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cplchanb said:
The big question here is how widespread is it

If it's only for a short section then it's not the end of the world but if it's widespread through the entire line where there's grass then it's an absolute disaster. At that stage I don't think any free repairs would fix the harm in time and reputation.
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I'm sure that the grass can be removed somehow to perform maintenance. They are likely in containers or something.
 
cplchanb said:
the iirc the grass is hooked up to an irrigation system... its a big undertaking... itll cost millions to fix over the stretch
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How did they install sleepers, lay track, secure the track, perform Geometry testing without figuring out that the track was out of spec by 3mm. There must have been a reason why they did this. Screwing up this bad is a colossal size.
 
Bordercollie said:
How did they install sleepers, lay track, secure the track, perform Geometry testing without figuring out that the track was out of spec by 3mm. There must have been a reason why they did this. Screwing up this bad is a colossal size.
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Here is some information about the tolerances within the gauge. It says only when it exceeds 100mph does it matter within 3mm. However that's based on the track originally being up to spec. Which in this situation it's not. I wonder if they could change the angle of the rail to bring the heads closer or apart by 3mm to bring it within spec?
 

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Bordercollie said:
Here is some information about the tolerances within the gauge. It says only when it exceeds 100mph does it matter within 3mm. However that's based on the track originally being up to spec. Which in this situation it's not. I wonder if they could change the angle of the rail to bring the heads closer or apart by 3mm to bring it within spec?
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Exactly... at Tram speeds I honestly don't think it would matter. It's only for hsr where it would be very noticeable.

Any subject matter experts here?
 
cplchanb said:
Exactly... at Tram speeds I honestly don't think it would matter. It's only for hsr where it would be very noticeable.

Any subject matter experts here?
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The designed maximum speed of the Flexity Freedom light rail vehicle is 80 km/h. We'll see if they'll follow the posted speed limit or not.
 
cplchanb said:
Exactly... at Tram speeds I honestly don't think it would matter. It's only for hsr where it would be very noticeable.

Any subject matter experts here?
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It will be if the track exceeds that threshold for whatever reason, which could cause a derailment. Would you accept a new car that had miss-algned wheels and the dealer says it's fine dont worry about it?
 
I think whether it will be a problem or not it will depend on the design of the vehicle's wheel treads.

It's not unheard of for track to be laid slightly out of gauge, though I'd assume it's rare in a rapid transit system, since they usually have a more standardized approach to doing things. The example I know of occurred on a narrow gauge railway in Wales in 1951:

Upon arriving Sir Haydn was the engine in better condition but frequently derailed however and could not be used safely. Upon inspection it turned out that the Talyllyn track was laid approximately 0.5 inches (13 mm) wider than the official gauge, a deliberate policy by the old company to accommodate the long wheelbase of Talyllyn. The two original Talyllyn locomotives had unusually wide wheel treads that allowed them to stay on the wide-of-gauge track. This problem was eventually cured by the fitting of wider wheel treads and by a Territorial Army members' exercise in 1953 relaying the railway to its correct gauge making Sir Haydn usable.
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en.wikipedia.org

Sir Haydn (locomotive) - Wikipedia

en.wikipedia.org en.wikipedia.org

However, I am no expert on the wheel design of the Flexity and whether they have sufficiently wide wheel treads for this to not be a concern.

W. K. Lis said:
The designed maximum speed of the Flexity Freedom light rail vehicle is 80 km/h. We'll see if they'll follow the posted speed limit or not.
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That wasn't the question.
 
Steve Munro has a comment on this yesterday, and he notes he's not completely certain, but it was "I believe that the problem has been misrepresented as one of gauge when the real issue is the rail profile which does not match the wheels on the new cars. This is similar to a problem with track in Ottawa, and the fix involves grinding the railhead to change the profile, not relaying all of the track."
 
Jonny5 said:
Steve Munro has a comment on this yesterday, and he notes he's not completely certain, but it was "I believe that the problem has been misrepresented as one of gauge when the real issue is the rail profile which does not match the wheels on the new cars. This is similar to a problem with track in Ottawa, and the fix involves grinding the railhead to change the profile, not relaying all of the track."
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So, square peg, round hole? Honestly, we’ve been running trains in Canada since 1836, and in 2023 our procurement people can’t reliably mate up wheel and rail profiles?
 
We need "Yield to light rail vehicles" signage at the Crosstown LRT intersections. Shouldn't need them, but the lawyers may insist going this way.
road-sign-tram-give-way.png
From link.

Even if the "law" has no power in Toronto using those signs, just putting them up should "wake" the drivers up.
 
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Just like College Station still having the hockey murals despite the Leafs playing at the nearby Maple Leaf Gardens for 15 years between the original installation of the murals in 1984 and the Leafs moving to the Air Canada Centre (later renamed Scotiabank Arena); the Leafs played at the Maple Leaf Gardens from 1931 to 1999.
 
mind_the_gap said:
Regardless of what Science Centre station will be renamed to, ”Total Lunar Eclipse” by Sarah Morris will (thankfully) always reflect its’ original location.

I absolutely love the ”molecular” nature…

1634151945-20211012-eglinton-crosstown-9.jpg


1634151958-20211012-eglinton-crosstown-16.jpg

Source

The Ontario Science Centre will always live on through her pieces.
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I hadn’t seen that. By far my favourite looking station on the entire network now!
 
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