Things you always wanted to know the answer to [Vol. 3]
Discussion
In many programmes/films depicting a train that needs to stop suddenly (ala the damsel in distress tied to tracks) the driver simply pulls the brake lever hard and leaves the wheels locked until the train stops (just in time)
Would such a procedure flat spot the wheels of a train and did drivers ever act with such little mechanical sympathy? would there be other problems such as the fusing of the red hot wheels to the rails?
Would such a procedure flat spot the wheels of a train and did drivers ever act with such little mechanical sympathy? would there be other problems such as the fusing of the red hot wheels to the rails?
MissChief said:
g7jtk said:
When am I going to win the lottery?
Do you enter the Lottery? And if so how many lines? Wednesday and Friday? Euromillions too? Actually none of that matters because it's random chance.
I remember hearing back in the late nineties that a Mercedes S class had something like 114 motors including the main one under the bonnet.
It got me thinking earlier when I turned on the lights. How many bulbs are there in modern cars? Every button has one and even the fuel gauge in our car is made up of bulbs.
So, anyone know or care to take a guess? 100+? 200+?
It got me thinking earlier when I turned on the lights. How many bulbs are there in modern cars? Every button has one and even the fuel gauge in our car is made up of bulbs.
So, anyone know or care to take a guess? 100+? 200+?
Slashmb said:
I remember hearing back in the late nineties that a Mercedes S class had something like 114 motors including the main one under the bonnet.
It got me thinking earlier when I turned on the lights. How many bulbs are there in modern cars? Every button has one and even the fuel gauge in our car is made up of bulbs.
So, anyone know or care to take a guess? 100+? 200+?
Most cars now use LED's instead of bulbs. Less prone to blowing/breaking and far more efficient.It got me thinking earlier when I turned on the lights. How many bulbs are there in modern cars? Every button has one and even the fuel gauge in our car is made up of bulbs.
So, anyone know or care to take a guess? 100+? 200+?
If you're waiting by the curb to cross the road.. you cross it then some children follow you and get hit because they saw you crossing.. would you be in anyway liable?
Thought about this earlier today as near my workplace I know the traffic lights at a particular junciton very very well. Most of the time I will cross when there is still a green man. But that's because I know where to look for cars that might turn into the road I'm crossing. If I can see there's a gap or there's a bus passing by (the buses never turn) then I cross. I Noticed as I crossed afew kids who weren't paying much attention followed me afew seconds after.
Thought about this earlier today as near my workplace I know the traffic lights at a particular junciton very very well. Most of the time I will cross when there is still a green man. But that's because I know where to look for cars that might turn into the road I'm crossing. If I can see there's a gap or there's a bus passing by (the buses never turn) then I cross. I Noticed as I crossed afew kids who weren't paying much attention followed me afew seconds after.
paolow said:
In many programmes/films depicting a train that needs to stop suddenly (ala the damsel in distress tied to tracks) the driver simply pulls the brake lever hard and leaves the wheels locked until the train stops (just in time)
Would such a procedure flat spot the wheels of a train and did drivers ever act with such little mechanical sympathy? would there be other problems such as the fusing of the red hot wheels to the rails?
Yes they get flat spots, but fusion would be difficult - you have a very long, very good heat sink. Friction (inertia) welding requires both parts/areas to be in constant contact with one another to generate the heat, not just a one-time passing 'rub' of one surface over another - and a decent amount of pressure (which I guess a train might have)... Would such a procedure flat spot the wheels of a train and did drivers ever act with such little mechanical sympathy? would there be other problems such as the fusing of the red hot wheels to the rails?
https://www.youtube.com/watch?v=-aEuAK8bsQg
Funkycoldribena said:
McAndy said:
Do mobile speed cameras work during the hours between dusk and sunrise? I don't think I've ever seen one in this time period.
(And no, I haven't been caught by one, either.)
(That I know of.)
Yes.Seen them.(And no, I haven't been caught by one, either.)
(That I know of.)
SPECS don't work in the dark, they need floodlights to read the plate.
ShiningWit said:
How do they (the user) read the numberplate in the dark?
SPECS don't work in the dark, they need floodlights to read the plate.
Really? I thought they had IR illumination so could be used in almost pitch black conditions:SPECS don't work in the dark, they need floodlights to read the plate.
http://www.vysionics.com/product/specs
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