Why does 765 need a new Smoke Stack?

My question too. I would guess cinder damage causes the stack to get too thin.

The stack was the original out of the factory in 1944. Over years there have been repairs made to the stack but the metal has become worn out so it was time to fabricate a new one. I guess getting 68 years out of the original was pretty good.....

Don't worry, 765's famous "shotgun" exhaust will stay the same!!

Obviously an indication of poor quality control at Lima.

Rusty

Does the stack change include the petty coat pipe?

I hope they get the new setup aligned like the present setup. That’ s the only steam engine I have ever seen blow smoke rings. Seeing the quality of the work done on her in the rebuild I’m sure it will be aligned down to the thousandth of an inch.

You obviously have not seen SP 4449 in action then, have you?

Not on the east coast...

You don't consider Washington DC on the "east coast"?

Plus, we had her in Michigan at Train Festival, back in 2009!

Nothing was done to the stack during the overhaul. At that time it didn't need any work and it appeared to be in good shape. However, when the smokebox was opened for the annual inspection this year, we found places where the metal was abraded and cinder cut to the point where in some places the metal was gone and there were holes in the stack. In other places it was far to thin to weld to, plus there were other, old repairs to the stack in the same high-wear areas that were done long ago. Our CMO (Chief Mechanical Officer) made the decision that we had made enough patch repairs over the years and a new stack was needed.

The stack that you see when you look at the engine is NOT what is being replaced. It is the internal parts of the stack inside the smokebox that are being replaced. I'm not sure about the petticoat pipe...I don't know whether it is involved in the repair.

No Hot Water I have never had the pleasure of seeing the 4449 under steam. I think I have seen her years ago in Portland down by the port sitting cold but I could be mistaken.

Can you direct me to any videos of her blowing rings?

Look for the Goodhart Productions video about the Shasta Daylight.

Thanks I will see if I can find it.

Thanks for input Rich.

When Steve says replace the stack, you say YES SIR and grab the back ache meds...I mean the tools and get to work!  
HAHAHAHA

This video shows quite a few smoke rings from the 765...