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...
The Engine runs smoothly at 7 PSI ....we are happy
All the best
Chris
Re: Project: N&W class J on 5"gauge
Posted: Mon Jul 23, 2018 3:38 am
by Fender
Very smooth and impressive!
Re: Project: N&W class J on 5"gauge
Posted: Mon Jul 23, 2018 6:48 am
by Steamchris
Thank you Dan
Re: Project: N&W class J on 5"gauge
Posted: Mon Jul 23, 2018 1:45 pm
by Berkman
very neat! Are those air tanks between the frame ?
Re: Project: N&W class J on 5"gauge
Posted: Mon Jul 23, 2018 1:57 pm
by Steamchris
Hey Berkman,
yes, the pipe between the frame is the Air Tank.
Regards
Re: Project: N&W class J on 5"gauge
Posted: Mon Jul 23, 2018 3:25 pm
by Harold_V
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
Re: Project: N&W class J on 5"gauge
Posted: Tue Jul 24, 2018 12:27 am
by Steamchris
Hi Harold ,
thank you, next weekend first test with steam by a separately boiler.
Regards
Chris
Re: Project: N&W class J on 5"gauge
Posted: Wed Jul 25, 2018 5:09 am
by AusDan
Thats one smooth, quiet drive train...what kind of tolerances do you work too?
Re: Project: N&W class J on 5"gauge
Posted: Wed Jul 25, 2018 12:53 pm
by Steamchris
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
Re: Project: N&W class J on 5"gauge
Posted: Tue Sep 25, 2018 5:05 am
by Steamchris
Hi Guys,
just want to share some pictured about the progress om the lead Truck....
i will keep you informed about the next steps.
All the best
Chris
Re: Project: N&W class J on 5"gauge
Posted: Thu Nov 08, 2018 1:15 am
by Steamchris
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.
and here the upper part with the angles..
we have to laser the rockers , the 3D model is ready...
and a sample how it looks under the engine...
all the best
Chris
Re: Project: N&W class J on 5"gauge
Posted: Sun Nov 11, 2018 9:28 pm
by Rob Gardner
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.