3/4" Scale J1e

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Asteamhead
Posts: 426
Joined: Tue Jul 31, 2012 1:59 pm
Location: Germany, Duesseldorf

Re: 3/4" Scale J1e

Post by Asteamhead » Mon Dec 02, 2019 5:43 pm

Hello dnevil,
Very nice details, too indeed 8) ! Thank you for posting :!:

Asteamhead

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JBodenmann
Posts: 2943
Joined: Sun Oct 26, 2003 1:37 pm
Location: Tehachapi, California

Re: 3/4" Scale J1e

Post by JBodenmann » Tue Dec 03, 2019 3:41 pm

Hello My Friends
Thank you for the compliments. The Zawarski Hudson is quite a fine model. The Coffin centrifugal pump and the Detroit lubricator are amazing. Where is this engine? Are there any more photos of it? Really the most to say the least!
Jack

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JBodenmann
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Joined: Sun Oct 26, 2003 1:37 pm
Location: Tehachapi, California

Re: 3/4" Scale J1e

Post by JBodenmann » Sun Dec 08, 2019 7:37 pm

Hello My Friends
Here is something you may find useful. This is a height gauge that can be used to lay out things on the locomotive such as running boards, and handrails and such. The base is just a bit of 1/8" x 3/4" cold rolled that was laying around. The rods are 3/16" stainless and there is a piece of brass with a couple set screws. The bottom strap is placed across the rails of the engine stand and the pointer can be adjusted up and down, or in and out to mark points on the loco. Just make sure the locomotive frame is parallel with the rails on the stand. This was used today to lay out the running boards as they will be the next part to be made. These engine had some really cool running board supports. The Nickel Plate Berkshires had very similar running board supports and I'm sure most modern steam had something similar. The Berks had six brackets and they were all different. These engine only had four, all different. These supports also held the air reservoirs, miscellaneous piping, and one also held the Franklin power reverse and the distributing valve. So here is a start on the simplest one. This is the front mount on the engineers side. It only held the air res. and some piping. As usual a card stock pattern was made first and checked for fit. Then two thicknesses of .050" brass were stuck together with #1-72 brass screws and it was roughed out with the band saw. The curved recess for the air res. was made with the boring head. After the shape is finalized they will be separated and a spacer silver soldered between them. They will also get some bosses for the studs that will hold them to the boiler. Then some round nose end mill work to make the recesses for the piping. There will also be some separate castings that hold the piping in place.
More to come.
Jack
Attachments
Guage1.jpg
Guage2.jpg
Rn.Bd.Spt.1.jpg
Rn.Bd.Spt2.jpg

Asteamhead
Posts: 426
Joined: Tue Jul 31, 2012 1:59 pm
Location: Germany, Duesseldorf

Re: 3/4" Scale J1e

Post by Asteamhead » Mon Dec 09, 2019 5:41 am

Hello Jack,
Good idea! Constructing the running board and all those supports at just the right height on both sides of the engine is a demanding job, indeed. Keep on posting your methods of making, please!

Asteamhead

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JBodenmann
Posts: 2943
Joined: Sun Oct 26, 2003 1:37 pm
Location: Tehachapi, California

Re: 3/4" Scale J1e

Post by JBodenmann » Sun Dec 15, 2019 8:57 pm

Hello My Friends
Managed to get a full day in the shop. It's been cold here lately. Todays high was about 38 degrees and the wind was really blowing. The shop was nice and warm :D The running board-air res. supports are quite a little puzzle. Here is what happened today. There are four of them, three are fairly simple. And two of the three are basically the same so I will only have to make three masters. The two on the fireman's side will be the same. One bracket will be a real fiddle though. That's the one that holds the Franklin power reverse and the distributing valve, in addition the the running board, air reservoir and several piping brackets. The top photo shows the main parts of the supports. There are two of each and they were fastened together for machining. They still need more machining but that will wait until they are silver soldered together. The last two photos show the part that will be curved to fit against the boiler. I like to lay things out with the Sharpie but still use the digital read out. The Sharpie helps to pick up any major screw ups with the mill. The little slots are 5/64" to accept the #1-72 studs that will hold them to the boiler. The prototype had 1-1/8" studs and that scales out to a #1 machine screw. The very top of these brackets with its #1-72 studs and nuts sticks up above the running boards. The rest of the running board supports are just bent up bar stock.
See you in the funny pages...
Jack
Attachments
Supports1.jpg
Supports2.jpg
Supports3.jpg

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