D261/334 z16

 
  MRHD66 Station Staff

Location: Wingham, New South Wales, Australia
hi there where all D261/334 rebuilt ito z16 ? and whats the main difference between this and the D255 (Z15)

Sponsored advertisement

  Spinner5711 Train Controller

All (D)261 and (D)334 class locomotives became the Z-16 Class from August 1924.

The biggest difference between the (D)255 Class and teh other two D Class 4-4-0s is the builder.  The (D)255 class had smaller cylinders.  The (D)334 Class used Joy's valve year while the other two D Class used Stephenson's valve gear.  The (D)224 Class also had a different front bogie to the other two.  The (D)255 and (D)261 used a Bissell Truck (looks just like that under the Z-12 and Z-13 Class locos) while the (D)334 used an Adams Bogie (looks like that under the Z-17 Class locos.
  MRHD66 Station Staff

Location: Wingham, New South Wales, Australia
All (D)261 and (D)334 class locomotives became the Z-16 Class from August 1924.

The biggest difference between the (D)255 Class and teh other two D Class 4-4-0s is the builder.  The (D)255 class had smaller cylinders.  The (D)334 Class used Joy's valve year while the other two D Class used Stephenson's valve gear.  The (D)224 Class also had a different front bogie to the other two.  The (D)255 and (D)261 used a Bissell Truck (looks just like that under the Z-12 and Z-13 Class locos) while the (D)334 used an Adams Bogie (looks like that under the Z-17 Class locos.
Spinner5711
so all up there was 65 z16 locos  and thak you ill go and look now cheers
  M636C Minister for Railways

hi there where all D261/334 rebuilt ito z16 ? and whats the main difference between this and the D255 (Z15)
MRHD66
The D261 and D334 classes were reclassified as Z16. The rebuilding occurred under the original classification.

The Z16 class had cylinders one inch larger in diameter than the Z15 class and were allowed greater loads.
That is why there were two classes in the 1924 system.

The D334 had a conventional leading bogie rather than a two axle bissel pivoted near the leading axle.

There were variations in the shape of the smokeboxes within the D261 and D334 classes.

But the reason for splitting into two classes was the cylinder diameter.

M636C

Sponsored advertisement

Display from:   

Quick Reply

We've disabled Quick Reply for this thread as it was last updated more than six months ago.