I think this empty comment field _demands_ an appreciative comment. Most impressive stuff, thank you for making and sharing!

Hi Anthony, I really appreciated your interesting response. Oak was bad, because it corroded the through-bolts. (Ahrons). Honestly, I have no idea what the axles were made of, but what is crucial, is radiusing corners. E.G., where the axle was thinner, it’s important that where the thin bit meets the fat bit, there should be a concave corner. We know about this, these days, but in her time, it may mot have been understood. Versailles train wreck and fire. 4-wheeled loco broke its crank axle, derailed... and all the other stuff.

Your channel is amazing ! When most of the people in Europe think about steam locomotives, they think about those big black classic locomotives we can see in movies about WWII or movies that happen in 1930's. A lot of people do not know the XIXth century locomotives where very different from those of the time of our grand parents and grand grand parents.

This video seems like an important introduction to an idea that I didn't realize I wanted to explore: the question of how small locomotives and small railways were conducted before they became giant semi-national behemoths.

I was so surprised to see Planet appear in the BBC Victoria series a couple years ago.

this locomotive was great and having no patten is why this tech advanced so quickly.

There was a Planet engine put to work by the Tuscumbia, Courtland and Decatur Railroad in Alabama in 1833. I don't know if it was a real Planet or a copy maee in the United States; but it was and is acknowledged as a Planet. The engine ran on pig iron rails that were too thin and pliable, so that they warped under the weight of the engine, requiring frequent stops for the screw repair and align the rails. In 1838, this Planet and its train carried a detachment of the Cherokee "Trail of Tears" between Decatur and Tuscumbia. The transfer took twelves hours.

Would be good if you do a video about Leicester and swanington original locos Or the ones on midland counties railway

excellent

Thank you for the information of the Prins Agust

Fascinating. Unitarians and Quakers seem to figure very frequently in the early days of steam locomotives. Whatever happened to them?

very interesting................ thak you

I read in EL Ahrons that the practice of multiple frames, to strengthen -or better support- crank axles, was, in actual fact, to weaken them or case them to break. This is counter intuitive. But once crank axles ran in only two bearings, they stopped breaking. Not, perhaps relevant to planet, but when straight 6 and particularly EIGHT cylinder internal combustion engines were ‘invented’, crank-shafts broke frequently. The failed R101 airship had straight-eight cylinder Beardmore Diesel engines, which had to restrict their maximum RPM, thus not realise their intended power output, because their crankshafts invariably broke. I also read that a Crompton (class 33) 8-cylinder Sulzer engine broke its crankshaft, owing to the crankshaft-damper, overheating and seizing up -and failing to suppress the torsional oscillations. I expect everyone knows all about this, and so I hope it wasn’t boring.

Such a disappointment when I hears she was scraped, but at least the replica is as close to the real thing as we could dream of

We really should have a good OO or HO scale model of this locomotive

Piracy in the 1830s: you wouldn’t download a train