Trivia:Major design faults

[QueensCurve]

Where were the doors on APT-E? When you look at a picture you can't see them.

In the connector above the articulated bogie.

 

[najaB]

Who did?

As a hint, I suspect that The Planner's forum username is related to his job title.

 

[yorksrob]

All non-mechanical door locks on train toilets. The public are just too dim-witted to use them.

 

[Bletchleyite]

In the connector above the articulated bogie.

Interesting - windowless, then!


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All non-mechanical door locks on train toilets. The public are just too dim-witted to use them.

Mostly awful counterintuitive design.


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[yorksrob]

Interesting - windowless, then!


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Mostly awful counterintuitive design.


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True. A big metal latch that you can see stopping the door from opening (as most disabled loo's seem to have in the outside world) would be better for everyone.

 

[The Growl]

All non-mechanical door locks on train toilets. The public are just too dim-witted to use them.

The first time I went on a Javelin I certainly was. Also being used to the underground and buses, when I was a bit younger I was wondering why the train door wouldn't open when it atopped at the station.

 

[Bletchleyite]

True. A big metal latch that you can see stopping the door from opening (as most disabled loo's seem to have in the outside world) would be better for everyone.

Will be interesting to see what the UK FLIRTs get. The Swiss ones have manual doors with a chunky, clearly mechanical lock that do the job well.


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[yorksrob]

Will be interesting to see what the UK FLIRTs get. The Swiss ones have manual doors with a chunky, clearly mechanical lock that do the job well.


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Those will do nicely by the sounds of it !

 

[dviner]

Will be interesting to see what the UK FLIRTs get. The Swiss ones have manual doors with a chunky, clearly mechanical lock that do the job well.

Can you get your finger (or any other part of your anatomy) stuck in it?

 

[randyrippley]

Interesting - windowless, then!

Which if you think about it is a good idea - it reduces the tendancy of people to stand in front of the doors
But it didn't matter anyway - the APT-E was never designed to carry passengers. It was simply an experimental prototype

 

[43096]

Will be interesting to see what the UK FLIRTs get. The Swiss ones have manual doors with a chunky, clearly mechanical lock that do the job well.


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Trust the Swiss to get it right.

I've never understood the need for the power doors on toilets; it's just something else to go wrong/the scrotes to break. Is it a PRM requirement to have them?

 

[takno]

Trust the Swiss to get it right.

I've never understood the need for the power doors on toilets; it's just something else to go wrong/the scrotes to break. Is it a PRM requirement to have them?

What we don't seem to do much of in the UK compared to other places is power-assisted doors. The leverage required to open a sliding door could be quite significant, particularly from a wheelchair, so you really want a push-button opening mode. You don't need a fancy electronic lock though, and if the power function fails it's far better for the door to fall back to manual mode than for the entire toilet to go out of service.

 

[birchesgreen]

I never understand why you need separate controls to close and then lock the door. I'm sure someone can enlighten me

 

[najaB]

I never understand why you need separate controls to close and then lock the door. I'm sure someone can enlighten me

Making the close and lock buttons separate means that failure of one doesn't mean failure of both.

If the Close button fails door can be closed manually and locked using the lock button, and if the lock button fails it can be closed and someone can stand guard outside.

 

[birchesgreen]

How often do these fail? A lot less often than people forgetting to lock the door i am sure.

 

[najaB]

How often do these fail? A lot less often than people forgetting to lock the door i am sure.

Not often, but it is possible. Plus if you combine the the close and lock into a single button press it's possible for the scrote to press the button and run outside leaving the toilet locked out of use.

 

[yorksrob]

I noticed a bit of a design fault on the 156 toilet door yesterday.

If you go in and take too long faffing around, the door closes itself. However, once the door has closed itself, it won't then lock, even if you press the lock button, if you don't press the door close button first.

I should imagine that has caused a few mishaps.

 

[43096]

Not often, but it is possible. Plus if you combine the the close and lock into a single button press it's possible for the scrote to press the button and run outside leaving the toilet locked out of use.

That last is the real reason why the change was made. As said above, better to have manual locks.

 

[Groningen]

On a 125 the second class behind the powerunit has only 1 exit.

 

[najaB]

On a 125 the second class behind the powerunit has only 1 exit.

It's the same with First at the other end.

Don't know if it can be classed as a flaw though as there is emergency access through the guard's office.

 

[marks87]

It's the same with First at the other end.

Are you sure? I can remember using the door next to the power car on East Coast a few years ago.

 

[jthjth]

Not often, but it is possible. Plus if you combine the the close and lock into a single button press it's possible for the scrote to press the button and run outside leaving the toilet locked out of use.

What's wrong with requiring the inside close button to be pressed continuously until the door is shut? When the door reaches full closure it becomes locked. Entirely obvious to the user how it works (you stop pressing, the door stops moving).

 

[Kite159]

On a 125 the second class behind the powerunit has only 1 exit.

Similar to 180s only having 1 passenger door in the end coaches.

The "catering" door on 222s, especially the 4-coach models

 

[43096]

It's the same with First at the other end.

No it isn't.

 

[birchesgreen]

Not often, but it is possible. Plus if you combine the the close and lock into a single button press it's possible for the scrote to press the button and run outside leaving the toilet locked out of use.

Ok small price to pay for the unexpected sight of someone's todger a few months ago lol

 

[najaB]

Are you sure? I can remember using the door next to the power car on East Coast a few years ago.

No it isn't.

I must be misremembering, thanks for the correction.

 

[Whistler40145]

How about when Sprinters on Cardiff/Bristol to Weymouth services stopped being recognised by Track Circuits, requiring services to be loco hauled.

 

[61653 HTAFC]

One that really annoys me is the entrances to Huddersfield station. The doorways into the concourse are artificially narrowed by the glass frames, meaning if you arrive just after a service has pulled into platform 1 you're treated to an impromptu game of British Bulldog. It's a shame this wasn't changed during the last refurbishment but it may well have been prohibited by the grade 1 listing. Though given the many other changes that did take place I'd be surprised if that was the reason.