Date   
Re: For Sale: EC64 and RN87K (and other stuff)

John Degnan
 

If the EC64 couplers are the NEW (improved) style than I'll take them.  If they are the old (original) style, I don't want them.

Thanks.


John D


On January 18, 2020 at 9:18 PM Jeremy Jordan <copperrange@...> wrote:

No longer have use of these items and want them to go to a good home. Please contact me off list if interested.

Lot 1: S Scale *(sold as a group only please)
FOUR unopened packages of EC64 (two pair) couplers (made early 2K)
One opened package of EC64 (complete)
MS Uncoupler

Lot 2: HO Scale *(Sold as a group only please)
2x RS2P87 Metal Pocket for stub shank coupler
1x AFRS Assembly fixture
2x RS1P87K Sharon Stub Shank Coupler
1x AFRN Assembly Fixture for RN87K/RNC87K
2x RN87K Sharon with Draft Gear (three pair each)
2x Ball Spring Pack for Sharon
1x MS Uncoupling Wand

 

Re: For Sale: EC64 and RN87K (and other stuff)

Terry Van Winkle
 

Hi Jeremy,

I would like to purchase the S scale couplers.

Terry Van Winkle

 

From: SergentEngineering@groups.io [mailto:SergentEngineering@groups.io] On Behalf Of Jeremy Jordan
Sent: Saturday, January 18, 2020 9:18 PM
To: SergentEngineering@groups.io
Subject: [Sergent Engineering] For Sale: EC64 and RN87K (and other stuff)

 

No longer have use of these items and want them to go to a good home. Please contact me off list if interested.

Lot 1: S Scale *(sold as a group only please)
FOUR unopened packages of EC64 (two pair) couplers (made early 2K)
One opened package of EC64 (complete)
MS Uncoupler

Lot 2: HO Scale *(Sold as a group only please)
2x RS2P87 Metal Pocket for stub shank coupler
1x AFRS Assembly fixture
2x RS1P87K Sharon Stub Shank Coupler
1x AFRN Assembly Fixture for RN87K/RNC87K
2x RN87K Sharon with Draft Gear (three pair each)
2x Ball Spring Pack for Sharon
1x MS Uncoupling Wand

For Sale: EC64 and RN87K (and other stuff)

Jeremy Jordan
 

No longer have use of these items and want them to go to a good home. Please contact me off list if interested.

Lot 1: S Scale *(sold as a group only please)
FOUR unopened packages of EC64 (two pair) couplers (made early 2K)
One opened package of EC64 (complete)
MS Uncoupler

Lot 2: HO Scale *(Sold as a group only please)
2x RS2P87 Metal Pocket for stub shank coupler
1x AFRS Assembly fixture
2x RS1P87K Sharon Stub Shank Coupler
1x AFRN Assembly Fixture for RN87K/RNC87K
2x RN87K Sharon with Draft Gear (three pair each)
2x Ball Spring Pack for Sharon
1x MS Uncoupling Wand

Re: Assembled Sergent Couplers available

David Colvin
 

Right now, I'm going to see about getting some out and take pics first.
I did lightly file each bearing depression and apply graphite pencil lead to the bearing depression and coupler parts during assembly to ensure excellent/reliable working condition.  I've got a young fellow who has agreed to pull them out so as we get that process started, I'll be able to give an accurate number for interested parties.  I know I have regular and lower shelf couplers.  Bought several 6 packs and two bags to 144 lot.

Again, I really like the action/look.  However, having over 30 years of weekly operating sessions under our belts, there are some operating styles and schemes that simply may not be appropriate for these.  Thankfully, we have choices to fit multiple needs.  This decision was not made lightly or at the spur of the moment.

Re: Assembled Sergent Couplers available

Dale Kritzky
 

You should keep your Sergents and not worry about the people in your group, I have 1 guy  in my group That thinks Sergents are "evil" so he just doesn't come to my house, none of my people are ever going to change over to Sergents ,but most of the nay sayers actually enjoy using them. It's just a learning curve for operations and all operations are different, don't let someone else dictate how your rr should be. Dale



On January 14, 2020, at 1:51 PM, David Colvin <djc148@...> wrote:


I did a test project of about 200 Sergent couplers or so.  I enjoyed the look and handling of the couplers, but my regular operators were not as enthused due to age, not wanting to change, etc.

I will be taking them off the cars soon and looking for a happy home for them.  They are lower shelf and double shelf couplers (a few).  Weathered, etc.  I applaud the group's effort to continue the work and think they have a very fine place in the hobby.

