Date   
Re: 3D printed top/upper shelves, coupler boxes

David Olsen
 

Ryan, that's fantastic work, as always! I really like what you've done with the draft gear. Nick Molo's parts have been a huge help to mean in getting closer to the realism that I strive for in my models, but these sorts of parts that are tailored for Sergent couplers are another great option. I've been meaning to order some of your Type E coupler boxes and will do so shortly. Most of my CSX diesel and freight car modeling subjects seem to use lower shelf Type Es - it's like they did a big conversion in the mid-'90s from standard Es to lower shelf.  There is this one oddball - not sure why they put double shelf couplers on a 50' box car:

CSXT 502490:

I need to get on the ball and order a 144-pack of SBE couplers.  Thanks for the update on your projects, Ryan.  Do you mind if I share this on the Sergent Facebook page?  I'm not sure if you're a member on there...

On Sat, Sep 28, 2019 at 10:29 AM Todd Fisher <tftrainman1@...> wrote:
That is awesome, how well to they function with the other couplers? Also have you put into any thoughts of doing the type Fs? While I have many tank cars that need the double shelfs I also have an entire coal train that needs the type F couplers. I've been looking all over with no luck finding any. 
 
Todd, if you're not on Facebook, Ian Clasper has been doing some really interesting things with 3D printing based on Sergent's designs.  He has created plastic drawbar versions of Type F coupler, which represents two Type Fs coupled together.  One has a solid shank that fits over the usual mounting pin in the coupler pocket, while the other has an open end that clips into the pocket on the next car.  He's tested them, and they seem to hold up well.   He did the same thing with the standard Type E design.  I'm attaching two photos.  Ian has a Shapeways store, but he's only selling the couplers directly right now (I think he's using a different 3D printing service for them, or maybe his own printer).  I think they're a great economical alternative to buying and assembling a unit train's worth of real Sergents.  When I get around to it (unit coal cars aren't a priority for me right now), I'd like to use his drawbars to make sets of maybe 6 or 10 cars, with real Sergents on each end.

Dave Olsen
Carlisle, PA



Re: 3D printed top/upper shelves, coupler boxes

Todd Fisher
 

David I am on the Facebook group and have seen Ian's work and it is great work. However I am looking for operating couplers due to the scope of my operations on the model railroad. 


On Sat, Sep 28, 2019, 11:12 AM David Olsen <3acr.scout@...> wrote:
Ryan, that's fantastic work, as always! I really like what you've done with the draft gear. Nick Molo's parts have been a huge help to mean in getting closer to the realism that I strive for in my models, but these sorts of parts that are tailored for Sergent couplers are another great option. I've been meaning to order some of your Type E coupler boxes and will do so shortly. Most of my CSX diesel and freight car modeling subjects seem to use lower shelf Type Es - it's like they did a big conversion in the mid-'90s from standard Es to lower shelf.  There is this one oddball - not sure why they put double shelf couplers on a 50' box car:

CSXT 502490:

I need to get on the ball and order a 144-pack of SBE couplers.  Thanks for the update on your projects, Ryan.  Do you mind if I share this on the Sergent Facebook page?  I'm not sure if you're a member on there...

On Sat, Sep 28, 2019 at 10:29 AM Todd Fisher <tftrainman1@...> wrote:
That is awesome, how well to they function with the other couplers? Also have you put into any thoughts of doing the type Fs? While I have many tank cars that need the double shelfs I also have an entire coal train that needs the type F couplers. I've been looking all over with no luck finding any. 
 
Todd, if you're not on Facebook, Ian Clasper has been doing some really interesting things with 3D printing based on Sergent's designs.  He has created plastic drawbar versions of Type F coupler, which represents two Type Fs coupled together.  One has a solid shank that fits over the usual mounting pin in the coupler pocket, while the other has an open end that clips into the pocket on the next car.  He's tested them, and they seem to hold up well.   He did the same thing with the standard Type E design.  I'm attaching two photos.  Ian has a Shapeways store, but he's only selling the couplers directly right now (I think he's using a different 3D printing service for them, or maybe his own printer).  I think they're a great economical alternative to buying and assembling a unit train's worth of real Sergents.  When I get around to it (unit coal cars aren't a priority for me right now), I'd like to use his drawbars to make sets of maybe 6 or 10 cars, with real Sergents on each end.

