Re: >Early EMD SC or SW Switcher - was New Run: Rapido HO Scale General American Meat Reefer
Donald B. Valentine <riverman_vt@...>
Thanks Bob & Tim, Never having seen a top down view of one of these critters before I had no idea that the exhaust stacks were actually located off center. With the dating you have provided the style of vents makes a lot more sense. Thanks again, Don Valentine
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Southwest Scale Productions Doors
I am trying to
further document the selection of Dan Hall's SSP doors. I would like to
have a picture of the number 610, the 5-5-5 wide-seam "Overland" door.
Just the unfinished door, if possible. Here is what I am using for the
#612
so something like that would be helpful, if you have one or
could take one like this, I would appreciated.
Please contact me off-list at shile (at) mindspring (dot)
com.
Thanks,
Steve Hile
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Re: New Run: Rapido HO Scale General American Meat Reefer
Todd Sullivan
Tim,
Thanks, those are great photos and they show exactly what I was trying to describe! There's one other photo I know about that is in one of the small softcover Anthracite railroad books. It shows an overhead view of the CNJ yard on the Lehigh River with 3 SLRX reefers. Since all my Eastern RR books are in storage elsewhere, I can't check. Thanks again! Todd Sullivan
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Re: Anyone Want A First Generation SFRD Mechanical Reefer?
This poll reminds me of practically the same poll taken some time ago, asking us which early Santa Fe mechanical we wanted. I think I voted for the "weird" cars - the Santa Fe built some cars with 52 ft or 54 ft length, not like anyone else's. Different length cars must have made warehouse owners really happy trying to get a string of cars parked in front of their loading doors! :-D IMO this will never happen unless someone does it in resin or 3-D. Tim O'Connor
On 4/4/2020 2:29 PM, Bob Chaparro via groups.io wrote:
--
Tim O'Connor Sterling, Massachusetts
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Re: Anyone Want A First Generation SFRD Mechanical Reefer?
Scott Kremer
I have been talking to various manufacturers for years to try to get anyone to build a first generation mechanical reefer. I model GN/WFEX but I will take anything. The Rr-56 seems to me to be the obvious choice. Not only is it the biggest lot but to those of us that try to stay true a time frame It is the earliest large lot. That means that anyone modeling after 1954 can use the car. if you pick a later date I am out as I model October ,1955. Earlier would also be OK. This would be great.
Thanks, Scott Kremer
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Re: New Run: Rapido HO Scale General American Meat Reefer
It's an EMD SC or SW (not sure which, only difference is the frame), and that's how they were built (over 100 were built)
On 4/4/2020 1:44 PM, Donald B. Valentine via groups.io wrote:
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Tim O'Connor Sterling, Massachusetts
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Anyone Want A First Generation SFRD Mechanical Reefer?
Anyone Want A First Generation SFRD Mechanical Reefer? I am good friends with a person working for a major model manufacturer. His area of expertise is product development. For years he and I have been discussing the possibility of bringing to market an accurate HO scale first generation SFRD mechanical refrigerator car. The cut-off year would be 1960. The car would be produced in styrene and probably only in R-T-R form. From our discussions this project almost came to fruition a few years ago but stalled due to competition from other projects. Times have changed and now this has become a real possibility. There are "foobie" cars offered by Athearn and Walthers, but I share a belief with others that there is a market for a more accurate car. First, I want to hear from you which first generation mechanical reefer is of most interest to you and specifically why you are interested in a particular car. Your choices are the following SFRD classes: Rr-31 (5 cars - 1955) Rr-54 (30 cars - 1953 Rr-56 (150 cars -1955) Rr-60 (25 Cars - 1958 Rr-61 (25 Cars - 1958) Rr-65 (100 cars - 1960) Rr-66 (100 cars - 1960) I'm fairly certain there are builder's drawings of all these classes but that will need to be verified. Factors influencing the manufacturer's decision will be how many paint/repaint schemes are possible (including MOW), and cost of modifying the tooling to produce insulated boxcar versions and cars representing other railroads. Once the manufacturer selects one of these choices I will ask you to submit your photos, especially those with dates, so the manufacturer can evaluate paint schemes and modifications to the as-built prototype. If there is enough good prototype information available there is a real probability a specific car will be produced. Thank you. Bob Chaparro Hemet, CA
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Re: Model brake component size comparison to prototype
steve_wintner
High quality castings for aircraft engines are usually "investment cast" which is pretty much lost wax by another name. A variety of materials can be used - wax, plastic, stereo lithography or other 3d printed resins. Burn them / melt them out, then pour - under vacuum for highest quality. The plasters used withstand very high heat, so high melting point plastic is irrelevant as long as it burns out leaving no ash behind. All metals shrink when they solidify, but it's only a few percent. Depending on how it's done, the wax may shrink too. .97*.97 = still only a little bit. If you are making aircraft engines, that few percent matters.
