Some good new to start out this month’s No. 11 progress report. Our on-line http://build11.wwfry.org on FundRazr has reached 76% of its goal for 2020, and we still have nearly four months to go. Eight individuals so far will be receiving bronze replicas of WW&F No. 7’s Baldwin Locomotive Works builder’s plates. In addition to funds flowing through the on-line site, donations are coming into the mailbox at the Alna post office. We are grateful for every dollar we receive. Thank you. Thank you.
The engineering team continues to meet weekly via Zoom. Recently, the team has been concentrating on the production of drawings for the tender. So far, Harold Downey has produced about 60 drawings of various details necessary for the water tank and coal space for No. 11.
In addition to the tender, a great deal of attention has been focused on the final details of the Request for Quotations packet that will be in the mail sometime in the next few days. The team has selected seven potential manufacturers of the cylinder half-saddles (shown below), driver wheel centers and other major cast components.
Harold Downey sent several photos of patterns he’s been making in his workshop at home in Austin, Texas. Among the photos is one that illustrates the complexity of not only pattern making, but also the complexity of castings parts.
This photo shows the parts necessary to cast the trailing truck journal boxes for No. 11. To start with, in pattern making, the maker must be able to visualize the part as a negative, similar to a photographic negative. He must see what’s around the part, rather than the completed part. To make the journal box, five separate pattern parts are necessary.
Here are two photos of another part that Harold has patterned, that of the rear truck swing link hanger.
The first photo shows the hanger as it would look as a completed casting, while the inset illustrates how the casting will be made using two parts of the same piece. Notice the two small holes in the left-hand piece, into which the two pegs are inserted to properly align the sections.
Now imagine how complicated making the patterns for the steam cylinder half-saddles will be. There are several interior passages for live and exhaust steam that must curve inside the casting to deliver the steam to the valve and allow the exhaust steam to exit. There are also several “lightening” areas to reduce the overall weight of this large part. It’s estimated each half-saddle will weigh about 1,500 pounds.
In other news, our bull riveter is back together. It was tested last weekend, and on Saturday, Alan Downey, along with Gerry and Carlos Steinke, plan to rivet the front ring to the new smokebox for No. 10. Carlos and Jerry completely overhauled the riveter during the spring, and this machine will have major role in the construction of No. 11, as well as in the manufacture of boilers for No. 10 and No. 11.