Another 2900 project...
Moderator: Harold_V
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- Posts: 463
- Joined: Sun Oct 23, 2005 9:27 am
- Location: Newbury, OH
Re: Another 2900 project...
Ward, what is the thickness of each plate? 1/8"?
Rob
Rob
Re: Another 2900 project...
The side plates are 10 gauge (.131) pickled and oiled steel.
After machining the side plates, they were then bent in a press and vice using various shaped dies. Ed did the forming work by eyeball, square, paper templates, and sharpie.
After machining the side plates, they were then bent in a press and vice using various shaped dies. Ed did the forming work by eyeball, square, paper templates, and sharpie.
Re: Another 2900 project...
That is impressive keep us up to date with the construction. I would like to see how the truck turns out.
Jim
Jim
www.northernsteam.com
Re: Another 2900 project...
Made the pedestals yesterday. A few more sessions and we can start welding pieces together.
Re: Another 2900 project...
Thought I would add a few pics of another trailing truck that is much nearer to completion than mine. This is the trailing truck Ed built for his Z-8 Challenger using the same method and techniques that we are employing on my trailing truck. It is a really nice piece of work and a testament to Ed's skill as a locomotive builder and fabricator. I hope mine turns out as well.
Re: Another 2900 project...
Been working on making the "eyebrows" - the inserts that are at the top of the journal box opening. The first picture shows one being carved out of a block of steel. Had to massage the openings in the frame a bit with a file but the eyebrow fit great. Drilled and tapped the pedestals and made the pedestal binders. Busted 1 drill bit during the process so things (naturally) took a lot longer than expected.
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- Posts: 463
- Joined: Sun Oct 23, 2005 9:27 am
- Location: Newbury, OH
Re: Another 2900 project...
Ward, are these "eyebrows" applied to only the visible side of the side frame?
Rob
Rob
Re: Another 2900 project...
Rob - We made 8 eyebrows so "yes" they are installed on the inside of the frame as well. I thought that maybe we didnt need them on the inside where they were not seen but Ed said they needed to be there.
Finished machining the frame openings so the pedestals would fit right. Just need to trim a bit off the bottoms of the "eyebrows" and everything will fit together as it should. Started working on a brake hangar bracket that mounts to the face of the frame. We are getting close to being able to start welding pieces together. Forgot my camera so no pics this time.
Finished machining the frame openings so the pedestals would fit right. Just need to trim a bit off the bottoms of the "eyebrows" and everything will fit together as it should. Started working on a brake hangar bracket that mounts to the face of the frame. We are getting close to being able to start welding pieces together. Forgot my camera so no pics this time.
Re: Another 2900 project...
Still making the various pieces that will be welded into the side plates. Here is where we are currently at.
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- Posts: 463
- Joined: Sun Oct 23, 2005 9:27 am
- Location: Newbury, OH
Re: Another 2900 project...
Walt, I'm just guessing that the eyebrows help stiffen the side frames of the trailing truck. So hey, we're ready for your next update!
Rob
Rob
Re: Another 2900 project...
We started making the gingerbread for the frames and began with the oval cutouts as they are the hardest to make. Ed's method is to machine the rounded edge profile onto a separate piece of steel that can then be inserted into the hole and welded into the frame. Per my usual practice I had to make 5 pieces to get 4 good ones. Also welded in a boss for the spring rigging.
@Rob Gardner - I suppose the eyebrows will stiffen the frame but their primary purpose is for looks. I had to spend a while hand filing them to get them to blend into the pedestals. Once the pedestals and the top and bottom closure plates are welded into the side plates the frame will be very rigid. It is already pretty stiff just clamped together.
@Rob Gardner - I suppose the eyebrows will stiffen the frame but their primary purpose is for looks. I had to spend a while hand filing them to get them to blend into the pedestals. Once the pedestals and the top and bottom closure plates are welded into the side plates the frame will be very rigid. It is already pretty stiff just clamped together.
- Donhost4449
- Posts: 120
- Joined: Tue Oct 13, 2009 8:05 pm
- Location: Vacaville, CA
Re: Another 2900 project...
I was at Ed's on Sunday, as he helped with a project I am working on. Got a chance to look over your work, and see the Challenger's trailing truck first hand. Absolutely beautiful! The bolt-together frame for your locomotive is impressive. Keep up the good work!
Chris Donhost
Vacaville, CA
Chris Donhost
Vacaville, CA
Building a Fitchburg Northern (build log): www.chaski.org/homemachinist/viewtopic.php?f=45&t=107249
My YouTube Videos: www.youtube.com/user/donhost4449/videos
My YouTube Videos: www.youtube.com/user/donhost4449/videos