Date   

Re: pending membership

Matt
 

Hello Proto48Patrick
Do you still have any of the HO Sergent couplers left if so which ones. I maybe interested in buying some from you.

Matt


Re: Interest

Andy Reichert
 

Hi Matt,

For the sake of being picky. Proto:87 is specifically a wheel profile and track flange ways model engineering standard. The realism and accuracy of the rest of the model is whatever the modeler makes of it. By definition therefore Sergent couplers fit in the latter category.

That said, the couplers are both highly accurate and ingeniously operate virtually prototypically. I'm a big fan.

Andy

On 3/12/2021 8:03 AM, Matthew Harris wrote:
Hello to whom it may concern I'm sending this email to inform those who are apart of this special interest group that I m a avid model Railroader who specializes in highly detailed museum quality models. I recently have made the switch from rp25 to proto 87. I look forward to hearing from you and those who are user's of Sergent couplers.

Matt
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Restart on the EC87K and Lower shelf E's

Matt
 

Hello does anyone know roughly when Frank will be restarting the casting process for the standard length type E's along with the lower shelf E's. I know he said sometime this month.

Thanks Matt


Interest

Matthew Harris
 

Hello to whom it may concern I'm sending this email to inform those who are apart of this special interest group that I m a avid model Railroader who specializes in highly detailed museum quality models. I recently have made the switch from rp25 to proto 87. I look forward to hearing from you and those who are user's of Sergent couplers.

Matt


Re: Type F couplers

Bryian Sones
 

Hi David,

I would be interested in some of these too if they are not all gone.

I sent you a PM

Kind Regards, 

Bryian Sones
Union Pacific Prototype Modeler
Murrieta, CA


On Thursday, March 11, 2021, 11:21:32 AM PST, Nick Campbell via groups.io <nick_jps@...> wrote:


I would like to buy the double shelf couplers if they are still available.
Thanks, Nick Campbell


On Thu, Mar 11, 2021 at 2:16 PM, David Colvin
<djc148@...> wrote:
I have a couple of bags of made up regular, and double shelf couplers that need a new home.
 
David C
On 03/11/2021 11:34 AM Todd Fisher <tftrainman1@...> wrote:
 
 
Trying this again I know it's a long shot but does anyone happen to have about 35 pair of Type F couplers they'd be willing to part with? I still have an entire coal train I'm working on that needs them. Preferably the .130 shank if possible.  Thanks 


Re: Type F couplers

Nick Campbell
 

I would like to buy the double shelf couplers if they are still available.
Thanks, Nick Campbell


On Thu, Mar 11, 2021 at 2:16 PM, David Colvin
<djc148@...> wrote:
I have a couple of bags of made up regular, and double shelf couplers that need a new home.
 
David C
On 03/11/2021 11:34 AM Todd Fisher <tftrainman1@...> wrote:
 
 
Trying this again I know it's a long shot but does anyone happen to have about 35 pair of Type F couplers they'd be willing to part with? I still have an entire coal train I'm working on that needs them. Preferably the .130 shank if possible.  Thanks 


Re: Type F couplers

David Colvin <djc148@...>
 

I have a couple of bags of made up regular, and double shelf couplers that need a new home.
 
David C

On 03/11/2021 11:34 AM Todd Fisher <tftrainman1@...> wrote:
 
 
Trying this again I know it's a long shot but does anyone happen to have about 35 pair of Type F couplers they'd be willing to part with? I still have an entire coal train I'm working on that needs them. Preferably the .130 shank if possible.  Thanks 


Type F couplers

Todd Fisher
 

Trying this again I know it's a long shot but does anyone happen to have about 35 pair of Type F couplers they'd be willing to part with? I still have an entire coal train I'm working on that needs them. Preferably the .130 shank if possible.  Thanks 


Re: Remote Decoupling

George Hofmann
 

I saw one article having to do with Flexinol which describes how this wire can be used as an actuator by heating to reduce it's length. It said that for longer lifetime the strain on the wire should be reduced to 6% of length. It described "longer lifetime" as greater than 1,000,000 cycles.

