TLPTPW - 181 Beware the Ides of March


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Profile Chris S
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Message 1347595 - Posted: 17 Mar 2013, 10:01:14 UTC

Night Vic, but I'll let you into a little secret. Last year I was on a local double decker bus, that was being driven exceptionally fast by the driver, and leant over quite alarmingly around corners. Now I knew that the C of G of these things is very low down in the heavy chassis, and that the legal limit is 28 degrees, but they are tested to 38 degrees tilt with various loadings.

But I didn't feel safe and I got off and waited for the next one.

RM bus undergoing the tilt test for stability, Aldenham overhall works, 1978. The top deck is loaded with sandbags to represent the weight of passengers. All of the wheels must stay in contact with the platform as the bus is tilted to an angle of 28 degrees.




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Message 1347685 - Posted: 17 Mar 2013, 13:28:37 UTC - in response to Message 1347595.

This you made the wise choice. I would not have stayed in it either.

Night Vic, but I'll let you into a little secret. Last year I was on a local double decker bus, that was being driven exceptionally fast by the driver, and leant over quite alarmingly around corners. Now I knew that the C of G of these things is very low down in the heavy chassis, and that the legal limit is 28 degrees, but they are tested to 38 degrees tilt with various loadings.

But I didn't feel safe and I got off and waited for the next one.

RM bus undergoing the tilt test for stability, Aldenham overhall works, 1978. The top deck is loaded with sandbags to represent the weight of passengers. All of the wheels must stay in contact with the platform as the bus is tilted to an angle of 28 degrees.




Source, Copyright, and acknowledgement, London Transport Museum LT museum


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Message 1347702 - Posted: 17 Mar 2013, 14:25:17 UTC

Just in case the eagle eyed bus spotter notices that the bus in the photograph is a Routemaster, no longer used on London routes. The test is still carried out on modern busses and the tilt requirement is still 28ยบ


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Message 1347706 - Posted: 17 Mar 2013, 14:31:28 UTC

Train ride win.
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Message 1347710 - Posted: 17 Mar 2013, 14:39:46 UTC

Thanks Bernie, as usual you are quite correct. Dunno about your local trams though ... ;-) But yes, London LT buses are envied throughout the world and for good reason.


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Message 1347712 - Posted: 17 Mar 2013, 14:44:41 UTC

One FORD Escort zx2 Hot Sport Coupe post, only made for 2 years from what I've read...
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Message 1347714 - Posted: 17 Mar 2013, 14:46:13 UTC

Both trains and trams have their own roll-over rules, not quite as aggressive as those for a bus, but still in the "quiet scary" category.
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Message 1347715 - Posted: 17 Mar 2013, 14:51:51 UTC

Whilst I cant win, I think just avoiding electrocution is a win!!

I was having a tidy up and deciding that there were far too many 4 way power strips. I have recently come by three industrial strips that are much better, as luck would have it I unplugged the old ones first, as I went to pick up one of the 4 ways it crumbled to pieces in my hand, to say I was surprised is an understatement. It one of those moments when you freeze in place thinking "I did unplug this, didn't I???!



It didn't appear to be burnt and just old and brittle. The pick shows what was left!! I suspect it was a cheap one. I shall be testing my others.
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Message 1347717 - Posted: 17 Mar 2013, 14:52:42 UTC
Last modified: 17 Mar 2013, 15:22:22 UTC

Even 5-10 degrees in a fully loaded bus round a corner at 30 mph is in the "somewhat scary" category ...

But my really scary one was coming back from Aalborg in Denmark in 1979, on a ferry across the North sea. We hit a force 8-9 gale, and the whole night through the ferry was tilted at about 15 degrees to Starboard, on the inclination gauges, against the force of the wind coming from the South. Everything was sliding off tables, and all passengers were banned from going on deck until we docked in the UK.

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Message 1347719 - Posted: 17 Mar 2013, 14:54:44 UTC

That is certainly one of the more extreme failures of those things. Glad to hear you found it before it started to emit its remaining smoke...
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Message 1347724 - Posted: 17 Mar 2013, 15:05:29 UTC

Yeah really Bernie, glad you got that one before that strip got You, over here I only buy ones with the UL marking, UL is Underwriters Laboratory...
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Message 1347727 - Posted: 17 Mar 2013, 15:08:09 UTC

Winning after watching formula one.

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Message 1347732 - Posted: 17 Mar 2013, 15:14:50 UTC

UL is a good indication that a power strip is a "good one", however over here we see any number of power strips that carry the "CE" mark (the Europan equivalent of UL), that fall a long way below what you or I would expect of a "good quality" strip.

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Message 1347738 - Posted: 17 Mar 2013, 15:26:38 UTC

Never ever use 4 or 6 way extension strips for 13A appliances, they are simply just not safe. I use one for my computer, monitor, printer, router setup, because I physically have to, but that is not very much loading. They are probably electrically safe, but you get age embrittlement with cheap grades of plastic.

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Message 1347747 - Posted: 17 Mar 2013, 15:37:26 UTC - in response to Message 1347727.

Winning after watching formula one.



Who won?
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Message 1347748 - Posted: 17 Mar 2013, 15:37:34 UTC - in response to Message 1347727.

Winning after watching formula one.

What! the season started?

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Message 1347750 - Posted: 17 Mar 2013, 15:39:44 UTC - in response to Message 1347748.

Winning after watching formula one.

What! the season started?

You snooze, You loose...
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Message 1347755 - Posted: 17 Mar 2013, 15:47:39 UTC
Last modified: 17 Mar 2013, 15:48:00 UTC

John Clark, you have some explaining to do! Why does everyone around here say loose instead of lose??

Aaarrggh!

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Message 1347758 - Posted: 17 Mar 2013, 15:51:51 UTC - in response to Message 1347706.

Train ride win.

That's always a win.

There's more to going around corners and curves too fast than just tipping. I read once of a passenger on an Amtrak train with bi-level cars who complained to the conductor that it was going too fast. The conductor was sitting downstairs and didn't notice any problem... until he went upstairs. Everyone and everything was getting thrown back and forth across the car. He immediately got on the radio and told the engineer to slow down.

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Message 1347760 - Posted: 17 Mar 2013, 15:53:14 UTC - in response to Message 1347758.

Train ride win.

That's always a win.

There's more to going around corners and curves too fast than just tipping. I read once of a passenger on an Amtrak train with bi-level cars who complained to the conductor that it was going too fast. The conductor was sitting downstairs and didn't notice any problem... until he went upstairs. Everyone and everything was getting thrown back and forth across the car. He immediately got on the radio and told the engineer to slow down.



I also love train rides. The only disadvantage is the poor internet connection...
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