This is actually just what I need to figure out how to build my locomotive with gresley gear

@mechanicsnut I discovered it first because I was interested in the Union Pacific 9000 locomotive which has one.

Teacher: you pay attention because this will be a majority part of the test!

Well done and very entertaining to look at.

thank you for uploading this to YouTube. been wanting to know how this works. now if only the Hornby model train company could make an A4 class steam locomotive Mallard model or other A4 class steam locomotive models that actually has this in it and it works when you run the model. I know you wouldn't see it but it would still be nice to know it's there in the model working like the real thing to a certain extent.

It’s really clear for people to know how does Gresley valve gear work

Yes this could be the basis of an a3 class or up 9000

Wait it has 3 pistons?

I don't think it is Gresley valve gear, it's Walschearts with a rocker shaft to the inside cylinder.

Flying Scotsman is also a 3 Cylinder locomotive, right?

You make this in Solidworks?

but what if you added another cylinder?

That is not true trained like big trees have only 105 Rods

の

乛乛

This is so obnoxious a train doesn't need that much stuff