the rotor bearing, the balance of the rotor and correct clutch disengagement. If you were to block the airflow to the siren it would coast for a very long time. Look at my "B&M S8B Siren Restoration" video to see what happens when you block the air intake.
Beautiful spiral in the chopper fan. I call them chopper fans because they are what force the air through the chopper. Idk what they are really called tho.
The M30 has a smaller dia. rotor but Sterling elected to add mass to the aluminum rotor by riveting a steel plate on the face of the rotor and use the term "free rolling" in the Model description.
Question. Do the blades inside the rotor have to be curved to help with the long wind down?? I know the clutch in their or disconnects the motor from the motor and the rotor spins freely, but do the curved rotor blades help?? Nice siren by the way.
Oh. Forgot about the clutch. Thanks. What if you defeated the clutch? Would the motor slow the rotor noticeably faster? Still, in use, no need to keep the motor spinning directly coupled to the rotor and wearing the motor brushes. Thank you.
I use the 2 8D batteries because they are available to me, by no means are they required. Most automobile batteries can furnish 600-1000 CCA (cold cranking amps) for short periods of time. In this video it is powered for approx. 5.5 seconds, in my other Q video, 14 seconds, a regular car battery would give many minutes of noise.
Great thing about rotary sirens is they don't waste a lot of power revving up, and no power at all revving down, yet they still make sound when revving down, so it's really a win-win
Understood. Always wanted to know. But does the M30 rotor have smaller diameter and less "inertial mass" so that it slows faster, anyway? Though I have replaced starter motors, I don't recall ever trying to turn one to discern the drag. I didn't know there was more pressure on high amperage brushes. Thank you.
So that's what the old fire trucks had. I noticed that the holes on the side reminds me of Air Raid Sirens like Castle Castings for example or Carters. I also like how the blade looks too. :)
Go to Federal Signal website, look up the Q siren, download exploded parts list for your model siren, select brake parts you need, jot down part number and order thru a Federal Signal distributor.
Yes you could. Back in the late 1950's thru 1970's, before the electronic siren became easily available, you could see these Q's and other mechanical sirens used on many type of vehicles including cars. Search on UA-cam for "Jeep Q Siren" and you will see it is not a problem.
years back I was on a volunteer rescue squad it was an old van type ambulance and we had one of those mounted on the roof now we did have a 200w electronic sign but nothing would get the traffic out of the way like that big beast of a siren we also had it on another truck and the knob on a code 3 run fell off the electronic siren so we had to run that big beast we're traffic pulled over for 2 miles in front of us nice straight shot no traffic whatsoever everybody was getting up on the curb
I have access to a portable arrow board warning sign like you see on highway construction sites. It has 2 8D 12 volt batterys in parallel that I use as a power source, but any 12 volt automobile battery would give several minutes of run time.
Thats the clutch working as it should. The higher end sirens from most companys sold coaster sirens that incorporated a clutch. When power was removed, the rotor continued to coast, producing sound and saving on electrical
When I was a rookie I noticed numbers on the fins of the Q siren...When asked about it the Shift Commander told me the old Guys would play Routlette...Thats when there was EMS and more down time I guess...
Watch the video of my Sterling M30, it is direct coupled with no clutch, the coast time is considerably shorter than a clutch equipped siren. The motor brushes have high spring pressure because of the large current draw which creates drag.
Excellent! I like it better without the cover. Probably a little louder without the grill and stator port ribs. Federal's rotor is a work of art. Should not be hidden. I would paint an inward spiral on the rotor fins. (A paint which could be removed if desired.) Have you tried reversing polarity and spinning it the opposite direction? Nice, sharp, steady video. Thank you.
I would reverse the DC to make the rotor spin in the opposite direction. Would be.tter withalf the ports. Lower frequencies travel further and penetrate vehicles better.
Cannot reverse a series wound starter motor without major modifications. Simply swapping pos. and neg. leads will not work. Also the clutch would never engage the rotor but it would be an interesting experiment.
That motor has some torque!!
No, I think the curved blades were an attempt to draw more air thru the siren. Look at the blades on a turbocharger compressor wheel to see what I am saying. The coast time is determined by the condition of the rotor bearing, the balance of the rotor and correct clutch disengagement. If you were to block the airflow to the siren it would coast for a very long time. Look at my "B&M S8B Siren Restoration" video to see what happens when you block the air intake.
That's one fast windup.
high voltage.
what about hurricane 130 mkII? it also has a fast windup.
