Build Locomotive 11 - October Update
We've been cooking up a brand new steam locomotive!
Here we are heating the lead truck equalizer during our Aug 13-15th work session. Gordon Cook, Harold Downey and Rick Sisson again used our flanging machine to form the “ears” at the end of the lead truck equalizer.
Drawing of the lead truck equalizer. Note the "ears" at the far end of the equalizer beam.
Harold had prepared the end of the equalizer by milling a ½” slot. We then heated the area, clamped the equalizer in the flanging machine and used a sledge hammer to drive a forming tool that we designed and assembled into the slot.
Harold forms the slot using the tool we designed.
After a succession of heats we completed the forming operations.
The completed equalizer "ears".
After allowing the equalizer to cool overnight, Joe Monty drilled and bored the hole that will receive a pin connecting the equalizer to the lead truck pivot pin.
Quentin Bethune was able to turn the lead truck pivot pin bushing, another component of the lead truck suspension.
Finally, Jason Lamontagne welded bosses to the lead truck lower radius bar. Harold machined these and Harold, Gordon and Rick match drilled the lead truck pedestals to the lower radius bar.
Harold machining the lead truck lower radius bar.
Rick and Harold drilling the lead truck pedestals of the lower radius bar.
During our September 10-12 work session, Gordon Cook brought components he had machined at home which will enable us to tram the locomotive. This entails running a wire from the center of the bore at the front of each cylinder to a point located at the rear end sill backer plate. The wire will be carefully aligned with the center of the cylinder bore and will provide a reference to locate, and machine, the driving box shoes and wedges.
The front of the cylinder. The wire will pass over the small brass pulley and be tensioned by fastening a weight to the wire.
At the rear of the frame a small brass bushing is used to precisely locate the taut wire.
Gordon also spent some time drilling holes in the forward frame to attach driver brake hangers.
Harold Downey and Rick Sisson were able to mill one of two slots in the transverse equalizer. These slots will be hot formed to form the required “ears” as we did last month for the lead truck equalizer.
Qunitin Bethune brought to the shop the lead truck pin that he machined at home. So, we had to tie the lead truck equalizer to the lead truck pin and bushing.
Rick Sisson drilled and reamed holes for, and attached, the lower radius bar cross tie. Noah MacAdam used his large mill to accurately place mounting holes in the lead truck frame. We positioned the lead truck frame on the lower radius bar to check the fit. Quentin will perform additional machining operations on the lead truck frame in his shop.
Harold and Rick formed the perimeter angle curved corners. Rick prepared the pieces and clamped them in position for welding. The perimeter angles are the last components included in the rear frame.
We are currently requesting quotations from foundries for piston, crosshead and rear couple components to be delivered next year. In order to expedite production, we are asking the foundries to source 3D printed molds which will add to our costs. Our 2024 fundraising is continuing! To date we have received $48,668 (97% of the $50,000 goal for 2024). Remember, you can still donate directly by check to the museum, use a credit card to donate through the gift shop, PayPal, or you can go to:
www.build11.org