Dave Olsen
Carlisle, PA



Re: 3D printed top/upper shelves, coupler boxes

Ryan Harris
 

Thanks, Todd. The shelf doesn't affect the operation of the coupler at all, other than limiting the ability of connected cars to separate. The uncoupling function still works as intended with one of the Sergent uncoupling wands. The coupling function is unaffected by the shelf as well.

I don't think using Shapeways to print in acrylic would result in very durable couplers, so I haven't attempted to print any operating couplers. Ian's part that Dave posted below looks like a good solution for F couplers. I would prefer dummy couplers that look like F couplers but can be separated. The trouble with that is that the couplers interlock, so the design would have to be modified to allow the couplers to slide past each other.

I can only imagine the time is coming when the wax printing problem is solved without Frank chasing down an expensive rabbit hole and the couplers are available once more. I have enough F couplers for locomotives but not many cars. Like you I have coal hoppers and gondolas in need of proper couplers.

--
Ryan Harris
Fort Worth TX

Re: 3D printed top/upper shelves, coupler boxes

Ryan Harris
 

Feel free to share all you want, Dave. I'm not on Facebook so this group is the only place I've posted anything.

I've seen SE couplers on several cars they "shouldn't" be installed on, including boxcars and reefers. They are becoming more and more common on pellet hoppers, too. And SBE couplers have been installed on many cars. 

I am going to buy a big pack of the SBE couplers soon. I still have quite a few tank cars that need proper couplers. For now I have a couple dozen of the SBE that I got in small packs to convert.

I like Ian's idea for unit trains. They look very good. I have an idea for making rotary couplers using a variation of the Type F box I designed, but I am not very adept at manipulating Frank's CAD files. 

--
Ryan Harris
Fort Worth TX

Re: 3D printed top/upper shelves, coupler boxes

Todd Fisher
 

Ryan I certainly hope you're right about the Fs coming back into production. Frank really hasn't said anything in regards and i feel like he's just expecting someone else to take over so he doesn't have to keep trying to find a fix. I've got many many couplers I'm in need of that aren't in stock. Long shanks, doubles, and type Fs 


On Sat, Sep 28, 2019, 7:47 PM Ryan Harris <ryan.harris@...> wrote:
Feel free to share all you want, Dave. I'm not on Facebook so this group is the only place I've posted anything.

I've seen SE couplers on several cars they "shouldn't" be installed on, including boxcars and reefers. They are becoming more and more common on pellet hoppers, too. And SBE couplers have been installed on many cars. 

I am going to buy a big pack of the SBE couplers soon. I still have quite a few tank cars that need proper couplers. For now I have a couple dozen of the SBE that I got in small packs to convert.

I like Ian's idea for unit trains. They look very good. I have an idea for making rotary couplers using a variation of the Type F box I designed, but I am not very adept at manipulating Frank's CAD files. 

--
Ryan Harris
Fort Worth TX

Re: 3D printed top/upper shelves, coupler boxes

Timothy Cann
 

Ryan: What do you need to “manipulate” Franks CAD files, or perhaps better asked, what kind of manipulating are you looking for? I’d be glad to try to help you if you want me to.... no strings.... just available (retired) with extensive SolidWorks and STL experience. 
Tim


On Sep 28, 2019, at 5:27 PM, Todd Fisher <tftrainman1@...> wrote:


Ryan I certainly hope you're right about the Fs coming back into production. Frank really hasn't said anything in regards and i feel like he's just expecting someone else to take over so he doesn't have to keep trying to find a fix. I've got many many couplers I'm in need of that aren't in stock. Long shanks, doubles, and type Fs 

On Sat, Sep 28, 2019, 7:47 PM Ryan Harris <ryan.harris@...> wrote:
Feel free to share all you want, Dave. I'm not on Facebook so this group is the only place I've posted anything.

