Re: Covered Hopper Cargo Info
I went to Trona, CA 20 years ago on business. What an inhospitable place. Dried up borax lake. Never saw so many literally burnt out homes. Outright depressing. All but gone today I believe.
|
Re: Covered Hopper Cargo Info
As the logos on SHS cars would
indicate==Trona, Borax.? My understanding also indicates that
South Dakota state owned cement traveled East in C&NW hopper
cars rather than farmer's corn.
Bob Werre
PhotoTraxx
On 2/28/25 10:38 AM, Ted Larson via
groups.io wrote:
toggle quoted message
Show quoted text
Additional info from the STMFCL
1958 cuft 70-ton covered hopper
the Prototype Cyclopedia on these
cars indicates they also carried soda ash, potash, phosphates,
borax, sand, quartz/silica (for glass making), alumina, sodium
bicarbonate and zinc oxide.?
?
--
Ted Larson
trainweb.org/mhrr/??????? --------??????? NASG.org???????
--------???????
GN in 1965
|
Still running into 1963??
Ted Larson
----- Forwarded Message -----
To: Ted Larson <mhrreast@...> Sent: Monday, February 10, 2025 at 06:02:59 AM CST Subject: [RailroadCitrusIndustryModelingGroup] Railroad Citrus Industry Modeling Group - Digest #348
|
|
|
This is a digest for Railroad Citrus Industry Modeling Group. View all your groups.io groups, and edit your subscriptions, here.
|
|
Do not reply to this email. To reply to a message, click the Reply link under the message.
|
|
|
Topics in this digest:
|
|
|
|
|
|
|
|
|
1a.?
|
PFE/WP Reefer 50187
From: Bob Chaparro
Date: Sun, 09 Feb 2025 12:47:12 CST
PFE/WP Reefer 50187
A photo post from the Digital Public Library of America.
Description:
Side view of a Western Pacific refrigerator car 50187, most likely photographed upon completion of the American Car & Foundry-built car in April 1923, by Kaufmann and Farry Company, commercial photographers. The car although owned by the WP, was operated as part of the PFE fleet.
My Notes:
California State Railroad Museum collection.
As seen here, most of you know that there were PFE refrigerator cars with Western Pacific heralds.
The story behind these WP reefers appeared on a Tony Thompson's blog post on June 25, 2013. Here is a link to the post:
Some brief points from the post:
- These cars were built to PFE blueprints and were operated and maintained by PFE.
- PFE paid a fixed monthly charge to WP, and in turn collected all mileage payments resulting from operation of the cars.
- There were WP 2,775 cars, numbered PFE 50001 to 52775. These had wood-framed superstructures and exteriors.
- WP cars were never different in color from the rest of the PFE fleet. They were a color close to Armour Yellow when new and in 1929 were repainted light orange.
- By 1950, less than 1,000 of the WP cars remained in revenue service
- During 1952¨C1953 the remaining cars were rebuilt with steel-framed superstructures and air circulation fans. The sides remained wood. They were renumbered as 55001 - 55899.
- There were still 31 of the WP cars in the July 1963 ORER. But the series was gone by 1965.
Bob Chaparro
Moderator
|
|
View/Reply Online |
Reply To Group
|
Reply To Sender
|
Mute Topic
| Top ^
| New Topic
|
|
|
|
|
|
|
|
|
You are receiving this email because you are subscribed to [email protected] via mhrreast@.... You can unsubscribe here.
|
|
-- Ted Larson trainweb.org/mhrr/??????? --------??????? NASG.org??????? --------??????? GN in 1965
|
Re: Covered Hopper Cargo Info
Additional info from the STMFCL
1958 cuft 70-ton covered hopper
the Prototype Cyclopedia on these cars indicates they also carried soda ash, potash, phosphates, borax, sand, quartz/silica (for glass making), alumina, sodium bicarbonate and zinc oxide.?
?
--
Ted Larson
trainweb.org/mhrr/??????? --------??????? NASG.org??????? --------???????
GN in 1965
|
Covered Hopper Cargo Info
Nice info on loads carried by covered hoppers?
Ted Larson
----- Forwarded Message -----
|
|
|
|
|
| |
|
|
2a.?
|
Re: Commodities Carried in ACF 1958 cuft 70-ton Covered Hoppers
From: Nathan Obermeyer
Date: Tue, 25 Feb 2025 10:04:49 CST
[Edited Message Follows] William,
?
I can't comment directly on C&O practices, but the Missouri Pacific Circular #1 shows a diagram (dated 1972, but still relevant) that outlines the progression of dirtiness and the cleaning process required between different types of loads for covered hoppers. I find it interesting that a car that carried cement has to be sandblasted to haul any other product. Silica sand and alumina being interchangeable with rice, soy beans, and wheat is interesting also.?