Aside from jewelry, model railroad gubbins, and aircraft engines, there are cheaper processes for most applications. Steve
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Re: Model brake component size comparison to prototype
Randy Hees
One thought... While AB control valve portions are going to be about the same size... noting that some current portions (there are three parts to a AB control valve, the pipe bracket, the service portion and the emergency portion), The pipe bracket hasn't changed... but some [portions have gotten larger... requiring longer mounting studs... and there are lots of sizes of brake cylinders... you match them to the car's weight.... So the cylinder on a caboose is much smaller than on a 40 or 50 ton box car, with cylinders for a 70 or 100 ton car much larger... I am not sure about reservoir size...
In the era for this list, probably only two common sizes... one for the typical 40 or 50 ton freight car, and one for cabooses... Randy Hees
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Re: Model brake component size comparison to prototype
Dennis Storzek
On Sat, Apr 4, 2020 at 10:36 AM, Ralph W. Brown wrote:
My understanding is that the sacrificial material used to make the molds for casting is, as the name of the process implies, wax, which melts and is absorbed by the mold when it is first heated leaving the void later filled with molten brass or other casting metal.Wax was used when the masters were being "spin" cast in rubber molds. For higher production numbers the masters are injection molded from styrene. Precision scale Co. plastic parts are the same; investment casting masters sold as parts. Come to think of it, Grandt Line once sold their parts in brass, also. Dennis Storzek
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Re: Model brake component size comparison to prototype
Thanks Drew for the clarification. I'd love to see this done. It seems to be an almost forgotten art at least for HO models.
On 4/4/2020 11:35 AM, Drew wrote:
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Tim O'Connor Sterling, Massachusetts
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Re: CB&Q 110193 Truss Rod boxcar
Excellent Bill, thanks for sharing Fenton
On Sat, Apr 4, 2020 at 12:30 PM Bill Welch <fgexbill@...> wrote: CB&Q 110193 Truss Rod boxcar is a Westerfield kit. My modeling date is Oct. 1955 and by then these were probably all gone but I occasionally cheat and so the car has a re-weigh date in 1952. The underframe has not been glued as yet so the body is not yet sitting firmly nested on the U/F. I have also not yet attached the brake wheel. To help keep the turnbuckles taught as well as provide more comfort for someone "riding the rods" a wood plank has been lodged through the four turnbuckles on each side of the underframe. The scratch built Running Board and Latitudinals will receive replacement boards after sandpaper is used to peel some paint up. --
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Re: New Run: Rapido HO Scale General American Meat Reefer
Bob Webber
Not much to that - the vents are as delivered as are the
stack locations.
toggle quoted messageShow quoted text
Early SC switcher, if I recall correctly. Winton powered.
At 12:44 PM 4/4/2020, Donald B. Valentine via groups.io wrote: Say Tim, What in the world do the MOP do to that EMD switcher that moved the exhaust stacks off to the
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Re: New Run: Rapido HO Scale General American Meat Reefer
Schuyler Larrabee
GREAT photos for weathering, Tim.
toggle quoted messageShow quoted text
Thanks. Schuyler
-----Original Message-----
From: main@RealSTMFC.groups.io <main@RealSTMFC.groups.io> On Behalf Of Tim O'Connor Sent: Saturday, April 04, 2020 9:23 AM To: main@RealSTMFC.groups.io Subject: Re: [RealSTMFC] New Run: Rapido HO Scale General American Meat Reefer My favorite roof shots of Swift reefers. On 4/3/2020 10:19 PM, Richard Townsend via groups.io wrote: The Swift cars had BCR roofs, including the red cars. Obviously they -- *Tim O'Connor* *Sterling, Massachusetts*
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Re: Model brake component size comparison to prototype
Schuyler Larrabee
Ralph, I believe that lost “was” is, except for unique individual items made by artists casing in silver or gold, no longer used for mass production of parts like model railroad brake gear. That has become a “lost plastic” process, where many plastic parts are glued together in a “tree< which is then inserted into a can of wet plaster. When dry the plaster cylinder is heated to get the plastic to run out, and then brass is poured into the middle of a spin casting machine, which forces by centrifugal force, the metal into all the voids in the plaster cylinder. After cooling (and shrinking) the plaster is broken away and the parts harvested.
I presume that the plastic used has a lower melting temperature than that used for injected molded parts from metal dies.
I have received lost plastic parts that still have plaster on them.