I've seen SE couplers on several cars they "shouldn't" be installed on, including boxcars and reefers. They are becoming more and more common on pellet hoppers, too. And SBE couplers have been installed on many cars. 

I am going to buy a big pack of the SBE couplers soon. I still have quite a few tank cars that need proper couplers. For now I have a couple dozen of the SBE that I got in small packs to convert.

I like Ian's idea for unit trains. They look very good. I have an idea for making rotary couplers using a variation of the Type F box I designed, but I am not very adept at manipulating Frank's CAD files. 

--
Ryan Harris
Fort Worth TX

Re: 3D printed top/upper shelves, coupler boxes

Ryan Harris
 

Hi Tim. My old version of AutoCAD can't do much with the files as is, but I was able to redraw the upper shelf using Frank's CAD file as a model. The Type F is a much bigger undertaking for me since I'd have to redraw it entirely.

Essentially what I'd like to do is attach the knuckle to the coupler body in the closed position, then modifiy the coupler to eliminate any interference between coupled pairs. I'd do this by moving the knuckle slightly outward from the coupler body (away from the shank). Then I'd move the female portion of the interlocking tab backward toward the shank so the male and female tabs on coupled pairs do not interlock. Finally, I'd remove any interference of the lower shelf between a coupled pair. The idea is that the couplers would look like Type F couplers, but they would be dummy couplers that can slide apart vertically. Then I'd make compatible shank and rotary shank versions.

--
Ryan Harris
Fort Worth TX

New file uploaded to SergentEngineering@groups.io

SergentEngineering@groups.io Notification <SergentEngineering+notification@...>
 

Hello,

This email message is a notification to let you know that a file has been uploaded to the Files area of the SergentEngineering@groups.io group.

File: Ryan Harris Zip.zip

Uploaded By: Timothy Cann

Description:
Description of possible way to modify type "F" couplers as you describe.

You can access this file at the URL:
https://groups.io/g/SergentEngineering/files/Ryan%20Harris%20Zip.zip

Cheers,
The Groups.io Team

Re: New file uploaded to SergentEngineering@groups.io

Ryan Harris
 

Thanks, Tim! That was quick. I'm at work now so I'll give it a look when I get home in the morning. 
--
Ryan Harris
Fort Worth TX

Re: 3D printed top/upper shelves, coupler boxes

Timothy Cann
 

Hi Ryan, I’ve uploaded a ZIP file to the group Files containing a possible solution to your F coupler modification. Tim


On Sep 28, 2019, at 8:00 PM, Ryan Harris <ryan.harris@...> wrote:

Hi Tim. My old version of AutoCAD can't do much with the files as is, but I was able to redraw the upper shelf using Frank's CAD file as a model. The Type F is a much bigger undertaking for me since I'd have to redraw it entirely.

Essentially what I'd like to do is attach the knuckle to the coupler body in the closed position, then modifiy the coupler to eliminate any interference between coupled pairs. I'd do this by moving the knuckle slightly outward from the coupler body (away from the shank). Then I'd move the female portion of the interlocking tab backward toward the shank so the male and female tabs on coupled pairs do not interlock. Finally, I'd remove any interference of the lower shelf between a coupled pair. The idea is that the couplers would look like Type F couplers, but they would be dummy couplers that can slide apart vertically. Then I'd make compatible shank and rotary shank versions.

--
Ryan Harris
Fort Worth TX

Re: New file uploaded to SergentEngineering@groups.io

Timothy Cann
 

Hi Ryan,

Attached is a PDF showing a FThkBot with the "shelf" removed.

Tim


-----Original Message-----
From: Ryan Harris <ryan.harris@...>
To: SergentEngineering <SergentEngineering@groups.io>
Sent: Sat, Sep 28, 2019 10:34 pm
Subject: Re: [Sergent Engineering] New file uploaded to SergentEngineering@groups.io

Thanks, Tim! That was quick. I'm at work now so I'll give it a look when I get home in the morning. 
--
Ryan Harris
Fort Worth TX

Re: New file uploaded to SergentEngineering@groups.io

Timothy Cann
 

Hi Ryan,

Attached is another PDF showing a pair of FC couplers (top view) with the shelves removed and clearance for a vertical decouple.

