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Here is another looks like it was running on gas
slant gas.jpg
 
RustyRatRod said:
Some old guy in Connecticut was a retired electrical engineer and passed away. This is what he had in his basement for when the power went out. lol It's actually up for sale. Pictures stolen with pride off Facebook. @67Dart273 Del, this looks like something you'd do. lol



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Throughout the years I say a hand ful of these, mostly emergency power for phone switching stations. The later ones were LP or natural gas fueled. I believe these gen sets were produced by Katolight Corp. The also used alot of Ford engines.
 
oliver said:
2 pole units are for small engines. That's probably a 4 pole so it would need to turn 1800rpms.
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That makes sense, but the power is much reduced at 1800. for 30kw you would need at a minimum 30kw/746 = ~40 hp, which sounds reasonable. Probably need at least 60hp to cover surges and generator efficiency.
 
trapster said:
That makes sense, but the power is much reduced at 1800. for 30kw you would need at a minimum 30kw/746 = ~40 hp, which sounds reasonable. Probably need at least 60hp to cover surges and generator efficiency.
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You don't HAVE to turn the generator at crank speed. (Belt drive or gearbox) Bear in mind though, that old style, synchronous generators are VERY inefficient. One source I found suggested less than 20%

But most 6's / truck engines are very torky devices, and generate most their "oomph" at fairly low RPM. I would think a typical slant would be "right at home" at 1800

I mentioned Onan twins earlier. These are common in motorhomes and run typically at 1800, much much quieter "out of the gate"
 
trapster said:
That makes sense, but the power is much reduced at 1800. for 30kw you would need at a minimum 30kw/746 = ~40 hp, which sounds reasonable. Probably need at least 60hp to cover surges and generator efficiency.
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and thats no issue at 1800 rpms since its generating probably 200 lbft at the crank. so 200lbft at 1800rpm is close to 70hp.
 
jos51700 said:
Was he using the alternator to run household current?
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We are talking about the "big" alternator, the green thing out back. You want a generator as close to 60hz as you can get. Some household devices are sensitive, although modern switch mode power supplies are not.
 
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KosmicKuda said:
This reminded me of the Chrysler-powered air raid sirens. When Chrysler engineers set their minds to something it was usually no holds barred; powered by first gen hemis. It is still the loudest such device ever produced at 138 dB at 100 ft.
That's even louder than an Amber alert at 2 am.
The Chrysler Air Raid Siren Was So Powerful it Could Induce Rain | Amusing Planet

Chrysler Air-raid Siren
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In my neighborhood the owner of a Mustang shop has a hemi powered Victory Siren. He convinced the city to sell it to him and hired a crane to get it down from the roof it was mounted on.
He also has a jet engine smoke generator. One 4thof July he fired both up. The whole neighborhood came to see what the ruckus was. Then came the cops. They asked him to stop because in Oakland, that many people out in the streets frightens the police department.
 
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