Words of Advice:

"Never Feel Sorry For Anyone Who Owns an Airplane."-- Tina Marie

If Something Seems To Be Too Good To Be True, It's Best To Shoot It, Just In Case." -- Fiona Glenanne

Flying the Airplane is More Important than Radioing Your Plight to a Person on the Ground
Who is Incapable of Understanding or Doing Anything About It.
" -- Unknown

"There seems to be almost no problem that Congress cannot, by diligent efforts and careful legislative drafting, make ten times worse." -- Me

"What the hell is an `Aluminum Falcon'?" -- Emperor Palpatine

"Eck!" -- George the Cat

Friday, January 1, 2016

Because It's Friday

Ozzie steam:

Garratts look weird to my eye.


CenterPuke88 said...

Never even heard of this style before. Seems an unnecessary complication to have to provide steam to two motive sections from a central boiler, but...

And,,yes, it don't look "right".

Comrade Misfit said...

I would have thought it simpler, on at least the Aussie one, to have the cylinders closer to the boiler. Less piping and it might have made the blastpipe more efficient.

Eck! said...

heh! The cylinders closer to the boiler were tried. The crew were
not happy about the heat.

Yes they do look misshapen.

Turns out that Garretts were still in the optimization stage even
late in the game. For all the other styles there were critical
dimensions (height, width, length, and weight) that were maximum
performance limiting. Garratts has a little room for expansion.
Example despite the size of the firebox at one end if the boiler
is long because it can't be made a greater diameter the amount
of heat extracted at the stack end is low. Its an efficiency

Unlike the Mallet which swing out and makes for balance issues at
speed in a curve the Garratts straddle in, a better direction for
balance. Both cases have issues with tight turns and clearances.

Look at all the large engines be they Decapods, Triplex, Shay,
Mallets, or Garratts complexity is a standing matter of fact.
Even the modern oil burners still have the same challenge of
greatest possible tractive effort for the gallon of fuel or
lump of coal.