Bad train pictures

[Anonymous]

QUOTE: Originally posted by Modelcar

T Scott...In the discussion of water pumps and pressure in a conventional auto cooling system....don't forget one of the most important items....The pressure cap on the radiator tank.

I neglected to add in my previous post the crucial word 'volume'. Water pumps in auto's are volume pumps- not pressure. And yes, the 'pressure cap' is a fail-safe in place so that extensive damage isn't done by heat and pressure from the combustion process. They are designed as the weakest link in the system if an overheat or over-pressurization occurs.

[Anonymous]

QUOTE: Originally posted by Modelcar

T Scott...In the discussion of water pumps and pressure in a conventional auto cooling system....don't forget one of the most important items....The pressure cap on the radiator tank.

I neglected to add in my previous post the crucial word 'volume'. Water pumps in auto's are volume pumps- not pressure. And yes, the 'pressure cap' is a fail-safe in place so that extensive damage isn't done by heat and pressure from the combustion process. They are designed as the weakest link in the system if an overheat or over-pressurization occurs.

[Modelcar]

...Pressure caps are also the item controlling the pressure in an auto cooling system. Before 1950 [for most manufactures], pressure caps were not used....and hence no pressurized systems...only when they overheated and the resulting steam couldn'd escape fast enough through the overflow pipe, would the pressure build up...but with the onslaught of higher compression engines and more heat something was needed to keep coolant in all the hot spots of an engine and prevent steam pockets and pressure caps were some of the design to work on that...50 / 50 antifreeze solution was added somewhat later to help in several problems, etc....By the way, I agree auto cooling system pumps are volume and not pressure pumps. They have a very important job to do and you can't run very far without it energized.

[Modelcar]

...Pressure caps are also the item controlling the pressure in an auto cooling system. Before 1950 [for most manufactures], pressure caps were not used....and hence no pressurized systems...only when they overheated and the resulting steam couldn'd escape fast enough through the overflow pipe, would the pressure build up...but with the onslaught of higher compression engines and more heat something was needed to keep coolant in all the hot spots of an engine and prevent steam pockets and pressure caps were some of the design to work on that...50 / 50 antifreeze solution was added somewhat later to help in several problems, etc....By the way, I agree auto cooling system pumps are volume and not pressure pumps. They have a very important job to do and you can't run very far without it energized.

[cpbloom]

Why does NS take its locos in primer paint and paint them later, are they needed that badly?

[cpbloom]

Why does NS take its locos in primer paint and paint them later, are they needed that badly?

[Anonymous]

http://www.krunk.org/~joeshaw/pics/ns/emd-locos/sd70m.shtml

notice NS 2598

[Anonymous]

http://www.krunk.org/~joeshaw/pics/ns/emd-locos/sd70m.shtml

notice NS 2598

[wabash1]

the ns dont care if the units are painted or not when they need power it goes. and most of the time its is into coal service.

[wabash1]

the ns dont care if the units are painted or not when they need power it goes. and most of the time its is into coal service.

[CSSHEGEWISCH]

BNSF did a similar thing a few years ago when some of their C44-9W's were pressed into service with an incomplete paint job.

[CSSHEGEWISCH]

BNSF did a similar thing a few years ago when some of their C44-9W's were pressed into service with an incomplete paint job.

[dharmon]

Dynamic Brakes.....


Two units MU'd one with dynamics one with out....can the dynamics still be used on the DB equipped one?

[dharmon]

Dynamic Brakes.....


Two units MU'd one with dynamics one with out....can the dynamics still be used on the DB equipped one?

[mudchicken]

yes....preferably (sp?) if you cut out the connections of the traction motors to the toaster grids....there are ways that kill the whole deal which usually result in "Quasimodo Complex" (i.e. alarm bells)....another issue has to deal with the pin connections in the MU cables and if the non-DB unit is properly wired.....older DRGW units did not MU easilly with most other RR's units account two extra connecting pins.

Limited Clear, CSXEngineer, Ed and company can answer in more detail.

[mudchicken]

yes....preferably (sp?) if you cut out the connections of the traction motors to the toaster grids....there are ways that kill the whole deal which usually result in "Quasimodo Complex" (i.e. alarm bells)....another issue has to deal with the pin connections in the MU cables and if the non-DB unit is properly wired.....older DRGW units did not MU easilly with most other RR's units account two extra connecting pins.

Limited Clear, CSXEngineer, Ed and company can answer in more detail.

[rrnut282]

Re: unpainted locos

NS needs to keep its Knoxville shops busy and someone figured out they could paint the locomotive cheaper than the factory, so NS has 'em delivered in primer and puts it to work. They figure eventually it will pass through Knoxville where they pull it off of a train to visit the paint shop.

[rrnut282]

Re: unpainted locos

NS needs to keep its Knoxville shops busy and someone figured out they could paint the locomotive cheaper than the factory, so NS has 'em delivered in primer and puts it to work. They figure eventually it will pass through Knoxville where they pull it off of a train to visit the paint shop.

[pmsteamman]

QUOTE: Originally posted by dharmon

Dynamic Brakes.....


Two units MU'd one with dynamics one with out....can the dynamics still be used on the DB equipped one?

Sure can the second unit will just be dead weight at this point until you start pulling again then it will do its share of the work.

[pmsteamman]

QUOTE: Originally posted by dharmon

Dynamic Brakes.....


Two units MU'd one with dynamics one with out....can the dynamics still be used on the DB equipped one?

Sure can the second unit will just be dead weight at this point until you start pulling again then it will do its share of the work.

[wabash1]

the only way dynamic brakes will work is if the lead unit has dynamic braking capability. reason is there isnt a handle to operate the dynamic brake if not equiped. Now lets go to the second possiblity in which you have dynamic on lead unit but it is inoperable due to ground relay , cut out traction motor. the other units will operate just fine . The dynamic can be cut out manually by a switch on the control panel. this also applies to all units in consist.

[wabash1]

the only way dynamic brakes will work is if the lead unit has dynamic braking capability. reason is there isnt a handle to operate the dynamic brake if not equiped. Now lets go to the second possiblity in which you have dynamic on lead unit but it is inoperable due to ground relay , cut out traction motor. the other units will operate just fine . The dynamic can be cut out manually by a switch on the control panel. this also applies to all units in consist.

[FJ and G]

What are those big silver tanks trackside along NS between Alexandria & Manassas? Do they supply air to throw the turnout remotely or something else?

dave v

[FJ and G]

What are those big silver tanks trackside along NS between Alexandria & Manassas? Do they supply air to throw the turnout remotely or something else?

dave v

[CSSHEGEWISCH]

I can't speak for the setup in Virginia but in Chicago they are propane tanks to supply switch heaters during the winter.

[CSSHEGEWISCH]

I can't speak for the setup in Virginia but in Chicago they are propane tanks to supply switch heaters during the winter.

[Mikeygaw]

what is a bow coal train and how is different from a regular coal train?

[Mikeygaw]

what is a bow coal train and how is different from a regular coal train?

[Mikeygaw]

http://www.railpictures.net/viewphoto.php?id=39274

what information is around about the type of caboose in that pic? Never saw one that looked like that before.

[Mikeygaw]

http://www.railpictures.net/viewphoto.php?id=39274

what information is around about the type of caboose in that pic? Never saw one that looked like that before.