?
Nate
|
 Attachments:
|
| | | |
|
|
|
| |
|
|
-- Ted Larson trainweb.org/mhrr/??????? --------??????? NASG.org??????? --------??????? GN in 1965
|
Re: Tomalco - It is offical
Very likely only flex track in current codes.
?
Switches would require $$ in tooling.
?
This may be one of those things that scale S guys will just have to be glad that the line of flex has been saved.
?
Andre
?
toggle quoted message
Show quoted text
----- Original Message -----
Sent: 2/28/2025 6:42:58 AM
Subject: Re: [S-Scale] Tomalco - It is offical
Only flex track???
?
Rich G(ajnak)
|
Re: Tomalco - It is offical
Only flex track???
?
Rich G(ajnak)
|
Re: Today¡¯s S Scale project
Here is an update in the build.?
I had spent a month and a half of model powers trying to build up a better tribe train for this model. Due to the models weight but more so the amount of space I had for a gearbox and motor really deterred the size of the motor. I started out with a small motor and it overheated after one lap around the layout. Then I went to the next size up same thing then I went to the next size up same thing. Each and every time I change motor sizes. I had to work on the boiler and I had to make a whole new motor mount. I finally settled on the same size motor in the bronze boiler Mercado I had just completed. But because of the size of the motor a 2935 Sagami, I had to hone out the inside of the boiler to make it fit plus, I had to remove the back head that I had built and sided onto the back of the more space extension for this motor. Once I did that and got the locomotive down to less than 3/4 of an amp, pulling all my lit passenger cars and three cars and it performed perfectly on the layout. I got back to building the boiler. so here are some pictures of where I¡¯m at tonight and as you can see, there are no handrail down the top of the boiler and there¡¯s no whistle. These are the last small delicate details that I install on any steam engine that I¡¯m building. Due to the breakage of miss handling during Work on the rest of the boiler. The whistle is always the last detail that I put on my boiler and when I do that, I consider it completed and ready for the paint shop. In the pictures you¡¯ll note that the pilot truck is not on and that is because the boiler and everything is all bolted together, but it¡¯ll be coming apart here shortly for me to start drilling and soldering handrail stanchions down the top of the boiler. At this time, the only other detail I¡¯m kind of kicking around is maybe scratch making some parts for the back head And most of all. I¡¯m really thinking about doing a smoke light up on the front like the Frisco has on their stacks. If I do a smoke light, it¡¯ll have to go on after the handrails, but of course before the whistle.
?
--
Mike Swederska
Meramec Valley Lines
Modeling Mopac equipment in 3/16
https://www.youtube.com/@mikesscale3149
Don't let perfection get in the way of good enough! Keep model railroading fun!
|
Re: Tomalco - It is offical
Great!?
Thanks for sharing.?
--
Mike Swederska
Meramec Valley Lines
Modeling Mopac equipment in 3/16
https://www.youtube.com/@mikesscale3149
Don't let perfection get in the way of good enough! Keep model railroading fun!
|
It is official. Tomalco Track is now owned by Micro Engineering.
See attached. ? ? Thank You,
Bill Lane
Modeling the Mighty Pennsy, PRSL & Reading in 1957 in S Scale since 1987
See my finished models at:
Look at what has been made in PRR in S Scale! ? See my layout progress at:
Join the Pennsylvania Reading Seashore Lines Historical Society
It's FREE to join!??
Preserving The Memory Of The PRSL
?
|
Re: Diode Constant Lighting
On Wed, Feb 26, 2025 at 11:16 PM, Charles Kinzer wrote:
To get way down in the weeds, LEDs are typically specified with a maximum reverse voltage of 5 VDC.? What saves them from serious damage is the series resistor.? However, damage can accumulate over time from a sort of micro damage to areas of the junction.
Seems pretty easy to add a diode to the circuit to protect the LED.
-Michael Eldridge
|
Re: Diode Constant Lighting
This is where some of the confusion comes in.? The way Digitrax creates the waveform (and it is not the only possible way) is to hold one "Rail A" at common and apply +14 VDC (approx) to "Rail B."? Then to hold "Rail B" at common and apply +14 VDC (approx) to "Rail A."? The result ACROSS THE RAILS is an AC voltage that is 28 volts peak-to-peak, 14 volts peak, and 14 volts rms.
Some argue that there can be no AC "because there is no negative voltage anywhere."? This is true relative to the power supply common, but the DCC voltage is NOT relative to that common, but from rail to rail.
