For imterest's sake, here's a shot showing rail wear in Victoria Square
near the old GPO. This is after 17 years.

Mark Skinner

On Wed, 20 Mar 2024, 4:32 pm Mal Rowe, mal.rowe@...> wrote:

>

> On 20/03/2024 05:30, 'Matthew Geier' via TramsDownUnder wrote:

> > The groove is too wide now, I didn't take a photograph, but on the

> > other rail the back of the groove is ground out to match.

> >

> > The standard European profile used has what looks to be a wider groove

> > than Melbourne uses. Certainly MUCH larger than the 'traditional'

> > Sydney track used in the 'old days'.

>

> Dave Hinman told me that Melbourne's RI57a profile has a narrower groove

> - apparently to be a little more bicycle friendly.

>

> The 'check rail' in tramway rail is mainly to stop asphalt migrtaing

> into the groove, not to serve as a check.

>

> See https://tdu.to/i/63074 for a comparison of old and new profiles

>

> Mal Rowe - amateur (mostly) Civil Engineer

>

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>