Just a silly question!

[danwisbey85]

What sort of weather do you get in your areas?

Sun/Rain/Storms/Tornado?

[Robert Gift]

Denver, Colorado often has interesting weather.

Due to low humidity, we do not feel the Winter cold nor the Summer heat as keenly.

But at 1 mile high, less atmosphere allows more UV penetration. So I always wear a hat and clothing to avoid sunburn.

One afternoon in early September, I was heading west, emergent. (red lights/siren)

Starting out in clear skies and bright sunlight, I soon entered falling snow of an advancing storm.
Still, in my rearview mirror, things were sunny and bright through the snow!

Continuing north, then west, the snow density increased, becoming a mild blizzard.

As I quietly (no siren) headed down the street towards a familiar residential intersection, one vehicle ahead saw the emergency lights and pulled right, I suddenly saw a red traffic signal above.
I was ALREADY arriving at the intersection!!!!
Instantly I applied brakes and slowed as quickly as possible, but slid on the now slippery surface.

Worse, a southbound vehicle was already pulling into the intersection!!!

All I could do to avoid hitting it was to gently steer to the right and pass barely behind it.
Luckily there was no other vehicle following him, otherwise I would have slid into it --entirely MY fault.

I was shocked that I had lost perception of distance traveled and had arrived at that intersection before even beginning to slow for it.
(Naturally, this time the usually green signal was RED!)

The rest of the trip was in blizzard conditions.

[danwisbey85]

Do you get Tornado's?

[Robert Gift]

Denver rarely has tornadoes in the city.
But just east there are usually a few mild F-1 tornadoes each late spring.
The western edge of "Tornado Alley" is in eastern Colorado.

A tornado was within three blocks of my house, and where was I, a trained tornado spotter?
Seattle, Washington.

Denver had a rash of 6 tornadoes, 3 in the city.
On the TV of a Seattle Fire Station I was visiting, the news covered Denver's outbreak and I recognized my neighborhood where vehicles and buildings had been damaged.

From a call home I learned my house was OK but there was debris high up in my tree.

[SirenMadness]

I heard that the high-low signal was for thunderstorms, in some areas.

[AndrewPollard]

Hi Dan,

Your siren looks bigger than our Castle Castings one which has a 15" diameter stator. How big is it?

Thanks

Andrew

[danwisbey85]

Hi Andrew,

My sirens measurements are:

Total siren height, 18"
Total siren width, 24"
Stator width, 15 1/2"

[danwisbey85]

Oh, that ruins my presumptions.

Yes, please send whatever information you can.

It is 3-phase is it not? 280 Volts?

Still amazed at how close your stator/rotor tolerances appear to be.

If 2800 rpm
560 Hz High note = C#
466 Hz Low note = A#
Minor third musical interval

Thank you,

Hi Robert,

I copied all details from the plate that I could read, some was unable to read, the unreadable bits will be a '"' but here we go.

Brook Motors Ltd, Huddersfield
A.C Motor 3 Phase
F""/B7 726
(Full load speed volts)
2840 (rpm I think)
346/440 (Volts or frequencies maybe???)
HP - 4/5
Full load amps - 7.5
50
15 MIN

That is everything that was viewable on the plate, hope this helps.

Dan.

[Robert Gift]

My guesses

Brook Motors Ltd, Huddersfield
A.C Motor 3 Phase
F""/B7 726 no idea
(Full load speed volts)
2840 (rpm I think) yes
346/440 (Volts or frequencies maybe???)
Yes, motor can use 346 or 440 volts. You change internal taps according to available voltage
HP - 4/5 4 horsepower at 346V - 5 horsepower at 440V ?
Full load amps - 7.5 peak draw on each leg of three-phase at start-up
50
15 MIN duty cycle - do not exceed 15 minute run time or motor may become damaged from overheating.

Can you contact a British electrician or motor company?