Rotary snowplows on the Southern Pacific

BoomerD

No Lifer
Feb 26, 2006
64,231
12,562
136
Pretty impressive job...especially since they were using equipment that was more than 90 years old to get it done.
 

Exterous

Super Moderator
Jun 20, 2006
20,482
3,601
126
I was trying to figure out how much snow they would get in a tropical place like the South Pacific
 

olds

Elite Member
Mar 3, 2000
50,071
744
126
Worked plowing snow just down the hill from those tracks for years.
 

ViRGE

Elite Member, Moderator Emeritus
Oct 9, 1999
31,516
167
106
It seems to me the hero of the story is the snowcats, not the rotary snowplow. The plow was getting crushed.
 

tynopik

Diamond Member
Aug 10, 2004
5,245
500
126
It seems to me the hero of the story is the snowcats, not the rotary snowplow. The plow was getting crushed.

exactly

the spreaders seem to be handling everything except the avalanche, so they break out the rotaries and . . . they can't handle the avalanche either

also they seemed to be pushing more snow than throwing it. I was hoping for something more visually impressive, just plowing through and blowing out massive amounts of snow. Instead it ended up pushing a huge block a snow while the rotary slowly nibbled away at the back of the block.

However, are these like some of the last 'working' (as in not touristy) steam engines in the country?
 
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skyking

Lifer
Nov 21, 2001
22,386
5,360
146
throwing wet snow is like throwing concrete. Look for pictures from Alaska to see the huge plumes of dry snow.
 

eldorado99

Lifer
Feb 16, 2004
36,324
3,163
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exactly

the spreaders seem to be handling everything except the avalanche, so they break out the rotaries and . . . they can't handle the avalanche either

also they seemed to be pushing more snow than throwing it. I was hoping for something more visually impressive, just plowing through and blowing out massive amounts of snow. Instead it ended up pushing a huge block a snow while the rotary slowly nibbled away at the back of the block.

However, are these like some of the last 'working' (as in not touristy) steam engines in the country?
Diesel fueled, so not as romantic as coal, but still pretty cool nonetheless. Must cost a fortune to keep in working order even if it only gets used once every 10-20 years
 

ViRGE

Elite Member, Moderator Emeritus
Oct 9, 1999
31,516
167
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Diesel fueled, so not as romantic as coal, but still pretty cool nonetheless. Must cost a fortune to keep in working order even if it only gets used once every 10-20 years
It's probably still cheaper than building new ones. Once they cease working I can't imagine Union Pacific is going to replace them. They're machines of another age, before flight and interstate trucking were viable alternatives.
 

DrDoug

Diamond Member
Jan 16, 2014
3,580
1,629
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It seems to me the hero of the story is the snowcats, not the rotary snowplow. The plow was getting crushed.

Here's a good clip of a rotary actually cutting through the snow and not pushing it. It's still slow going but it's tossing quite a bit of snow.
 

ViRGE

Elite Member, Moderator Emeritus
Oct 9, 1999
31,516
167
106
Here's a good clip of a rotary actually cutting through the snow and not pushing it. It's still slow going but it's tossing quite a bit of snow.
Oh nice. When you need to dig out several feet of powder, it's probably the best tool for the job.
 

DrDoug

Diamond Member
Jan 16, 2014
3,580
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Oh nice. When you need to dig out several feet of powder, it's probably the best tool for the job.

A BIL works for BNSF out of Spokane, WA and he sent me some clips the guys took of winter 'fun' in Montana and northern Idaho. I'll have to dig through my old emails to see if I can find them. Here's a cool clip of trains hauling ass and pushing snow out of the way.
 

destrekor

Lifer
Nov 18, 2005
28,799
359
126
I was trying to figure out how much snow they would get in a tropical place like the South Pacific

Yeesh I was even more off: I was thinking it was on a frozen segment of the Southern Pacific. And I was trying to think: why the hell are they even plowing snow on a frozen body of water? :biggrin:

On topic: Awesome piece of machinery. I love seeing sturdy and still efficient ancient machinery.

I actually cannot believe they have not developed a more modern giant snow-thrower assembly than that model. I might think a giant corkscrew assembly, or just a series of those rotary assemblies staggered smaller in front of one another, might help them push through deeper snow faster with less waste of fuel trying to push through with more power.
 

LTC8K6

Lifer
Mar 10, 2004
28,520
1,575
126
IIRC, no regular type of plow can deal with the packed snow of an avalanche or a very heavy snowfall that has had time to pack down. It's about like concrete.

You can see that the snow actually was hard enough to support the rail cars and lift them off the rails in the accident.

A smaller diameter blade sticking out a few feet in front of the main blade sounds like a good idea, though.
 
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