George


Re: Remote Decoupling

 

What are "mould" hills?
Andy Jackson
Santa Fe Springs CA




On Mon, Mar 8, 2021 at 12:31 PM Brian <rallim56@...> wrote:
I think you blokes are making mountains out of mould hills, for starters
where are you going to hide this equipment on a empty flat car or in a empty
gondola?? plus there are a lot of "what ifs" trying to use a complex system,
not to mention the cost, if you stop and consider for awhile, you are not
going to be making cuts in a train at random locations along the main line,
you are going to be only making cuts at certain locations such as at a
siding where you need to detach a car into the siding, so in other words at
a "set" location, likewise at depots where you maybe changing locomotives,
again at a "set" location, concepts and theories are wonderful thoughts, but
they're not always practical, there's an old saying in industry, "stick with
the KISS program", KISS stands for "Keep It Simple Stupid"



Brian
Rawbelle County Workshops
Qld. Aust.
-----Original Message-----
From: Andy Reichert
Sent: Tuesday, March 09, 2021 5:10 AM
To: SergentEngineering@groups.io
Subject: Re: [Sergent Engineering] Remote Decoupling

Does Nitinol have a limited working life?

Andy

On 3/7/2021 8:19 AM, George Hofmann wrote:
> Wow! Now you're talking!
> I was going to suggest the Nitinol wire as an actuator solution. Nice to
> see that you are ahead of me on that.
> Regarding the air hose connection I was thinking that the metal coupler
> would be adequate. It of course requires that a wire be connected to it
> somehow which is a little issue. There is the possibility of combining the
> two connection ideas such that a return circuit is available. This would
> negate track pickups in each car which is huge.
> Also since I published this idea I realized that a simple pulse train
> could be improved on. Instead send a train of pulses synchronized with the
> DCC signal as a multibit message containing a header, a byte representing
> the car count, followed by a CRC. This could be sent many times for
> redundancy.
> Processing in each car could be handled by a small microcontroller such as
> an ATtiny85.
> The idea of triggering sounds from the cars is brilliant! Hearing a
> coupling sound coming from the loco when the actual action was 5 cars back
> forced me to turn off the sound.
> Pretty sure you are on the right track so to speak. Carry on.
>
> George
> Edgewood WA
>



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Re: Remote Decoupling

Brian
 

I think you blokes are making mountains out of mould hills, for starters where are you going to hide this equipment on a empty flat car or in a empty gondola?? plus there are a lot of "what ifs" trying to use a complex system, not to mention the cost, if you stop and consider for awhile, you are not going to be making cuts in a train at random locations along the main line, you are going to be only making cuts at certain locations such as at a siding where you need to detach a car into the siding, so in other words at a "set" location, likewise at depots where you maybe changing locomotives, again at a "set" location, concepts and theories are wonderful thoughts, but they're not always practical, there's an old saying in industry, "stick with the KISS program", KISS stands for "Keep It Simple Stupid"



Brian
Rawbelle County Workshops
Qld. Aust.

-----Original Message-----
From: Andy Reichert
Sent: Tuesday, March 09, 2021 5:10 AM
To: SergentEngineering@groups.io
Subject: Re: [Sergent Engineering] Remote Decoupling

Does Nitinol have a limited working life?

Andy

On 3/7/2021 8:19 AM, George Hofmann wrote:
Wow! Now you're talking!
I was going to suggest the Nitinol wire as an actuator solution. Nice to see that you are ahead of me on that.
Regarding the air hose connection I was thinking that the metal coupler would be adequate. It of course requires that a wire be connected to it somehow which is a little issue. There is the possibility of combining the two connection ideas such that a return circuit is available. This would negate track pickups in each car which is huge.
Also since I published this idea I realized that a simple pulse train could be improved on. Instead send a train of pulses synchronized with the DCC signal as a multibit message containing a header, a byte representing the car count, followed by a CRC. This could be sent many times for redundancy.
Processing in each car could be handled by a small microcontroller such as an ATtiny85.
The idea of triggering sounds from the cars is brilliant! Hearing a coupling sound coming from the loco when the actual action was 5 cars back forced me to turn off the sound.
Pretty sure you are on the right track so to speak. Carry on.

