Re: 40 class bogies
David Bromage (dbromage@metz.une.edu.au)
8 Oct 1997 04:08:50 GMT
Allan Brown (ajbrown@ozemail.com.au) wrote:
>It is written that the NSWGR 40 class diesel electrics were a derivative
>of the American RSD4/5 units, but suitably altered for local conditions.
>Considering that the RSD4/5s had asymmetric bogies with all axles
>driving, what prompted the change resulting in the 40 class having
>equdistant A-1-A bogies? Why wasn't a Bo-Bo arrangement used?
The same reason the GM1 was A1A and the original F7 was Bo-Bo, to reduce
the axle load. The class 40 weighs 113t for a maximum axle load of 19t.
On Bo-Bo bogies this would mean an axle load of 28.25t.
Cheers
David