David C

Re: Couplers

Kevin Packard
 
Edited

Anyone who is interested in testing out the printed couplers, go ahead and email me off the group with your information and I'll see if I can get some sent out this coming week.  It'll be one fret upper+lower per person, so enough to do six couplers total.  That should be enough to test two cars worth and have spares in case you break something or mess it up.  

I can't provide knuckles, balls, or springs.  Those will have to be on your own.

Here's a quick video I took with a set of couplers I just assembled.  The resin is Elegoo Gray and it is fully cured.  I slightly enlarged the ball hole, and slightly enlarged the knuckle holes to more freely move on the pins.  You can see the normal action with smooth coupling and uncoupling.  Also note the strength when pressure is applied.  I was pulling pretty hard here.

https://youtu.be/5cYwhZpQbWA

-Kevin

Re: Couplers

Dale Kritzky
 

I'm game to try 3d print couplers. Dale.



On January 14, 2020, at 1:24 PM, "Aaron Heaney via Groups.Io" <wolfhunt1987@...> wrote:


Kevin 

I would be interested in testing your couplers but I need type H's. Because the road and time period I model has them between Cab units and on streamlined passenger equipment. 

Aaron Heaney 



Sent from my Verizon, Samsung Galaxy smartphone


-------- Original message --------
From: Kevin Packard <kevinpackard@...>
Date: 1/14/20 12:22 PM (GMT-05:00)
Subject: Re: [Sergent Engineering] Couplers

Josh, I think that's a great idea.  Perhaps I can print off a bunch of frets and send them out to a few folks to try?  We can then pool our knowledge and hopefully find the best way to assemble them, so operation is consistent.  Also, that would allow testing in variety of environments.  Lots of testing is the only way we're going to find out if printing is resin is really a viable option.

I'll work on getting a bunch of frets printed up this week.  Let's go with lower shelf type F's, since it appears that's what most people need.

-Kevin

Re: Assembled Sergent Couplers available

Cliff
 

Interested in a few sets of double shelf couplers myself. 

Re: Assembled Sergent Couplers available

Paul Dallard
 

How much for the lot?

An insincere and evil friend is more to be feared than a wild beast; a wild beast may wound your body, but an evil friend will wound your mind. - Buddha



On Jan 14, 2020, at 13:51, David Colvin <djc148@...> wrote:

I did a test project of about 200 Sergent couplers or so.  I enjoyed the look and handling of the couplers, but my regular operators were not as enthused due to age, not wanting to change, etc.

I will be taking them off the cars soon and looking for a happy home for them.  They are lower shelf and double shelf couplers (a few).  Weathered, etc.  I applaud the group's effort to continue the work and think they have a very fine place in the hobby.

David C

Re: Assembled Sergent Couplers available

Keith Getter
 

David,

Please contact me off list if you would. 

Thank you,
Keith


On Jan 14, 2020, at 13:51, David Colvin <djc148@...> wrote:

I did a test project of about 200 Sergent couplers or so.  I enjoyed the look and handling of the couplers, but my regular operators were not as enthused due to age, not wanting to change, etc.

I will be taking them off the cars soon and looking for a happy home for them.  They are lower shelf and double shelf couplers (a few).  Weathered, etc.  I applaud the group's effort to continue the work and think they have a very fine place in the hobby.

David C

Re: Assembled Sergent Couplers available

Kevin Packard
 

David - I'm sure you'll have no problem offloading these.  The double shelf in particular....lots of individual need those

Out of curiosity, are any of the lower shelf of the long-shank variety?

-Kevin

Assembled Sergent Couplers available

David Colvin
 

I did a test project of about 200 Sergent couplers or so.  I enjoyed the look and handling of the couplers, but my regular operators were not as enthused due to age, not wanting to change, etc.

I will be taking them off the cars soon and looking for a happy home for them.  They are lower shelf and double shelf couplers (a few).  Weathered, etc.  I applaud the group's effort to continue the work and think they have a very fine place in the hobby.

David C

Re: Couplers

Aaron Heaney
 

Kevin 

I would be interested in testing your couplers but I need type H's. Because the road and time period I model has them between Cab units and on streamlined passenger equipment. 

Aaron Heaney 



Sent from my Verizon, Samsung Galaxy smartphone


-------- Original message --------
From: Kevin Packard <kevinpackard@...>
Date: 1/14/20 12:22 PM (GMT-05:00)
To: SergentEngineering@groups.io
Subject: Re: [Sergent Engineering] Couplers

Josh, I think that's a great idea.  Perhaps I can print off a bunch of frets and send them out to a few folks to try?  We can then pool our knowledge and hopefully find the best way to assemble them, so operation is consistent.  Also, that would allow testing in variety of environments.  Lots of testing is the only way we're going to find out if printing is resin is really a viable option.