Tim


-----Original Message-----
From: Ryan Harris <ryan.harris@...>
To: SergentEngineering <SergentEngineering@groups.io>
Sent: Sat, Sep 28, 2019 10:34 pm
Subject: Re: [Sergent Engineering] New file uploaded to SergentEngineering@groups.io

Thanks, Tim! That was quick. I'm at work now so I'll give it a look when I get home in the morning. 
--
Ryan Harris
Fort Worth TX

Re: New file uploaded to SergentEngineering@groups.io

Timothy Cann
 

Hi Ryan,

Besides STL exports, I can also export to STEP or Parasolid file types.  According to Autodesk either of them can be imported:

https://knowledge.autodesk.com/support/autocad/learn-explore/caas/CloudHelp/cloudhelp/2016/ENU/AutoCAD-Core/files/GUID-F5CEE149-E2CA-481A-97DE-EB85FE62697D-htm.html

Tim


-----Original Message-----
From: Ryan Harris <ryan.harris@...>
To: SergentEngineering <SergentEngineering@groups.io>
Sent: Sat, Sep 28, 2019 10:34 pm
Subject: Re: [Sergent Engineering] New file uploaded to SergentEngineering@groups.io

Thanks, Tim! That was quick. I'm at work now so I'll give it a look when I get home in the morning. 
--
Ryan Harris
Fort Worth TX

Contacting Frank Sergent

Jason Borda
 

I have tried to contact Frank via the info@sergentengineering email on the website over the past several weeks. Has anybody had issues with this email lately? If anyone has another contact for Frank could you pass along or Frank if you still follow the group could you private message?


Thanks,
Jason Borda

Need Some EC87K Couplers- Please Read

Riley Kinney
 

As I grow older my ability to see and grasp the couplers parts has diminished; I am 71 years old. If you can spare any of this type of couplers I would gladly pay a premium for them.
Thank you for your consideration.

Riley Kinney

Re: Pending Membership

Steve Kramer
 

Hello,

 

My name is Steve Kramer.  I am a life-long raifan and model railroader.

I have been on the fence about converting my HO-scale fleet over from Kadee to Sergent couplers for years now.  I am hoping that this group can provide some insight, feedback and tips from current users of Sergent couplers.

 

Thank you,

Steve Kramer

 

3D Printing

Kevin Packard
 

Hi all, been a Sergent user for years now and am a huge fan of the looks and function of these couplers.  Unfortunately I've used up my small supply of lower shelf F's (for locomotives) and my extended shank lower shelf E's (for modern plate F cars and others).  These are couplers that I'll definitely need more of and I have my doubts that they will be produced again via Sergent Engineering.

I have a basic 3D printer at home that I've just started learning how to use.  It's an Elegoo Mars, and uses an LCD screen and UV light to print from liquid resin.  

I'm totally unexperienced with CAD work and can't figure out how to turn the drawings that Sergent released into something printable.  When I import into Meshmixer there are errors all over the place.  If I'm right this will keep it front printing correctly.  Anyone have some input on this?

My hope is that I can at least print the long shank uppers for now, and use those until someone figures out how to do it in metal again.  The cars they will be on won't be in a long and heavy train (max 15 cars) and so will not likely experience significant stress.  I plan on using my remaining lower shelfs, and standard Sergent knuckles and ball.  My understanding is that I can use different resins, and even mix resins to get the properties I want.....strength, slight flexibility, etc.

Thoughts?  I anyone has already converted the Sergent files into printable files it would be awesome to have those available for the rest of the group.  

-Kevin

Pending membership to Sergent Engineering IO Group

Ian Millard
 

Hi,

I have just requested to join your IO group.

I have been a user of Sergent couplers for many years after coming across them on the Proto:87 Stores site when I was contemplating going P87.

I use them exclusively and am always recommending them to other modellers.

Cheers,

Ian Millard

Pending membership

Andrew
 

Hi, I've been interested in Sergent couplers for a long time, and am interested in learning more about them. I'll be reading up ok tips and tricks for assembly as well as operations. Thanks! 

-Andrew