Charles E. "Chuck" Kinzer
On Thursday, February 27, 2025 at 04:07:29 AM PST, Anthony Salvate via groups.io <n1tks@...> wrote:
It is AC. And the rails act as a transmitting antenna. If you tried to turn on your AM radio while your DCC equipment is on, the noise from the DCC overrides the strongest AM station! Regards,
On Feb 27, 2025, at 2:16?AM, Charles Kinzer <ckinzer@...> wrote:
?
AC isn't being mimicked.? It IS AC.? It just happens to be a square wave.? There is a lot of confusion about this due to some other naming conventions.? Most notably "Bi-polar DC" which is a term also used elsewhere in electronics.? By definition, DC cannot be bipolar, so it is just a descriptive term.
I'm pretty sure that the actual light output would cut in half as the waveform has a 50% duty cycle.? Not necessarily compared to 12 VDC, but whatever the RMS voltage of the AC waveform is (which is the same as peak voltage since it is square wave) which is usually a bit higher than 12 volts for DCC unless for N scale.
I don't know if the human eye, or brain, would perceive it as half brightness, however.
To get way down in the weeds, LEDs are typically specified with a maximum reverse voltage of 5 VDC.? What saves them from serious damage is the series resistor.? However, damage can accumulate over time from a sort of micro damage to areas of the junction.? It is probably highly unlikely anyone would see this get to the point of a failure.? People do it all the time.? But it is a circuit that violates a specified limit, and an electronics engineer is likely to avoid a design applying excessive AC to LEDs.
Charles E. "Chuck" Kinzer
?
On Wednesday, February 26, 2025 at 10:10:16 PM PST, Kim Hartshorn via groups.io <w.kim.hartshorn@...> wrote:
I noticed that an LED wired directly across DCC rails will light no matter which lead goes to which rail.? Is this because of the split phase version of DC which sort of mimics AC?? So the diode is only responding to the half wave...does that mean it is at half intensity as compared to pure 12v DC?
?
|
Re: Diode Constant Lighting
Hey there
GREAT QUESTION?
Looking forward to the answer!!!!!
Roger Haag. ? ? ? S scale man
toggle quoted message
Show quoted text
On Feb 27, 2025, at 9:47?AM, Kim Hartshorn via groups.io <w.kim.hartshorn@...> wrote:
?
So this is where,?i think, there is confusion.? My understanding...and I could be totally wrong, is that DCC puts a half wave on each rail so that one rail, for the sake of argument, is a 6v square wave from the 'top' of the wave to neutral.?
In other words 30 pulses and the other rail is the bottom half of the wave -6v from neutral to the 'bottom' of the wave.Each 180 degrees out of phase with each other.? And wiring across the waves results in 12v AC.? In other words there is no 'neutral' rail
with a full square +6 to -6 wave on the other rail.? Each rail by itself represents a square wave DC current to neutral, only when bridged do we get AC.
Does this sound right?
|
Re: Back To Modeling, Sorta...
I wish the Pine Canyon kits were still available, they were very nice.? I built a small number of them, including the Rigsby Terminal kit which I had to modify to fit.? Cutting the walls was a bit messy, but not hard to do.? I used a table saw with a carbide blade, which made a bit of a mess, but that's why we have shop vacs!? The layout may never be done, but the building fits nicely now.?
?
Jerry Poniatowski
Brighton, MI
?
?
?
|
Re: Diode Constant Lighting
So this is where,?i think, there is confusion.? My understanding...and I could be totally wrong, is that DCC puts a half wave on each rail so that one rail, for the sake of argument, is a 6v square wave from the 'top' of the wave to neutral.? In other words 30 pulses and the other rail is the bottom half of the wave -6v from neutral to the 'bottom' of the wave.Each 180 degrees out of phase with each other.? And wiring across the waves results in 12v AC.? In other words there is no 'neutral' rail with a full square +6 to -6 wave on the other rail.? Each rail by itself represents a square wave DC current to neutral, only when bridged do we get AC.
Does this sound right?
|
Re: Back To Modeling, Sorta...
Yes, the material used in the Pine Canyon Modules does have a pronounced Oder when cutting or sanding, but they make great models. I have to say, I have several DSL Models and they are also very nice, bout the odor from cutting into the DSL kits is much more pronounced! Stephen J Kutash
203 906-5116 (Cell)
On Wed, Feb 26, 2025 at 09:38 AM, Bob Werre wrote:
Those Pine Canyon kits were great and not that hard to build.? Modifications were a bit more difficult as it's hard to add or sever wall sections.?
Actually... I've cut many Pine Canyon kit walls using my chop/miter saw and a fine tooth blade (60 TPI, I believe). When I used this blade to cut MDF building cabinets, it produced a wood powder as fine as "powdered sugar." When I used this blade to cut Pine Canyon walls, the blade produced a fine shredded "mozzarella cheese." It is a very messy process, even with a vacuum attached to the saw, but it produces very smooth wall cuts.