Not to mention the current draw...
That sounded like a really high pitch STH 10
So what? Do all firetrucks just have miniature Q2s mounted on them? because this sounds spot on to the sirens found on most hook and ladders
Frederick Glass this is the same siren just with the cover off
ooooohhh
Frederick Glass your right it does sound like one
yup ua-cam.com/video/8c_TfvYQSXU/v-deo.html
Frederick Glass I’m not sure you’re familiar with how fast those things soin
I Picked up 2 Q1 siren's today and I am going to hopefully repair and bring them back to life.
The Q is the greatest! Couple that with a an old Detroid Diesel and I can't think of a better sounding combo!
Looks like a jet turbine
Gunner Johnson lol
Gunner Johnson off a ge90 cfm leap jet engine without the spinner swirl.
True
Plot twist: they removed that from a jt3d lmao
Firetruck siren! 🚒 Thank you for our firefighters!
even tho its is so old i would have to say the old sirens kill the new electronic ones and this is really loud
Agreed
Beautiful spiral in the chopper fan. I call them chopper fans because they are what force the air through the chopper. Idk what they are really called tho.
Sorry if I came 4 years later, but what the chopper has around is called "Stator"
why does that chopper spin so fast on the start up?
Your neighbours must love you...
Very nice!! Love the Q2!! Thanks
Now that's a real fire truck siren!
I enjoyed this one too!! Keep them comin'
The M30 has a smaller dia. rotor but Sterling elected to add mass to the aluminum rotor by riveting a steel plate on the face of the rotor and use the term "free rolling" in the Model description.
FIDGET SPINNER CONFIRMED
Onward oh no you fucking didn’t
Question. Do the blades inside the rotor have to be curved to help with the long wind down?? I know the clutch in their or disconnects the motor from the motor and the rotor spins freely, but do the curved rotor blades help?? Nice siren by the way.
Oh.
Forgot about the clutch. Thanks.
What if you defeated the clutch?
Would the motor slow the rotor noticeably faster?
Still, in use, no need to keep the motor spinning directly coupled to the rotor and wearing the motor brushes.
Thank you.
such a beautiful sound.. what model is this unit
Federal Q2A, no brake. This is an vintage model using the discontinued ball & ramp clutch.
That sounds way higher than the Federal Signal STH-10
I use the 2 8D batteries because they are available to me, by no means are they required. Most automobile batteries can furnish 600-1000 CCA (cold cranking amps) for short periods of time. In this video it is powered for approx. 5.5 seconds, in my other Q video, 14 seconds, a regular car battery would give many minutes of noise.
Simplemente, espectacular
123 decibels at 10 feet is how many watts of power from this siren?
Great thing about rotary sirens is they don't waste a lot of power revving up, and no power at all revving down, yet they still make sound when revving down, so it's really a win-win
Yes, Q's have been in production for over 60 years with minor changes and new ones are available from Federal.
Oh man; they've kept that design for over 40 years?
Understood.
Always wanted to know.
But does the M30 rotor have smaller diameter and less "inertial mass" so that it slows faster, anyway?
Though I have replaced starter motors, I don't recall ever trying to turn one to discern the drag.
I didn't know there was more pressure on high amperage brushes.
Thank you.
The new ones sure dont coast that long, and its really aggravating to me!
winds down nice and slow good job
So that's what the old fire trucks had. I noticed that the holes on the side reminds me of Air Raid Sirens like Castle Castings for example or Carters. I also like how the blade looks too. :)
Where can I get a replacement siren break? The siren I have has a worn shoe I guess? I need to replace it and put it back together.
Go to Federal Signal website, look up the Q siren, download exploded parts list for your model siren, select brake parts you need, jot down part number and order thru a Federal Signal distributor.
they draw a lot of power?
how much- approx?
What a screamer! 👍
Yes you could. Back in the late 1950's thru 1970's, before the electronic siren became easily available, you could see these Q's and other mechanical sirens used on many type of vehicles including cars. Search on UA-cam for "Jeep Q Siren" and you will see it is not a problem.
Hey send some advice to all emergency vehicles to add louder vintage rotor sirens to their vehicles
Most fire trucks do have these
years back I was on a volunteer rescue squad it was an old van type ambulance and we had one of those mounted on the roof now we did have a 200w electronic sign but nothing would get the traffic out of the way like that big beast of a siren we also had it on another truck and the knob on a code 3 run fell off the electronic siren so we had to run that big beast we're traffic pulled over for 2 miles in front of us nice straight shot no traffic whatsoever everybody was getting up on the curb
These are too heavy and bulky and draw too much electricity at start-up.