George
Edgewood WA


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Re: Remote Decoupling

Andy Reichert
 

Does Nitinol have a limited working life?

Andy

On 3/7/2021 8:19 AM, George Hofmann wrote:
Wow! Now you're talking!
I was going to suggest the Nitinol wire as an actuator solution. Nice to see that you are ahead of me on that.
Regarding the air hose connection I was thinking that the metal coupler would be adequate. It of course requires that a wire be connected to it somehow which is a little issue. There is the possibility of combining the two connection ideas such that a return circuit is available. This would negate track pickups in each car which is huge.
Also since I published this idea I realized that a simple pulse train could be improved on. Instead send a train of pulses synchronized with the DCC signal as a multibit message containing a header, a byte representing the car count, followed by a CRC. This could be sent many times for redundancy.
Processing in each car could be handled by a small microcontroller such as an ATtiny85.
The idea of triggering sounds from the cars is brilliant! Hearing a coupling sound coming from the loco when the actual action was 5 cars back forced me to turn off the sound.
Pretty sure you are on the right track so to speak. Carry on.

George
Edgewood WA
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Re: Remote Decoupling

George Hofmann
 

Also, a couple of days ago I initiated a public project on Github called TrainlineDecoupler. So far it is just a Readme file. But it would be a good place to collaborate if you or anyone else is interested.

George


Re: Remote Decoupling

George Hofmann
 

On Sun, Mar 7, 2021 at 07:24 AM, Andy Crawford wrote:
That also adds the capability for detection without dealing with gluing the 10k resistors on axils. Anything that keeps me from having to do that tedious task is a good thing. 
Off topic but I have been working on a detection scheme as well as this decoupling one. See my response on Feb 19 to the Trainboard/DCC thread "Different way to do detection".

George


Re: Remote Decoupling

George Hofmann
 

Wow! Now you're talking!
I was going to suggest the Nitinol wire as an actuator solution. Nice to see that you are ahead of me on that.
Regarding the air hose connection I was thinking that the metal coupler would be adequate. It of course requires that a wire be connected to it somehow which is a little issue. There is the possibility of combining the two connection ideas such that a return circuit is available. This would negate track pickups in each car which is huge.
Also since I published this idea I realized that a simple pulse train could be improved on. Instead send a train of pulses synchronized with the DCC signal as a multibit message containing a header, a byte representing the car count, followed by a CRC. This could be sent many times for redundancy.
Processing in each car could be handled by a small microcontroller such as an ATtiny85.
The idea of triggering sounds from the cars is brilliant! Hearing a coupling sound coming from the loco when the actual action was 5 cars back forced me to turn off the sound.
Pretty sure you are on the right track so to speak. Carry on.

George
Edgewood WA


Re: Remote Decoupling

Andy Crawford
 

I've been playing with this for some time, however I had been distracted by furthering the layout build lately and hadn't returned to the project. My thoughts had been adding this capability to locomotives only, as there's a decoder already there to actuate it. I do really like the pulse idea, and as I use the magnetic air hoses, I don't think this would be too difficult to replace the rubber hose with very flexible decoder wire to provide the "one wire" system for sending pulses down the train length. After reading that idea some days ago I've taken a stab at a simple FIFO circuit concept that could be installed in each car, and I think I can easily get that circuit down small enough to be hidden on the bolster or direction on the truck cross member. That puts it right where the track power is and I simply need a single wire going from the center beam to the truck, and back up toward the far end of the car, for the pulse actuation. That also adds the capability for detection without dealing with gluing the 10k resistors on axils. Anything that keeps me from having to do that tedious task is a good thing. This also prepares me for on car sound effects, wheel squeal and "clacking" that could more easily be dealt with than requiring a DCC decoder and requiring the consisting function. One could easily send the pulse to trigger that sound effect thru to a small piezo speaker. That would also be easy to produce the coupler clank or air release sounds, by just actuating when the "air hose" makes electrical contact, or when the air hose breaks contact to have the air release sounds. Very nice I think.

