According to the Driver's Route Knowledge Diagram
https://railsafe.org.au/diagrams/drivers-route-knowledge-diagrams for that
section
https://railsafe.org.au/trim/contractors-diagrams?RecordNumber=D2015%2F575,
the speedboards show 115 for General and 160 for XPT, with the sharpest
curve on the Up Main between East Maitland and Victoria St (80/85). The
Down Main has more 160 km/h running, but that seems to be solely because
the Up platform faces are curved.

I believe the bogies on the XPT coaches are bolsterless, with the secondary
springing helping to keep them aligned for the straight, but someone else
with more knowledge of this would have to confirm. The Comeng books by John
Dunn go into a lot of detail about the XPT design and development, but I
don't have them on my bookshelf yet.

regards,
Robbie

On 21 Jun 2017 23:26, "'Dudley Horscroft'transitconsult@...
[TramsDownUnder]" TramsDownUnder@...> wrote:

What are allowed speeds on the Broadmeadow Maitland section? The XPTs go
flat out on this stretch, and riding improves wonderfully.
Between Casino and Grafton (and much of the rest of the route), they dawdle
and the bogies grunt and groan - presumably something is
rubbing and often the springs hit the stops. But not so on the four track
race course!

Regards

Dudley Horscroft

----- Original Message -----
From: "prescottt@ymail.com [TramsDownUnder]" TramsDownUnder@...
>

To: TramsDownUnder@...>
Sent: Wednesday, June 21, 2017 6:29 PM
Subject: Re: [TramsDownUnder] Stubborn motorists! - was:Re: FW: snippets,
Wed.14.6.17

> Thank you so much David. It looks like, apart from the reality of speed

limits on individual sections, there are no general
> restrictions on interurbans running at up to 130 km/h (electric) to 140

(Endeavour) outside the metropolitan area. Suburban is
> limited to 115 but there is exception for long distance trains on the

Parramatta-Penrith section (up to 160 for XPTs but
> interurbans are stuck at 115). The East Hills line on the other hand is

more restricted than I thought it might be considering the
> quadding.

>

> So there is no general resistance to theoretical maximum speeds

stretching up to 160 in parts. The slowness is presumably down to
> infrastructure issues, signalling, line capacity (other trains getting in

the way) and the political slowdown for "ontime"
> running. There are some good theoretical maximum speeds on the south

coast but the reality is far different.
>

>

> Tony P

> ---InTramsDownUnder@..., <davibenne@...> wrote :

>

> Tony

> Speed limits are set out in the Train Operating Conditions (TOC) manual.

You can find them here:
> http://www.asa.transport.nsw.gov.au/sites/default/files/asa/

asa-standards/ts-toc-2.pdf
> http://www.asa.transport.nsw.gov.au/sites/default/files/asa/

asa-standards/ts-toc-2.pdf
> XPT and Xplorer trains are allowed higher limits up to 160 km/h in the

case of XPT and 145 km/h for Xplorers in certain areas -
> see part 16 for the Sydney Metro area.

>

> David B

>

>

>