Q cuesta o en donde se lo puede conseguir
That rotor looks like a centrifugal pump impeller
EBugatti13 builders does about the same thing
I have access to a portable arrow board warning sign like you see on highway construction sites. It has 2 8D 12 volt batterys in parallel that I use as a power source, but any 12 volt automobile battery would give several minutes of run time.
reminds me of vintage police siren sound effects in old movies. Like some 50s or 60s movie about 20s mobsters
i noticed that the motor shaft doesn't spin unless you give it power but the rotor rotates and no motor is turning
Thats the clutch working as it should. The higher end sirens from most companys sold coaster sirens that incorporated a clutch. When power was removed, the rotor continued to coast, producing sound and saving on electrical
When I was a rookie I noticed numbers on the fins of the Q siren...When asked about it the Shift Commander told me the old Guys would play Routlette...Thats when there was EMS and more down time I guess...
How many ports are there on the siren?
Watch the video of my Sterling M30, it is direct coupled with no clutch, the coast time is considerably shorter than a clutch equipped siren. The motor brushes have high spring pressure because of the large current draw which creates drag.
I love the q. I think it's the same in fs19 fire trucks besides a little shorter and a little edits to the sound
Excellent!
I like it better without the cover.
Probably a little louder without the grill and stator port ribs.
Federal's rotor is a work of art.
Should not be hidden.
I would paint an inward spiral on the rotor fins.
(A paint which could be removed if desired.)
Have you tried reversing polarity and spinning it the opposite direction?
Nice, sharp, steady video.
Thank you.
Sweet! And nice collection by the way. Thanks for sharing!!
@cc10266 The Q sirens have 14 ports.
Nice Job Sounds Great Too
Don't stick your finger in there..........
Stick your head in!
Sounds like a emergency vehicle siren
thats what it is essentially. most fire trucks use these.
revsta I did not know that
yeah heres a few pics of fire trucks i just saw on google, that had the same siren. imgur.com/a/9cd8YOI
more like f1 engine.
The design of the rotor clutch will not allow reverse rotation. Motor would spin but rotor would not.
Momentary surge of 200+ amps, running 100 amps.
I also rescued annabella truskowski with this loud fire engine siren in the 1969 tv show sesame street
Sounds like a fire truck siren
SamZarifYT because it IS a firetruck siren. Just doesnt have the covers on it in the video
Oooh
I’m so dumb
SamZarifYT cause it is
I love it
1:10 when i put it on her other ring
Que hermosa sirena muy bonito
it's a alarm or what???
Attila Sajti sounds like fire truck
u could use this for air raid warning/tornado warning/nuclear warning its pretty cool
that looks like a plane engine tbh
Cuánto cuesta ?
1:09
Bro There's a fire Here Come one Quick
go back and forth with the arrows in ur keyboard and make ur own melody
Can ypu buy them
Well, Your right.
If I sticked my fingers in that fan part of the Mechanical Siren then my fingers would get Chopped off.
Headphones were a bad choice.
See my "Rebuilt Q2 with Covers" video to see it wound up.
1:10 *When you say no to sex on her first date*
I would reverse the DC to make the rotor spin in the opposite direction.
Would be.tter withalf the ports. Lower frequencies travel further and penetrate vehicles better.
Cannot reverse a series wound starter motor without major modifications. Simply swapping pos. and neg. leads will not work. Also the clutch would never engage the rotor but it would be an interesting experiment.
The bell at firefighter school
0:17
...and children, thats how the idea of fidget spinner was born!
damnit, i cant hear anymore
nice
Musical melody if you hit number keys as follow: 5 4 3 6 7 8 9
nice air conditioner
me whenever i find out my mom is having a baby 1:10
That would happen.
make an stx-10 siren out of it
When they flipped it over and have to of them. and putted thoe cones. They invented a 3t22
My fucking ears at 1:10
HAVE THE SAME SOUND WITH MY XBOX ONE S
É SE INVERTER A ROTAÇÃO
rip Headphone users.
Looks like a carter
small but noisy
Get the hell out of the way
Imagina como sirene de policia kkkkk
FUCK THERES A TORNADO oh wait
Loud
Uh.uy vb
Is it 15 port?
I love it