Project: N&W class J on 5"gauge

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Steamchris
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Re: Project: N&W class J on 5"gauge

Post by Steamchris » Mon Jul 23, 2018 12:52 am

Morning Guys,

in the last Week it was abel to use the CNC of my Company. I made the second Mainrod , same way i've shown in the Report. We've mounted the rod and started the Air compressor ...... look what happens...

https://youtu.be/IHEMVVrCLeA


The Engine runs smoothly at 7 PSI ....we are happy


All the best
Chris
The light at the end of the tunnel could be a train ;)

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Fender
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Re: Project: N&W class J on 5"gauge

Post by Fender » Mon Jul 23, 2018 3:38 am

Very smooth and impressive!
Dan Watson

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Steamchris
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Re: Project: N&W class J on 5"gauge

Post by Steamchris » Mon Jul 23, 2018 6:48 am

Thank you Dan
The light at the end of the tunnel could be a train ;)

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Berkman
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Re: Project: N&W class J on 5"gauge

Post by Berkman » Mon Jul 23, 2018 1:45 pm

very neat! Are those air tanks between the frame ?

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Steamchris
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Re: Project: N&W class J on 5"gauge

Post by Steamchris » Mon Jul 23, 2018 1:57 pm

Hey Berkman,

yes, the pipe between the frame is the Air Tank.

Regards
The light at the end of the tunnel could be a train ;)

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Harold_V
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Re: Project: N&W class J on 5"gauge

Post by Harold_V » Mon Jul 23, 2018 3:25 pm

Steamchris wrote:
Mon Jul 23, 2018 12:52 am
The Engine runs smoothly at 7 PSI ....we are happy
As you should be! That's a beautifully built engine. I'm overly impressed by how smoothly it runs.

H
Wise people talk because they have something to say. Fools talk because they have to say something.

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Steamchris
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Re: Project: N&W class J on 5"gauge

Post by Steamchris » Tue Jul 24, 2018 12:27 am

Hi Harold ,

thank you, next weekend first test with steam by a separately boiler.

Regards
Chris
The light at the end of the tunnel could be a train ;)

Health and Safety Notice

due to the current economic circumstances , the light at the end of the tunnel
has been switched off !

AusDan
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Re: Project: N&W class J on 5"gauge

Post by AusDan » Wed Jul 25, 2018 5:09 am

Thats one smooth, quiet drive train...what kind of tolerances do you work too?

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Steamchris
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Re: Project: N&W class J on 5"gauge

Post by Steamchris » Wed Jul 25, 2018 12:53 pm

Ausdan,

tolerances of what Kind of Parts do you mean?

Engine bed, Rods CNC milled so tolerances from point to point are very small nearly to zero , Bolts are polished to 0.01mm smaller then the roller bearings. Axels can move +/- 2mm, Main wheel is rigid.



Regards
Chris
The light at the end of the tunnel could be a train ;)

Health and Safety Notice

due to the current economic circumstances , the light at the end of the tunnel
has been switched off !

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Steamchris
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Re: Project: N&W class J on 5"gauge

Post by Steamchris » Tue Sep 25, 2018 5:05 am

Hi Guys,

just want to share some pictured about the progress om the lead Truck....

IMG-20180919-WA0008.jpg
IMG-20180919-WA0009.jpg
i will keep you informed about the next steps.

All the best
Chris
The light at the end of the tunnel could be a train ;)

Health and Safety Notice

due to the current economic circumstances , the light at the end of the tunnel
has been switched off !

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Steamchris
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Re: Project: N&W class J on 5"gauge

Post by Steamchris » Thu Nov 08, 2018 1:15 am

Hello Guys,


some work is done on the Engine Truck...

here you see the bottom of the truck and the half shells where the rockers sits.
IMG-20181105-WA0004.jpg
and here the upper part with the angles..
IMG-20181025-WA0010.jpeg
we have to laser the rockers , the 3D model is ready...
IMG-20181102-WA0028.jpeg
and a sample how it looks under the engine...
IMG-20181105-WA0005.jpg
all the best
Chris
The light at the end of the tunnel could be a train ;)

Health and Safety Notice

due to the current economic circumstances , the light at the end of the tunnel
has been switched off !

Rob Gardner
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Re: Project: N&W class J on 5"gauge

Post by Rob Gardner » Sun Nov 11, 2018 9:28 pm

Chris, all I can say is "WOW"! Wish I was this far along my C&O J-3a. Love seeing your construction techniques as the Greenbrier are of the same generation of steam as the N&W J's. Especially your pilot truck. Giving some good ideas, for sure.

Would love to see even more photos of the lead truck frame if you have any.

Thanks,

Rob

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