Trains newswire says compressor work was on the list of adjustments.

It was the governor that was not doing what we wanted. The compressor worked fine. The governor we had on the engine did not have a pressure differential of more than 2 pounds, so, the compressor started even when we did something small like open the firebox door. A different governor will be applied over the next few weeks. One with an adjustable differential setting.

Ok so Coal fired right - I was thrown off a bit by the fuel load wich must have been low in the bunker for this inaurgural run. Couldn't see any in the one Youtube I looked at.

Anyhow great to see and hear.

That has to be the loudest air pump exhaust I've ever heard. It's almost as if it's piped to the blower ring that way it sends the blast up the stack. It is even louder than the Franklin Booster on 1522. It is because it's starting against high res. pressure or???

Agreed. My thoughts exactly when hearing it for the first time.

26's bell does not have a pneumatic ringer. You can clearly see the rope running to the bell in the video.

But that sound is the air compressor. The explanation given by one of the shop guys on Facebook is that the governor on the compressor has a differential of only a couple pounds, so pretty much anything (up to and including opening the firebox door) causes the pressure to drop enough that the compressor comes on. It's not a major problem, but the governor is being swapped out for one with a larger differential.

You can also clearly see the pneumatic operator in the view above of the right side taken from the roundhouse roof.

Some bells have both a rope and a pneumatic ringer. This one isn't mounted on the clapper itself but has a little piston mounted to the yoke.

The engines I work on were built with both, however the railroad did away with the ropes on both of them. On one, they simple pinned the yoke to the cradle through the trunnions, on the other they replaced the cradle entirely with a one-piece cradle, utilizing pneumatic ringers mounted to the clapper.

Something like this:

Greetings:
The differential is supposed to be "slight" according to Westinghouse.
Generally, I have seen/used 2 (two) psi.
At the base of the air end of the governor there is a small (usually tapped) hole.
I generally screw in a little Allen head set screw with a hole drilled through it to the proper size (somewhere between a No.40 and a No.60 depending on the governor).
Were there nothing in hole in the base of the air end of the governor, pressure couldn't build up in the air end and the governor wouldn't shut off.
Good luck!
J.David
P.S. The piston in the steam end of the compressor governor has a hole drilled in it so the pump can never fully shut off for more than, say a minute. This is so the compressor always runs a bit, essential in freezing weather to prevent it from freezing up. JDC

I had to take a second look - the pneumatic air ringer is indeed a new addition - I would have killed to have that back in my days there!

One of several new additions/upgrades I guess. I know the engine now has a mechanical lubrication system vs. the old hydrostatic, a larger air compressor, improved steam heating lines. A bit more of a hot rod than when I worked on her.