?
Phil Scandura
Flagstaff AZ
|
Re: Back To Modeling, Sorta...
On Wed, Feb 26, 2025 at 09:38 AM, Bob Werre wrote:
Those Pine Canyon kits were great and not that hard to build.? Modifications were a bit more difficult as it's hard to add or sever wall sections.?
Actually... I've cut many Pine Canyon kit walls using my chop/miter saw and a fine tooth blade (60 TPI, I believe). When I used this blade to cut MDF building cabinets, it produced a wood powder as fine as "powdered sugar." When I used this blade to cut Pine Canyon walls, the blade produced a fine shredded "mozzarella cheese." It is a very messy process, even with a vacuum attached to the saw, but it produces very smooth wall cuts.
?
Phil Scandura
Flagstaff AZ
|
Re: Diode Constant Lighting
It is AC. And the rails act as a transmitting antenna. If you tried to turn on your AM radio while your DCC equipment is on, the noise from the DCC overrides the strongest AM station! Regards,
toggle quoted message
Show quoted text
On Feb 27, 2025, at 2:16?AM, Charles Kinzer <ckinzer@...> wrote:
?
AC isn't being mimicked.? It IS AC.? It just happens to be a square wave.? There is a lot of confusion about this due to some other naming conventions.? Most notably "Bi-polar DC" which is a term also used elsewhere in electronics.? By definition, DC cannot be bipolar, so it is just a descriptive term.
I'm pretty sure that the actual light output would cut in half as the waveform has a 50% duty cycle.? Not necessarily compared to 12 VDC, but whatever the RMS voltage of the AC waveform is (which is the same as peak voltage since it is square wave) which is usually a bit higher than 12 volts for DCC unless for N scale.
I don't know if the human eye, or brain, would perceive it as half brightness, however.
To get way down in the weeds, LEDs are typically specified with a maximum reverse voltage of 5 VDC.? What saves them from serious damage is the series resistor.? However, damage can accumulate over time from a sort of micro damage to areas of the junction.? It is probably highly unlikely anyone would see this get to the point of a failure.? People do it all the time.? But it is a circuit that violates a specified limit, and an electronics engineer is likely to avoid a design applying excessive AC to LEDs.
Charles E. "Chuck" Kinzer
?
On Wednesday, February 26, 2025 at 10:10:16 PM PST, Kim Hartshorn via groups.io <w.kim.hartshorn@...> wrote:
I noticed that an LED wired directly across DCC rails will light no matter which lead goes to which rail.? Is this because of the split phase version of DC which sort of mimics AC?? So the diode is only responding to the half wave...does that mean it is at half intensity as compared to pure 12v DC?
?
|
Re: Diode Constant Lighting
AC isn't being mimicked.? It IS AC.? It just happens to be a square wave.? There is a lot of confusion about this due to some other naming conventions.? Most notably "Bi-polar DC" which is a term also used elsewhere in electronics.? By definition, DC cannot be bipolar, so it is just a descriptive term.
I'm pretty sure that the actual light output would cut in half as the waveform has a 50% duty cycle.? Not necessarily compared to 12 VDC, but whatever the RMS voltage of the AC waveform is (which is the same as peak voltage since it is square wave) which is usually a bit higher than 12 volts for DCC unless for N scale.
I don't know if the human eye, or brain, would perceive it as half brightness, however.
To get way down in the weeds, LEDs are typically specified with a maximum reverse voltage of 5 VDC.? What saves them from serious damage is the series resistor.? However, damage can accumulate over time from a sort of micro damage to areas of the junction.? It is probably highly unlikely anyone would see this get to the point of a failure.? People do it all the time.? But it is a circuit that violates a specified limit, and an electronics engineer is likely to avoid a design applying excessive AC to LEDs.
Charles E. "Chuck" Kinzer
?
On Wednesday, February 26, 2025 at 10:10:16 PM PST, Kim Hartshorn via groups.io <w.kim.hartshorn@...> wrote:
I noticed that an LED wired directly across DCC rails will light no matter which lead goes to which rail.? Is this because of the split phase version of DC which sort of mimics AC?? So the diode is only responding to the half wave...does that mean it is at half intensity as compared to pure 12v DC?
?
|
Re: Diode Constant Lighting
I noticed that an LED wired directly across DCC rails will light no matter which lead goes to which rail.? Is this because of the split phase version of DC which sort of mimics AC?? So the diode is only responding to the half wave...does that mean it is at half intensity as compared to pure 12v DC?
?
|
Bob Werre
Ted Larson
Bill Lane
Roger Haag
Jerry Poniatowski
pscandura