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| Shay Locomotive |
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| Dan Rowe:
Ron thanks for the support. I got a bit of shop time for paint. The top frame is the Mapleton the bottom frame is the Dulong. I really hate to paint but I had to get to it some time. Dan |
| Dan Rowe:
I am making headway on reassembly of the frames after painting them. The Mapleton end timbers are nearly complete. I have to cast up the push pole pockets and add them. The Mapleton end timbers are not typical Shay construction. The L angle stiffners were not normally used. The Dulong end timbers when complete will show the typical Shay construction. My new plan for the carriage bolts is to use 1.2mm nickle silver optical screws. They come with a cheese head with no slot. I just rivet the heads and trim to length. I was using 3/64" steel rivets that I was threading 00-90... that was a lot of work for not really satisfying results. The nickle silver 1.2mm nuts are 2.2mm AF which is a bit large for a 1.2mm bolt. I made a test mandrel to see if it was simple to cut them down to 5/64" using my 24 pin 5C indexer. This worked so I made a mandrel with matching 3/16" hex ends. The flat on the top matches the key on my 3/16" hex collet which has points up when the indexer is at zero. I drilled a hole so I could install a replaceable 1.2mm screw to mount the nut. The other bit in the photo is a hex file button to reduce the nuts with a file. That works fine but it is slow and after I dropped the third one never to be seen again :doh: I needed a new method. Here is a photo of my small bolt choices. Top-- 12 BA the bolt head is 2.5mm and larger than the BA standard. Second--00-90 brass bolt with 5/64" hex. Third--1.2mm optical screw with 2.2mm nut. Fourth--1.2mm optical screw with riveted head and 5/64" nut. Fifth--1.2mm brass with 5/64" nut Sixth--3/64" steel rivet with 00-90 thread Bottom--1.2mm shop made bolt with 5/64" hex head and 5/64" square nut. I am using a small press to rivet the heads of the optical screws. The scrws are 9/16" long so I drilled a 1.2mm hole in a 1/2" block of steel. To eject the finished screw I just press the die on a flat hard surface an screw pops out. Here are some fancy jewelry items that have 1.2mm threaded holes. There is all sorts of studs available including skulls and spiders. Dan |
| saw:
Nice work, you have an very intressting project here :thumbup: :thumbup: |
| BK:
Wow! I'll be following this one for sure, my great grandfather and his brothers ran 2 Shays and a climax at their sawmill at Canungra Queensland AU. |
| Dan Rowe:
Many thanks for the photos. Very interesting that is S/N 2478 which was built to the same plan as both Mapleton Tramway Shays. I included the steam bracket supplemental drawings for all the gauges built in the drawings that were in "Steam in the Garden". So 42" gauge should be no issue. Dan Edit on closer inspection the top photo is S/N 2371 as it was #3 the lower photo is of course the Climax. |
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