I'll work on getting a bunch of frets printed up this week.  Let's go with lower shelf type F's, since it appears that's what most people need.

-Kevin

Re: Couplers

Kevin Packard
 

Josh, I think that's a great idea.  Perhaps I can print off a bunch of frets and send them out to a few folks to try?  We can then pool our knowledge and hopefully find the best way to assemble them, so operation is consistent.  Also, that would allow testing in variety of environments.  Lots of testing is the only way we're going to find out if printing is resin is really a viable option.

I'll work on getting a bunch of frets printed up this week.  Let's go with lower shelf type F's, since it appears that's what most people need.

-Kevin

Re: Couplers

Josh Baakko
 

Kevin, I'd be interested in testing a few if you end up with some spare.  I'm in need of a few lower shelf only type F's.
Josh

Re: Couplers

Tim L
 

Frank did his own investment casting in-house.

- Tim

On 14/01/2020 02:59, Andrew via Groups.Io wrote:
Do we know if Frank did the investment casting in house or if he had a company do that part for him? I have asked several investment cast companies and so far haven't found one that is willing to do the size of parts/quantity of runs that I have inquired about.

Re: Couplers

Kevin Packard
 

Andrew, thanks for checking on that.  It would be interesting to see if PSC can/wants to do some smaller runs.  At least for type F's, double shelf, and long shank E's.

Dale - that is interesting regarding Formlabs.  I've never heard of creating a printed mold for die casting.  I'll have to look into that and see the cost associated with it.



On another note, my Siraya Tech Blu resin came in today and I ran a test batch to see what the results were.  First off, I did confirm like Frank said that these parts can and should be printed without supports.  I aligned the fret directly on the plate and they printed great.

Blu is very viscous and I had to keep a space heater going the whole 2.5 hours for it to flow properly.  It prints fine on the Elegoo Mars, which means it should be fine on any other LCD-type printer.  Detail capture was good, no obvious distortion noted.  It actually is more of a green color than blue, go figure.




It's hard to make out details with it being translucent.  I prefer the solid gray of the standard Elegoo resin.  I set up a real curing station this time with a proper curing light in the right wavelength (405 nm), and cured on a turntable for 30 minutes.  After curing I tested the pieces.  Blu definitely has some strength to it, and more flexibility than the Elegoo gray.  I'm not sure I like the flexibility part though.  

Despite a long cure though, the resin remained slightly tacky to feel.  Assembling a ball inside is going to be a real problem.  I honestly don't know if Blu is the right product for this application.  I'll keep messing with it and see if it improves.

I did, however, run my other coupler pieces from my previous gray print through the curing cycle and they feel great!  The Elegoo gray hardened right up and feels very solid.  No tackiness or stickiness anywhere.  They now assemble easier and are very strong without the large amount of flex that Blu is showing right now.  I'm leaning towards using Elegoo gray for most of my tests going forward.  I can say with some confidence that after a proper cure the Elegoo gray couplers feel very strong and stout.  The only way they will break is by dropping the model or dropping something on the coupler such that it snaps at the shaft.  Otherwise they feel sturdy.

-Kevin

Re: Couplers

George
 

Might be worth a call to PSC to see if they could cast them.

George Sebastian-Coleman
11 Taine Mountain Rd.
Unionville, CT 06085



On Jan 13, 2020, at 7:59 PM, Andrew via Groups.Io <a15andrew15@...> wrote:

[Edited Message Follows]
[Reason: Pricing still on Sergent Website!]

I reached out to Frank to see if he could provide more information. In the meantime, I have started searching around for other alternatives, as out of the 5 investment cast companies I talked to only one of them thought it might be possible to do it with their equipment. I will try and keep everyone updated on what I find.

Re: Couplers

Andrew
 
Edited

I reached out to Frank to see if he could provide more information. In the meantime, I have started searching around for other alternatives, as out of the 5 investment cast companies I talked to only one of them thought it might be possible to do it with their equipment. I will try and keep everyone updated on what I find.

Re: Couplers

Dale Buxton
 

Frank has only shared that he did the printed parts in house. He has not shared if he investment cast them in house or his casting partners that he used in the process.

On another note. Formlabs keeps sending me information on how you can print a die casting mold using their machines for low levels of production runs. Clearly the printed molds are not as durable as steel dies. But I think this might be another option for coupler production.

Dale B.

On Mon, Jan 13, 2020 at 8:59 AM Andrew via Groups.Io <a15andrew15=yahoo.com@groups.io> wrote:
Do we know if Frank did the investment casting in house or if he had a company do that part for him? I have asked several investment cast companies and so far haven't found one that is willing to do the size of parts/quantity of runs that I have inquired about.