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

>