Re: Sydenham to Bankstown redevelopment study: developers could add 25,000 more homes
  Tony Galloway

The Lindenwold line cars have all axles powered and are relatively lightweight. And no trailers.

An interesting thing about the Lindenwold line is it is classed under New Jersey law as an “interurban electric railway”.

Tony G

> On 10 Oct 2017, at 11:15 pm, 'Dudley'transitconsult@... [TramsDownUnder] TramsDownUnder@...> wrote:


> According to Wikipaedia, the Millennial or A class trains can accelerate at 1.0 metre per

> sec squared. Given that most modern trams have a top acceleration of 1.3 m/s2, this is

> not far off tramway practice. I think there are few trains that can accelerate as well as

> this.


> The unlamented Hitachi trains in Melbourne looked good when I looked over them being

> built. The bloke showing us around thought he was doing well when he said they can

> accelerate at 1.2. I said "Metres per second squared?" He looked at me as if I were daft

> and said, "No, feet per sec squared". Sluggish by my estimates compared to the Lindenwold

> Line trains I had ridden on, which were probably up to 1.3 m/s2. Wikipaedia states for

> the Lindenwold Line trains: "The frequent use of such high acceleration and deceleration

> rates makes for a quick ride, yet one that can occasionally be perilous for non-seated

> passengers." but does not unfortunately state what the high accelerations and deceleration

> rates are! The bloke showing us around these trains said that when they came into service

> originally, passengers tended to end up in the other end of the car if they were not

> hanging on - they had never met a train that could accelerate like a car. They soon

> learnt!


> Regards


> Dudley


> -----Original Message-----

> From:TramsDownUnder@... []

> Sent: Tuesday, 10 October 2017 10:21 PM

> To:TramsDownUnder@...

> Subject: Re: [TramsDownUnder] Sydenham to Bankstown redevelopment study: developers could

> add 25,000 more homes


> Following earlier discussion here, I got all those national comparative suburban and

> interurban journey times (the ones that showed NSW trains to be the slowest in Australia)

> together and sent them off in a letter to the Minister. Unlike previous attempts where I

> got the usual platitudinous response from a PR type, this one must have had enough meat in

> it to get an input from engineering people and signed off by the Parliamentary Secretary.

> Possibly they were stung by the extreme comparison with Perth. If so, it's a good thing

> they're aware of it if they weren't before.


> To cut a long story short, we're not going to get faster double deck operations any time

> soon because there are far too many infrastructure issues to resolve quickly. The

> interesting one for the interurban services is the large number of unprotected rural level

> crossings which apparently "heavily determine" line speeds in order to maintain good sight

> lines. There were other issues mentioned but this one seems to have the strongest bearing

> on operating speeds. I know some of these level crossings. They're scary to drive across.


> The other very pertinent point (in view of the performance claims made by double deck

> advocates) is that they said that it was impossible to match the performance of those

> single deck trains in other states because double deckers are disadvantaged on

> acceleration, deceleration, braking and dwell times. I'm normally sceptical of anything

> I'm told, but this aligns with my own previous conclusions. Double deckers are not cut out

> for urban commuter work but are an unavoidable necessity for longer distance, high-volume

> work where higher seating capacity is needed.


> It will be interesting to see if anything comes out of Turnbull's offer of funding for

> interurban rail infrastructure to improve journey times. What concerns me, as one example,

> is that within five years there will likely be motorway all the way between Bomaderry and

> St Peters. It will take about 1 hr 30 mins to 1 hr 45 to drive that compared to 2 hours 45

> on the train.


> Tony P


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