We’ve got a short update for this week! Most of the work has been centered on drilling the new staybolt holes. As of Tuesday they had drilled well over 1000 holes.
The new piece of the throat sheet was returned with the 8-degree bend needed and the holes for the flexible staybolts have been drilled.
Marshall has been working on readying the section where the new throat sheet piece will be placed.
After several months of deliberation, we are happy to announce that Robert Franzen, owner of Steam Services of America, has been selected as the official contractor for the boiler rebuild of #1702. Franzen is also currently working on a steam engine rebuild, similar to that of #1702, in Alaska. During the boiler rebuild he will be joining the team a few days a week in the shop, as he is going between two projects.
The first order of Franzen’s work began this week as Bob Gold, was brought in to aid the placement of the new stay bolt holes. Original layouts of #1702 are being used as the reference point to which the new holes will be placed. Marshall has been cleaning the dirt and removing the pink die used in the crack tests. He has also spray painted the surface with a temporary gray in order for the fresh marks to be visible when applied. A few reference markings have already determined that on both sides the blowout valve will be moved from its former position to allow the boiler wash to operate more easily than before.
A section of the outer throat sheet that revealed cracks earlier, was removed and a new sheet has been cut (roughly 3 quarters of an inch steel). The piece has now been sent off so that a special 8 degree bend could be formed to allow the fit to be exact. In order for the guys to get a good handle on the section that was cut, they removed the air tank which opened up plenty of room for access. In the air tanks absence the guys constructed a brace to support the boiler so that it wouldn’t sag.
Brian finished up his dirty job of removing the cylinder valve covers and the insulation was cleaned out. The cylinders themselves need more work, but they have been cleaned as much as possible for the time being.
Here is the latest from Project Manager, Tom Falicon, on the turntable project in Bryson City:
A pivotal point was passed in the turntable build this week by completing the building of the forms and re-bar and then successfully pouring 47 cubic yards of concrete for the first quarter of the lower ring wall. The force of 47-yards of concrete pushing against the forms and bulkheads was tremendous, but everything held tight and the pour was a complete success.
In order for the concrete to cure slowly and properly, we must wait five days before the forms can be removed. To aid the concrete in hardening properly, we assembled a watering system using a pump in the nearby creek and a series of garden hoses. Water is continuously flowing over a blanket of burlap keeping the concrete from drying out, overheating and curing too quickly.
We have already begun assembling the re-bar for the second 1/4 of lower ring wall pour and we will also start assembling the forms for the upper ring wall pour on the first 1/4.
Another monumental mark was reached in the past weeks, when the large bearing assembly that the turntable pivots on was set and secured! The installation of this pivot bearing means that the center pivot pedestal build is complete and able to support the entire weight of the turntable and any locomotive placed on it. The bearing assembly install could not have gone any better!