Kudos to the museum staff and Dan for producing this highly educational video. I learned an enormous amount of knowledge about how a late steam era locomotive operates. The design ingenuity represented by the creation of these machines is truly awe inspiring. When one considers how profoundly steam locomotion changed man's existence on the planet in such a short period of time, it is no wonder that the engineering geniuses who invented and continuously improved these incredible machines were held in the highest regard. They literally changed the world for the better.

The graphics of this presentation are of superlative quality....so is the narrative, giving this tutorial the quality of a professional training video...

Never too old to learn something new!!

That rendering is incredible.

This is the most detailed and kindest video explaining the principle of a steam engine.

In the late 18 and early 1900's the C&O went through my grandfather's property to service local towns hauling coal, timber, freight and passengers. I am a helpless railfan and am just mesmerized by how this mechanism operates and developed to such a fine degree. Now aided by your amazing graphic presentation and narrative, I now understand it. Very, very, very well done! Thank you so much. I hope to one day ride the "Gap Trail". Dave

this explanation is very clear many thanks

Excellent presentation. Thanks again.

Really clear description thanks for sharing 😀

On behalf of visual learners everywhere - thank you!

Probably the best video about steam locomotive working parts I have seen. Thanks!

Incredible CG animation! It's obvious a lot of effort went into this video. Thanks for creating this!

Hello from England

Perfect explanation. Been looking for something this detailed for a while. Spot on.

Thanks for providing a very completely informative video! Cheers!

This is the best explanation I’ve seen about steam engine valves and their operation. Thanks!

Well done! Excellent simulation graphics. Looking forward to parts 2 and 3!

Thanks for a very informative presentation! I'm looking forward to the the next part of valve gear types.

Fascinating. Being a machinist myself, I can see piston valves would be easier to manufacture than slide valves. Especially back then.

Good afternoon from SE Louisiana 17 Oct 21.