Re: [z_scale] Re: Mallets - one more time again
- Dieter_Mac_Nolte@... schrieb:
> Dear list,Dieter,
> has somebody ever tried to find out what 'Mallets' really means? I think,
> there are different oppinions on the meaning of 'Mallet' at both sides of the
> pond, are they?
> I looked up in the 'Lexikon der Modelleisenbahn' (Encyclopedia of model
> railroading) of the 'transpress-publishing house' and found the following
> description: Mallet-locos are belonging to the group of locos with split
> mechanism. At the 'Mallet-drive, one driving mechanism is mounted at the main
> fraim and the other driving mechanism is mounted on a separate truck.
> Does this clearifies the problem?
> In this group are falling also the following drives: Meyer and Garrat.
With a small but important point to add: A Mallet locomotive is a compound
articulated locomotive with the low-pressure cylinders on the front swiveling
frame,whereas the rear frame is fixed to the boiler.
E.g.,the Big Boy is only an "articulated" locomotive;if Chapelon would have got
the chance to rebuild it to compounding,it would have become a "Mallet".
The Meyers and Garratts you refer to both have two swiveling frames,whereas the
boiler is mounted on a main frame.On the Garratt, the containments for water and
coal are mounted on the swiveling frames as well;thus giving more space on the
main frame for a large boiler.
So if someone would do great improvements on any 2-truck diesel or electric
vehicle by converting it to STEAM,but keeping the frame configuration,you would
get a Meyer.
- Dieter_Mac_Nolte@... wrote:
>Yes this is an actual loco. Can be seen at
> 'Amtrak Acela', is this a real new development? My information on Amerikan locos
> ends with 1998, sorry. So, any info?