"Call to tackle pollution 'role in 50,000 early deaths' "
in [UK Drivers]
|
Prev: Record number of motorists prosecuted for driving while using mobile phones
Next: Classic car for sale on eBay
From: Adrian on 25 Mar 2010 04:54 Tony Dragon <tony.dragon(a)btinternet.com> gurgled happily, sounding much like they were saying: >>> It isn't the brakes which are the limiting factor in >>> stopping, it is the mass. Larger vehicles take more to stop because >>> the mass takes more energy to bring to a halt. How many different ways >>> can this be explained to you as you seem to struggle with the concept >>> of something which is covered in GCSE physics. >> You obviously failed then. >> The limitation on stopping is the coefficient of friction between the >> tyres and the road, except in the few cases where the position of the >> centre of gravity is such that the vehicle will pivot around the front >> tyre contact patch before that limit occurs (almost always on 2 >> wheelers). > Yes you read it here folks, mass has nothing to do with bringing a > vehicle to a halt. Actually, there's an element of both. The grip of the tyres on the road is not a static - it varies according to the load on those tyres - too little, and they won't have as much grip so will lock too early; too much, and they'll get overwhelmed by the momentum and lock too early. Assuming, of course, the vehicle brakes are capable of locking the wheels. And - perhaps more importantly - assuming ultimate braking is actually desirable considering the load on board.
From: thomas on 26 Mar 2010 02:34 "Doug" <jagmad(a)riseup.net> wrote in message news:fd3c1789-af12-4926-a5ca-1155b06b1a2e(a)d27g2000yqf.googlegroups.com... > These are the deaths caused by motorised transport we don't often hear > about because they are not recorded as such. Cyclists be proud! > its funny isn't it? Several Japanese car companies I know have for the european market have not introduced the ULTRA clean engines they have for the home markets as we over here think co2 is some poisoning planet destroyer and thats the gas we have to concentrate - not too concerned with all the other particulates/emmissions - completely unconcerned that your lawn clippings over the year can produce more co2 than your car or that petrol lawnmower is several hundred times dirtier than a "4x4" ! so blame the greenies for the deaths
From: boltar2003 on 26 Mar 2010 10:22 On Fri, 26 Mar 2010 06:52:42 -0700 (PDT) ashley filmer <ash.filmer(a)googlemail.com> wrote: >> I've driven a number of transits and while they may be gutless wonders ev= >en >> they could maintain 40 loaded along every road I took them on. >> >Not everyone lives in the fens. There are real hills around here which >all commercial vehicles and a lot of cars struggle up. I think you are Any car that struggles up a 1 in 10 needs a one way trip to the breakers yard. >exagerating the horsebox problem if your roads are flat as you now >claim. I live in north london. There are plenty of steep hills around here particularly mill hill which is where I've seen a couple of these wheezing piles of junk. >> get compressed if the weight doesn't shift because of the initial braking= >.. >> Hello?? But the extra compression will cause a build up of heat because o= >f >> the extra flexing of the tyre walls. >> >Why don't they make brake pads out of rubber if it is a better >friction surface. Which gets hotter then you brake. The disk or the >tyre - I rest my case lol Oh for gods sake. Its not via friction with the road , its via the constant rotational flexing of the part of the tyre wall underneath the wheel hub as the vehicle moves. Why do you think under inflated or overloaded tyres eventually overheat and blow out if you go too fast in them? The more weight you put on a tyre the more it'll flex under the hub , the more internal friction from the flexing and hence more heat. Idiot. >> Do try to keep up. > >So what do you want them to do if there is no layby within the >distance which you deem acceptable for them to get out of your way ? Did I ever say they should pull over immediately? If theres somewhere safe for them to stop and they have a huge queue behind them they should do so however. >> around to hold it up. > >Gyroscopic forces hold it up when moving, one legged chairs don't >spin, Oh hang on I'm talking to fuckwit champ 2010 Actually its more due to the caster effect and minute adjustements of the steering than gyroscopic forces. If it was gyroscopic forces alone it would never stay up if the wheels were going less than a few rotations per second. >The difference is whilst you are sat in a traffic jam, I am moving and >do not hang around long enough to get stupified int eh way you do -so >long sucker lol And while I just wander over to my desk nice and fresh when I get to work you have to go change in the toilets and have a shower so you don't smell like a builders armpit. >Amongst other things, I ski as well but this is are a bit too Been there done that. Though sliding down a slope gets a bit boring for most adults after a few hours. Doesn't surprise me you're into it though since you're idea of a good time seems to be risking your neck going fast , and, err , thats about it. I've read in a number of places that the brains of adrenaline junkies actually are less sensitive to endorphins than normal people so they have to take insane risks to get the same high a normal person would from listening to a nice bit of music. All a bit sad really. >If you are still on the shelf at 35, you must be well desperate by >now. Perhaps you could try a russian bride dating agency. I'm sure you >must have at least one redeeming feature apart from your razor wit and >life experiences. I'll have to being on the shelf to the wife. Perhaps she'll let me have a mistress. B2003
From: Brimstone on 26 Mar 2010 10:55 <boltar2003(a)boltar.world> wrote in message news:hoifv7$ubn$1(a)speranza.aioe.org... > On Fri, 26 Mar 2010 06:52:42 -0700 (PDT) > ashley filmer <ash.filmer(a)googlemail.com> wrote: >>> I've driven a number of transits and while they may be gutless wonders >>> ev= >>en >>> they could maintain 40 loaded along every road I took them on. >>> >>Not everyone lives in the fens. There are real hills around here which >>all commercial vehicles and a lot of cars struggle up. I think you are > > Any car that struggles up a 1 in 10 needs a one way trip to the breakers > yard. > >>exagerating the horsebox problem if your roads are flat as you now >>claim. > > I live in north london. There are plenty of steep hills around here ROFL. Living in north London you've never experienced a steep hill. > particularly mill hill which is where I've seen a couple of these wheezing > piles of junk. Only a couple, and you want to force them all off the road?
From: Adrian on 26 Mar 2010 11:00
"Brimstone" <brimstone(a)hotmail.com> gurgled happily, sounding much like they were saying: >> I live in north london. There are plenty of steep hills around here > ROFL. Living in north London you've never experienced a steep hill. <raises eyebrows> D'you fancy cycling up to the top of Harrow-on-the-Hill, or Muswell Hill, or Primrose Hill, or... Sure, they ain't exactly the Himalayas, but... |