Friends COS calendar

A subset of the Friends of the Cumbres and Toltec Scenic Railroad located in Colorado Springs, Colorado, with the mission of preservation, restoration, and interpretation of CTSRR historic assets. The Springs group is primarily involved in restoration. See below for blog archive of older postings. For a brief history of 470 please click the link below to the Friends website.

Friday, October 12, 2012

Bridging the gap 9-15-12

A piece of angle steel as shown above will be used to fasten the two longer pieces in the center of the car.  It was modified slightly to fit snugly against the larger pieces by grinding the inside angle to a sharp angle rather than rounded as most are when they are manufactured.  It was initially planned to weld the pieces together, although subsequent information obtained suggested that bolting would be better considering the repeated stresses that would occur as part of a train.  It was felt that welds would be vulnerable to breaking more easily.
So, back to our friend the mag drill.  Drilling was a little tricky because the width of the steel was such that the magnet couldn't hold optimally, but it worked.
Like so.
Meanwhile, Tom was making a prototype bracket to refasten the cross-pieces between the inner and intermediate sills that had been removed, cutting the mortises.  These should be quite stable after tensioning the tie rods across the car.

Steel bracing

We have received a request to show some of the steel bracing in 470, and this posting will attempt to do that.  There is a steel piece that runs the length of the car as shown above.  Vertical posts are present at the bends of the long piece.  Each end is anchored through the sill  at the end of the car as shown below.

Each end of the brace is rounded and threaded, and passes through the sill, and is fastened with a nut.  The sill on the left end as we face this side of the car has been exposed to water from the icebox which was just above, and a portion is to be replaced.  this nut was also rusted on. 

Steel IV 9-1-12

After spending many hours and bruised knuckles moving tie rods back and forth, it was determined that they moved easier when the holes in the sills were enlarged slightly.  This was done to the inner and intermediate sills only, leaving the outer sills intact.  Craig is working on one of the intermediate sills in the photo above.
Meanwhile, John is fabricating more clamps to hold the steel tightly to the inner sills.
Thusly.  Looks like they will fit.  Now, how do we fasten the two long pieces on each inner sill together in the middle?  More to come.

Levitating steel - 8-18-12

Holes have been drilled in the steel, and it is time for a trial run to fit them together.
The beams could be lifted by 3 or 4 people, but hydraulic jacks were used to press them into place,  We also had rachet straps in place to not only help in raising, but also for safety to prevent an "unforseen" descent.  Lenny is minding the jack in this photo.
One side is close.
But  there is a speed bump.  Most of the holes were aligned well, but a few had to be enlarged slightly.
Tom made clamps out of angle iron and thread stock to tighten up and hold the steel in place.  (I didn't know he was left handed!)  The tie rods have been threaded through the beam on the right and are being worked through the holes in the beam on the left.
It's looking good.  It just needs a little adjusting here and there.
Here is a closer look.  Don't forget you can enlarge photos by clicking on them.

Thursday, October 11, 2012

More steel - 8-4-12

Work continues fitting and drilling the steel.  The holes for the tie rods fit fairly well with minimal redoing.
Rich and Tom are working on the splice in the sill that had been done prior to our acquiring 470.  We replaced the bolts above Tom's toes recently, and there will have to be accommodation made for them in the steel on this side.
The bolts were removed and the steel put in position so that the drill sites could be marked through the sill.
Tie rod holes have been drilled in the piece on the left.  Note the flex in the sill on the left that has been blocked up.  The steel should correct the misalignments.

Steel 7-21-12

There was a rather long break this spring/summer because of vacations and work sessions down south.  We got back at it in July continuing with prepping and installing steel reinforcing.
The photo above shows the west end of the car with the steel in place.  The pieces for the inner sills can be seen resting on the cross ties below.
The ends of the steel were cut to conform with the moulding of the corner as shown above.  Holes were drilled for bolts to secure in place.
Holes needed to be drilled in the longitudinal pieces of steel to accommodate the tie rods that pass through the width of the car, as well as for bolts to secure it in place.  They were placed on blocks in position as above, and the locations for drilling were marked.
Thanks be to whoever invented the mag drill!  I had never used one before, but it made drilling heavy steel relatively easy, as opposed to using a hand drill.
We used a "special sauce" for a drill lubricant that worked better than oil alone.  Contact me if you would like the formula.  It came from Greg Roberts at the Trolley museum.
Meanwhile, Tom is treating spacers that will be placed under the sills since the vertical dimension of the steel is greater than that of the sill.
The trim pieces over the ends of the doors will need replacing, and the roof curve is not a simple arc of a circle.  A protractor was fashioned and measurements made to help determine the shape of the curve.

More very soon.