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Post by GregMiller on May 13, 2010 21:41:05 GMT -5
Finally made it back into the shop to work on the A3a. Finished the Pins for the expansion links (trunnions?) and SS in place. Used the black flux as recommended for SS and it worked very well. It feels good to finally have some progress to show.
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Post by grege on May 14, 2010 6:24:10 GMT -5
Looks great. Even small steps will eventually get it completed.
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Post by dickr on May 14, 2010 13:31:48 GMT -5
Small steps lead to big ones. Seems small but there's a lot of work in those small pieces. Thanx for sharing.
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Post by GregMiller on May 15, 2010 19:52:32 GMT -5
The cab floor is extended for the coal bunker in the A3a. Today I completed the floor support stringer as well as the Support Plate. The Cab Floor will eventually be sandwiched between.
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Post by GregMiller on May 24, 2010 21:53:44 GMT -5
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Post by grege on May 25, 2010 6:24:15 GMT -5
I'm glad it came out well after all that.
I can't quite tell, but it looks partly like the joint may have had too large a clearance. Screws not tight enough or chunks in the flux?
Could also have been torch size. That's a good bit of metal to get hot- particularly with the length of the running board to conduct heat away from the joint.
Greg
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Post by GregMiller on May 26, 2010 21:47:41 GMT -5
Running Boards are Complete.... and I am Happy with them!
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Post by Harlock on May 28, 2010 3:59:17 GMT -5
Lookin' real nice.
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Post by GregMiller on May 30, 2010 18:31:16 GMT -5
Side floor support silver soldered to the cross floor support and Cab Steps that I completed 11 months ago attached.
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Post by pkastagehand on Jun 1, 2010 13:49:22 GMT -5
I'm no expert but I would say that yes, with all that running board acting as heat sink, and based on the comment that it took a long time to get hot enough, that maybe you had a heat issue. I don't usually have that problem because I'm using an oxygen/acetylene torch (even though Kozo advises against it). Only once did I melt the brass; on one of the stanchion mounting brackets for the tender. My attempts with a propane torch have been dismal, but then I don't have a turbo torch or similar. Only the plumbers hardware store cheapy thing.
Paul
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Post by GregMiller on Jul 12, 2010 22:16:45 GMT -5
Finished up the Cab Floor and what I am calling the Bottom Member. The coal bunker wall will be soldered to the bottom member. I fabricated the Bottom Member in 2 pieces, then silver soldered them together after trimming off the excess length. Here is what the rough model looks like so far from the same view point. Rivets, top rail, etc still need to be added before fabrication can start.
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Post by grege on Jul 13, 2010 7:03:11 GMT -5
Wow! Very elegant solution. I might have to revisit my plans for the coal bunker...
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Post by pkastagehand on Jul 15, 2010 10:16:58 GMT -5
Great looking work on the A3. Nice modeling too; Solidworks?
Paul
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Post by GregMiller on Jul 15, 2010 14:57:02 GMT -5
Thanks Paul.
I used Alibre Standard Edition. It has recently been renamed to Alibre Design Personal Edition, or Alibre Design PE. I like it. I have used Autodesk Inventor, and find this as easy to use. I have not tried SolidWorks.
Greg
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Post by Harlock on Jul 17, 2010 2:36:07 GMT -5
Alibre is very similar to solidworks (it's designed to be a less expensive knock-off)
I use Solidworks, and for straightforward mechanical stuff, Alibre is probably just as good.
-Mike
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