What's actually happening is that on piston upstrokes, some of the water is going into the dome (path of least resistance) and compressing the air head until the air pressure equalled the pump pressure. On downstrokes (lower pump pressure), the air is pushing water back out and into the discharge port(s). Those actions smoothed out the pulsations in the lines, but not by a long shot did it completely eliminate them.
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Thread: For the "Olde Fahrts"
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05-30-2011, 12:09 PM #21Forum Member
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05-30-2011, 12:41 PM #22Forum Member
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The first year I was at my college Fire department we ran a mid 40's Buffalo with a piston pump so I remember those pulsations well.
I pretty much died later that year and we replaced it with a Dodge Power Wagon with a front-mount pump and a 250 gallon water tank.Train to fight the fires you fight.
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05-30-2011, 04:08 PM #23
That's a fine fleet of Foxes!
"The education of a firefighter and the continued education of a firefighter is what makes "real" firefighters. Continuous skill development is the core of progressive firefighting. We learn by doing and doing it again and again, both on the training ground and the fireground."
Lt. Ray McCormack, FDNY
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05-30-2011, 08:28 PM #24
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05-30-2011, 08:31 PM #25
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05-31-2011, 08:15 AM #26Forum Member
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Great pieces of apparatus, except that I've noticed they require two operators: one to work the controls and a second to stand there and tell you how great they are.
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05-31-2011, 09:19 AM #27Forum Member
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05-31-2011, 10:21 AM #28
There is a great story that goes with that Pawtucket RI Sedan-Cab unit (which is a 1937 by the way......)
Seems that back at that time, the Maxim salesman for that part of the country (which of course was smack dab in the middle of Maxim's backyard) was incensed that Pawtucket had purchased a Fox over his wares. He was also perturbed that Fox was also picking up sales all over his territory (again Maxim's very backyard.) Maxim salesman started spouting off about how his product was superior to the Fox, and how "those piston pumps weren't worth doo-doo."
So the Fox salesman (I forget his name....) bet the Maxim salesman $1000 bucks that the Pawtucket truck pictured above would pump a decent stream through ONE MILE of 2.5" hose.
They set it up one day, and folklore has it that the Fox was successful, and that the Fox salesman used the winnings to pay the Pawtucket firefighters for their time in laying out and re-packing all that hose."Loyalty Above all Else. Except Honor."
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06-01-2011, 02:13 AM #29
There's an Ahrens Fox, complete, with the "pressure dome," sitting in the maintenance bay of a friend's fire department here in Illinois. It pains him that it hasn't been restored and is super rough, but at least the political hacks haven't scrapped it or tried to pawn it off. It is where it belongs, and hopefully it ends up restored and back to its former glory. What a beautiful machine, I stood staring at for at least an hour one evening. I won't say where for fear someone will make the city fathers (who are in hate the fire department mode) a cash offer they can't refuse to take it off their hands...
Thanks for the pics Randy."Share your knowledge - it's a way to achieve immortality." - Stolen from Chase Sargent's Buddy to Boss program
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06-30-2011, 09:22 AM #30Forum Member
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Nice pictures!
You can see individual shots of all of the 'Foxes that were on hand by viewing these two links on the Youngstown Fire Forums.
Ahrens-Fox Apparatus 1930 - 1977
Pre-1930 Ahrens-Fox Apparatus
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06-30-2011, 03:09 PM #31Forum Member
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