Now, as to uncoupling. I've only played with this, and not installed it on a car. However, I was able to use the eyehook in the bearing thru the top plate of the coupler, where the cut lever is installed. I bent a cut lever out of Nitinol wire (aka Memory Wire). It did require more length to move as much as I required to move the distance I desired, but further testing would refine this. In testing I just added more wire, hidden in the underframe, and put it into one position for uncoupling and another for the down position. My concern was the decoder required, and secondarily for the voltage required for Nitinol actuation. Now, with the simple pulse decoding "one wire" system, the voltage/amps required is of little concern, as there's plenty on the rails for that and would simply require a transistor to bias with the pulse decoder for the Nitinol actuation. I am slightly concerned about the added size of diodes to make a half rectifier or so to clean up the DCC signal to have straight power for powering the Nitinol uncoupling as well as the sound module. I do plan on going to "dumb rail" at some point, using the wireless DCC Tam Valley used to sell, but keeping power thru the rails with simple DC, and caps in the loco's. I still believe I can get this pulse decoder with simple sound prom down to fit in the truck or bolster. The piezo speaker might be more concern to fit, but I don't need much sound so it should be quite small. However the sound is beyond the scope of this pulse decoder activated uncoupling discussion.

The Nitinol did perform the uncoupling. There are other mitigating factors on if this is the right solution for everyone, but just adding my $0.02 and my experience that Nitinol appeared to function for me. And I'm following closely for any further discussion on the pulse decoding and FIFO buffer electronics. I've looked at some preliminary design concepts for this, and I may go further as I get some time and the wild hair. First I'm gonna test and insure I can make my own magnetic "air hose's" and insure acceptable signal can be sent via that contact.


Sergent Engineering Coupler Installation List

Riley Kinney
 

Good morning all,

Recently I asked the question, is there a list of models and what couplers fit them?  I had not realized there was a small list on the Sergent Engineering website but I am running with that list to get more information. 

What I am offering to the groups both here and the FB group is to add to this small list and make it available for everyone in both groups. 

What I need from you, the guys that have installed the couplers, is information like what is in the Sergent list that I have attached.

I added Level to separate out Genesis, Ready to Roll, and Roundhouse for Athean, for example.   For the Specific Model column, if you can include the model number as well that would be great. More information is better.

I can take the information from you however you want...written out in a message or email; or in an actual Excel file or something similar.   I will update the list as people let me know the information for a model not on the list.

Email to me at thunderhawk261@... so to keep these emails separate from my user email address.

 

Thanks

Michael


 

 


Re: Slotted Knuckles...

Jeff Ford
 

Thanks Dale.

-Jeff Ford
Sanger, TX


request to join group

Edmund Nadolski
 

Hi,

I would like to request membership in the Sergent Engineering group. I
am using the Sergent couplers for my Proto:87 models.

Thanks,
Ed


Re: Slotted Knuckles...

Dale Buxton <dbtuathaddana@...>
 

Buried in the information on Sergent’s web site, Frank states that the coupler knuckles can be notched. As per the early versions at the transition away from link and pins and the logging industries practices. Go to the Q&A area of Sergent’s web site and read everything there.

Dale Buxton

On Tue, Mar 2, 2021 at 18:00 Jeff Ford <sectioncar@...> wrote:
Good evening gang,

Q: Has anyone experimented with doing slotted knuckles for the early knuckle coupler era and, if so, what were the results?

For those of you unfamiliar, these are knuckles with a horizontal slot cut to accommodate the transition period from link and pin to automatic couplers at the turn of the 20th century. For the Sergent line of products, these would most likely be applied to Sharon couplers. 

Thanks,
-Jeff Ford
Sanger, Texas

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