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Author Topic: Narrow gauge tramway loco  (Read 7578 times)
Bernd
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« Reply #45 on: August 19, 2021, 08:51:15 AM »

I’ve never built locomotives and I admire your work.
It's beautiful !

Thank you very much.

It has taken many years on the acquisition of tooling and failed projects.

Bernd
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New York, Vermont & Northern Rwy. - Route of the Black Diamonds
Ray Dunakin
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« Reply #46 on: August 19, 2021, 10:45:02 PM »

Nice work!
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Visit my website to see pics of the rugged and rocky In-ko-pah Railroad!

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finescalerr
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« Reply #47 on: August 20, 2021, 01:38:07 AM »

Inspirational. -- Russ
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Hauk
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« Reply #48 on: August 31, 2021, 07:32:28 AM »

The same problem with the wheels. After a long back and forth and after looking up the various standards I had to realise that the wheels don’t fit any of these standards – they were too narrow. So I am going to design my own wheels. Here a first attempt. No idea, if these printed steel parts are machinable at all…:-\


The engine seems to be progressing very well!
But who printed the metal wheels?

And I´m looking forward to hear how the machining of the wheels turned out!
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Regards, Hauk
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”Yet for better or for worse we do love things that bear the marks of grime, soot, and weather, and we love the colors and the sheen that call to mind the past that made them”  -Junichiro Tanizaki

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Peter_T1958
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« Reply #49 on: August 31, 2021, 01:23:54 PM »

Hi Hauk

As you know, first I wanted to use Slaters wheels. But you can make it out here: they are more then one millimeter too wide.



The idea with the printed steel wheels came up when I received the price calculation from «my» watchmaker. A brass wheel with a steel tyre would have been far too expensive. So I printed the whole wheel in Fine Detail Steel at i.materialise.com.

Cheers, Peter


P.S.  Some minutes ago my watchmaker wrote me, that the milling of the two prototypes was successful. I am very keen to see the result and will post an update here as soon as possible!
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Barney
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« Reply #50 on: August 31, 2021, 01:54:10 PM »

Superb - the detail is excellent
Barney
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Hauk
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« Reply #51 on: September 01, 2021, 01:47:02 AM »


The idea with the printed steel wheels came up when I received the price calculation from «my» watchmaker. A brass wheel with a steel tyre would have been far too expensive. So I printed the whole wheel in Fine Detail Steel at i.materialise.com.

Cheers, Peter


P.S.  Some minutes ago my watchmaker wrote me, that the milling of the two prototypes was successful. I am very keen to see the result and will post an update here as soon as possible!


I fully understand your concern for the wheels.
When you are going to dress up, the shoes are important!

Looking forward to see the machined wheels.
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Regards, Hauk
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”Yet for better or for worse we do love things that bear the marks of grime, soot, and weather, and we love the colors and the sheen that call to mind the past that made them”  -Junichiro Tanizaki

Remembrance Of Trains Past
Peter_T1958
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« Reply #52 on: September 01, 2021, 02:58:39 AM »

When you are going to dress up, the shoes are important!Looking forward to see the machined wheels.

And here they are. To me they look quite fine and so I ordered some plastic insulations from shapeways to put together one prototype wheelset. What do you mean with shoes? Brake shoes?

« Last Edit: September 01, 2021, 08:59:46 AM by Peter_T1958 » Logged

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finescalerr
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« Reply #53 on: September 01, 2021, 01:54:19 PM »

He is comparing wheels on a locomotive or on rolling stock to the shoes we wear. The wheels (i.e., locomotive "shoes") you produced really look good. -- Russ
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Hauk
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« Reply #54 on: September 02, 2021, 04:40:07 AM »

When you are going to dress up, the shoes are important!Looking forward to see the machined wheels.

And here they are. To me they look quite fine and so I ordered some plastic insulations from shapeways to put together one prototype wheelset.


The wheels look great!  Think I will try to test this route myself.
How well did the the dimensions of the printed parts compare with the STL-file you made?
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Regards, Hauk
--
”Yet for better or for worse we do love things that bear the marks of grime, soot, and weather, and we love the colors and the sheen that call to mind the past that made them”  -Junichiro Tanizaki

Remembrance Of Trains Past
Peter_T1958
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« Reply #55 on: September 02, 2021, 06:03:32 AM »

Hi Håvard

So stupid! I didn’t catch the saying with the shoe… Cry

It’s difficult to judge the accuracy of the dimensions after turning them on the lathe. As I can make out the wheel width is exactly 2.0 mm as drawn on the CAD program. And the inner wheel diameter (16.2 mm) matches exactly the drawing too. So I can’t find any shrinkage…

[/URL]
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"Siplicity is the ultimate sophistication" -Leonardo Da Vinci-

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Hauk
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« Reply #56 on: September 02, 2021, 07:37:43 AM »

Hi Håvard

So stupid! I didn’t catch the saying with the shoe… Cry

It’s difficult to judge the accuracy of the dimensions after turning them on the lathe. As I can make out the wheel width is exactly 2.0 mm as drawn on the CAD program. And the inner wheel diameter (16.2 mm) matches exactly the drawing too. So I can’t find any shrinkage…

[/URL]


That sounds promising! My only concern is the price. I got a quote based on a wheel center around 17mm in diameter, and it clocked in at around 35 USD.
How much did you pay for your parts?

(Don´t worry about the shoes, that was just me trying to be clever... Cool )
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Regards, Hauk
--
”Yet for better or for worse we do love things that bear the marks of grime, soot, and weather, and we love the colors and the sheen that call to mind the past that made them”  -Junichiro Tanizaki

Remembrance Of Trains Past
Peter_T1958
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« Reply #57 on: September 02, 2021, 08:03:31 AM »

Just that's the point: One wheel cost 20.36 € postal charges not included. But since the entire project with all its trials and errors has become incalculable... Roll Eyes
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"Siplicity is the ultimate sophistication" -Leonardo Da Vinci-

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Lawrence@NZFinescale
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« Reply #58 on: September 08, 2021, 11:21:56 PM »

This all looks really great.

On the issue of wheels and cost though:  It would be straightforward to resin print wheels in a castable material and then lost wax cast into bronze (or whatever).  Obviously you then need to machine and add a tire.

My experience doing this (and I've done quite a lot) is that it is much cheaper than the prices you mention.

Lawrence
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Cheers,

Lawrence in NZ
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« Reply #59 on: September 09, 2021, 12:55:36 PM »

Many thanks for your feedback! The difference to the other wheels is more then obvious and just that is the reason to follow this path!



@ Lawrence
As I do not have any machinery (Ok, a Proxxon drill and a soldering iron 😉) I have to bring all items to « my » watch maker and have to deal with his abilities. He didn’t wanted to do «such complicate things»! And of course, this way is not less expensive at all…





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"Siplicity is the ultimate sophistication" -Leonardo Da Vinci-

https://industrial-heritage-in-scale.blogspot.ch/
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