Schuyler
From: main@RealSTMFC.groups.io <main@RealSTMFC.groups.io> On Behalf Of Ralph W. Brown
Sent: Saturday, April 04, 2020 1:34 PM To: main@RealSTMFC.groups.io Subject: Re: [RealSTMFC] Model brake component size comparison to prototype
Hi Tim,
My understanding is that the sacrificial material used to make the molds for casting is, as the name of the process implies, wax, which melts and is absorbed by the mold when it is first heated leaving the void later filled with molten brass or other casting metal. I doubt plastic detail parts made by Cal-Scale or others would or could preform the same function, although I suppose they could be used as “masters” for casting the sacrificial wax patterns, copyright issues notwithstanding.
I suspect there are others here who are more familiar with the process and could provide a more detailed description of the process.
Pax,
Ralph Brown
From: Tim O'Connor Sent: Saturday, April 4, 2020 9:15 AM Subject: Re: [RealSTMFC] Model brake component size comparison to prototype
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Re: New Run: Rapido HO Scale General American Meat Reefer
Donald B. Valentine <riverman_vt@...>
Say Tim, What in the world do the MOP do to that EMD switcher that moved the exhaust stacks off to the left side and radically changed the roof vents ahead f them as well? Talk abut the Rock Island's Christine, this is quite a rebuild! Cordially, Don Valentine
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Re: Model brake component size comparison to prototype
Ralph W. Brown
Hi Tim,
My understanding is that the sacrificial material used to make the molds
for casting is, as the name of the process implies, wax, which melts and is
absorbed by the mold when it is first heated leaving the void later filled with
molten brass or other casting metal. I doubt plastic detail parts made by
Cal-Scale or others would or could preform the same function, although I suppose
they could be used as “masters” for casting the sacrificial wax patterns,
copyright issues notwithstanding.
I suspect there are others here who are more familiar with the process and
could provide a more detailed description of the process.
Pax,
Ralph
Brown
Portland, Maine PRRT&HS No. 3966 NMRA No. L2532 rbrown51[at]maine[dot]rr[dot]com
From: Tim
O'Connor
Sent: Saturday, April 4, 2020 9:15 AM
To: main@RealSTMFC.groups.io
Subject: Re: [RealSTMFC] Model brake component size comparison to
prototype As I recall, all Cal-Scale detail components were OVERSIZE because they were used for lost wax casting! In that process the plastic parts are for the molds and are destroyed in the casting process, and the shrinkage produces parts that are closer to scale. Or am I wrong? :-) Tim O'Connor ======================================== On 4/4/2020 9:00 AM, Lester Breuer wrote:
-- Tim O'Connor Sterling, Massachusetts
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Re: Model brake component size comparison to prototype
Schuyler Larrabee
Tim, I believe you’re correct about this process. I’ll have to look at the information on Lester’s blog and measure a few things.
Schuyler
From: main@RealSTMFC.groups.io <main@RealSTMFC.groups.io> On Behalf Of Tim O'Connor
Sent: Saturday, April 04, 2020 9:15 AM To: main@RealSTMFC.groups.io Subject: Re: [RealSTMFC] Model brake component size comparison to prototype
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Re: Model brake component size comparison to prototype
Jim Hayes
Lester, I read your review of brake equipment sizes and the following one on the SF boxcar and was impressed by both. I should read your blog more often. JimH
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Re: New Run: Rapido HO Scale General American Meat Reefer
Eric Hansmann
FYI, I saw three or four of the original run at Chuck’s Depot in Marion, IL, last fall on the return trip from RPM Chicagoland. I do not recall the price, road numbers, or company names. I suspect he is open since he lives upstairs.
Eric Hansmann Murfreesboro, TN
From: main@RealSTMFC.groups.io <main@RealSTMFC.groups.io> On Behalf Of Bob Chaparro via groups.io
New Run: Rapido HO Scale General American Meat Reefer From the Rapido website: "Rapido is pleased to announce a new production run of our HO scale General American 37’ meat refrigerator car! It has been quite a while since we’ve offered these popular cars for sale, and it’s about time that we did some more! We are offering new road numbers on some of the most popular schemes from the earlier runs, as well as an all-new HO release." https://rapidotrains.com/products/ho-scale/freight-cars/ho-scale-37-general-american-garx-reefer These are available in multiple road numbers for: American Stores Armour Cudahy Dubuque GARX Refrigerator Hormel Kingan Morris Rifkin Oscar Meyer Swift (Red Block, Red Billboard & War Bonds) URTX Refrigerator Undecorated I have no idea whether all of these variants are accurate for prototype cars, however. I have no financial connection to Rapido. Bob Chaparro Hemet, CA
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