Bob, a modern 30 metre tram should weight about 40 tonnes or so light. Add
200 or so modern, McDonalds-fed passengers to that and you're up somewhere
north of another 15 tonnes. I believe the Melbourne E class is atypically
heavy, so if you saw a figure of 60 tonnes, it could be a laden E class.
As for fixed trucks - they're cheaper. That's your answer.
Tony P
On Wednesday 3 April 2024 at 23:13:45 UTC+11 Bob Pearce wrote:
> Hi all,
>
>
>
> What is on a tram that makes the weight 60 something tonnes?
>
> Is it air con, inverters and other gadgets?
>
>
>
> Have the travelling public gotten so soft that they have to travel with
> the comforts of home for such a short time span?
>
>
>
> Anyhow, getting back to the trams, has any model with a fixed bogie ever
> been a real success, other than for tearing up rails esp. on curves?
>
>
>
> Bob in Perth
>
>
>
> *From:*tramsdo...@... tramsdo...@...> *On
> Behalf Of *TP
> *Sent:* Wednesday, April 3, 2024 7:06 PM
> *To:* TramsDownUnder tramsdo...@...>
> *Subject:* Re: [TramsDownUnder] Re: Gold Coast tram curve wear
>
>
>
> The 15T's unladen axle load is 5.25 tonne.
>
>
>
> Tony P
>
>
>
> On Tuesday 2 April 2024 at 23:49:57 UTC+11transit...@...
> wrote:
>
> Should have GONE FOR THE Skoda 15T From memory they had an axle load
> less than 10 t.
>
>
>
> Regards
>
>
>
> Dudley
>
>
> ----- Original Message -----
>
> *From:*
>
>tramsdo...@...
>
>
>
> *To:*
>
> tramsdo...@...>
>
> *Cc:*
>
>
>
> *Sent:*
>
> Sun, 24 Mar 2024 01:20:42 +1100
>
> *Subject:*
>
> Re: [TramsDownUnder] Re: Gold Coast tram curve wear
>
>
>
>
> Gday Mal,All
>
> Strewth,the W only had 4.5 ton axle load,about 6 ton full load and with
> real swiviling trucks
> No wonder the rails get chewed,esp on curves,esp with the rigid trucks
>
> Cheers, Mick
>
> On 23/03/2024 2:14 pm, Mal Rowe wrote:
> > On 22/03/2024 16:52, TP wrote:
> >> I've no doubt that there are design issues on different models of
> >> trams that have a bearing on the problem.
> >
> >
> > Axle loads are a key issue.
> >
> > In Melbourne, the fixed truck D2s have a maximum axle load of 22.2
> > tonne (for the centre truck - 11.1 tonne per axle)
> >
> > The Es are longer and heavier but have four swivelling trucks with a
> > highest axle load of 17.4 tonne (for an end truck - 8.7 tonne per axle)
> >
> > The Cs have a quite high axle load - around 21 tonne per fixed truck -
> > fairly evenly spread across the trucks.
> >
> > One of the key specs for the E class was for a lower axle load than
> > the C and D classes.
> >
> > Mal Rowe - getting technical
> >
>
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