Re: 150 years of rail in Aust. - Flying Scotsman

[Aldert Tjoelker <tjoelker@cybercomm.nl>]

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http://www.cybercomm.nl/~tjoelker

Derick Wuen schreef:
> 
> Rob McKiernan wrote in message ...
> >Guys,
> >I visited the York NRM last November and on display were the Rocket replica
> >and the original rocket. It is somewhat modified in that the cylinders are
> >no longer angled in their stroke but much more horizontal in attitude.
> IIRC,
> >it was modified late in its life by a colliery who were using it.
> >Cheers Rob
> 
> Thanks for that.
> 
> The L&M had 4 "phases" of 0-2-2 Rocket types.
> 
> Phase 1 , Rocket at Rainhill trials 1829
> 
> Phase 2 production, Meteor, Dart, Comet  1830 (lower cylinders, better
> tenders)
> 
> Phase 3 Phoenix, North Star. 1830 smokeboxes
> 
> Phase 4 Northumbrian, Majestic 1830 much heavier
> 
> I think the "Rocket remains" was an upgrade from phase 1 to phase 3
> standards by L&M, not subsequent owners. Smokebox had obvious maintenance
> advantages; horizontal cylinders improved ride.
> 
> Someone said somewhere that Rocket in original form "rode like a hunter" (by
> which they meant jumping horse). Horizontal cylinders decreased unsprung
> weight, but "boxer" action of outside cylinder 0-2-2 layout could not be
> solved within design envelope. Hence 2-2-0 inside cylinder Planet, which
> followed Northumbrian on L&M in 1830.... a very different set of trade-offs.