Donate Bitcoin

Donate Paypal


PeakOil is You

PeakOil is You

Need for Speed?

What's on your mind?
General interest discussions, not necessarily related to depletion.

Need for Speed?

Unread postby Schweinshaxe » Sat 23 Jul 2005, 20:51:54

Here in Germany there's no speed limit on the highways. You can drive as fast as you like. I think Germany is the only country in the world without speed limits. Am i right or wrong?

It's of course a lot of fun to drive fast. I have an Audi A2 so I don't benefit much from the lack of speed limits. I can only get it up to about 180 km/h. Those babies are built for low fuel consomtion, not for drag racing... I know a guy who had a chipped Audi RS 4. It's basically a Formula 1 car with an Audi body. 400 hp V8 engine if I'm not wrong. He took me for a ride one evening. 300 km/h on a foggy dark road. You really get tunnel vision when you drive that fast! My legs were like spaghetti when he let me off at home.

The free speed has a few side effects though.

1. High fuel consumption. An engine consumes much more gas at those speeds

2. The accidents get really nasty. I have driven through a couple of Autobahn accidents. Sometimes you can't tell how many cars were involved because the cars are torn to pieces.

3. The roads are worn out much faster. The highways are constantly rebuilt with endless ques as a result. The words Stau and Baustelle are probably the most used words in the German language.

4. Much more pollution.

I'm not sure why there are no speed limits on German highways. Does anyone have any background information? I come from Sweden where the highest speed limit is 110 km/h so I don't really know.

Any Germans on board with a bit more knowledge?
Was soll das?
User avatar
Schweinshaxe
Tar Sands
Tar Sands
 
Posts: 700
Joined: Sun 29 May 2005, 03:00:00
Location: Schweinland-Pfalz

Unread postby The_Toecutter » Sat 23 Jul 2005, 21:10:37

Most of the problems you listed could be countered by switching those cars to electric. Make them lighter in weight, you get less road wear. Zero tailpipe emissions keeps the pollution away from population centers(even from coal plants it will be less than gas powered cars, at least in America. Germany will be different story.). No gasoline tank to explode, either, making the cars safer. Lower center of gravity by placing the bulk of the battery pack into the floor of the car makes handling better, helping to avoid accidents. Electric motors are by far more efficient than internal combustion engines, allowing about double the fuel efficiency overall from the point the energy is created to the time it gets to the wheels at normal speeds(60-70 mph), although at higher speeds the disparity shrinks.

Best of all, given the torque characteristics of an electric motor, the cars could be made even faster!
The unnecessary felling of a tree, perhaps the old growth of centuries, seems to me a crime little short of murder. ~Thomas Jefferson
User avatar
The_Toecutter
Intermediate Crude
Intermediate Crude
 
Posts: 2142
Joined: Sat 18 Jun 2005, 03:00:00

Re: Need for Speed?

Unread postby lotrfan55345 » Sat 23 Jul 2005, 22:03:53

$this->bbcode_second_pass_quote('Schweinshaxe', 'H')ere in Germany there's no speed limit on the highways. You can drive as fast as you like. I think Germany is the only country in the world without speed limits. Am i right or wrong?


All roads in the Phillippines have no speed limit, Many highways in China have a speed limit but are not enforced at all. Switzerland, Italy, Austria, Russia, Netherlands, Japan, Australia and perhaps more have stretched of highways with no speed limits/or the speed limits are not enforced.
lotrfan55345
Heavy Crude
Heavy Crude
 
Posts: 1091
Joined: Tue 20 Jul 2004, 03:00:00
Location: Minneapolis / Pittsburgh

Re: Need for Speed?

Unread postby Schweinshaxe » Sat 23 Jul 2005, 22:34:44

$this->bbcode_second_pass_quote('lotrfan55345', '')$this->bbcode_second_pass_quote('Schweinshaxe', 'H')ere in Germany there's no speed limit on the highways. You can drive as fast as you like. I think Germany is the only country in the world without speed limits. Am i right or wrong?


All roads in the Phillippines have no speed limit, Many highways in China have a speed limit but are not enforced at all. Switzerland, Italy, Austria, Russia, Netherlands, Japan, Australia and perhaps more have stretched of highways with no speed limits/or the speed limits are not enforced.


According to Wikipedia, Germany is the only country listed without a speed limit.

http://en.wikipedia.org/wiki/Speed_limit

If the speed limits are enforced or not is another story. It could be wrong though. According to the list, the speed limit for "outside towns/motorroutes" in Sweden is 80 km/h. That speed limit doesn't exist in Sweden. Or have I been an ex-pat too long...
Was soll das?
User avatar
Schweinshaxe
Tar Sands
Tar Sands
 
Posts: 700
Joined: Sun 29 May 2005, 03:00:00
Location: Schweinland-Pfalz

Unread postby Daculling » Sat 23 Jul 2005, 22:42:14

First of all... why would high speed wear a road faster? I can't get my head around that... I can understand heavy vehicles but not faster...

There are parts of the US where there is a speed limit but not really enforced. I remember driving by '73 Riv at 125 mph over most of ID and Ill. Thought I should not have as that was very dangerous... Germans might not think so though, scared the hell out of me but I made great time. Averaged 90 mph from DC to Ames IA. Then I stopped taking drugs 8O
Daculling
Heavy Crude
Heavy Crude
 
Posts: 1228
Joined: Tue 12 Apr 2005, 03:00:00

Unread postby oneoblivion » Sat 23 Jul 2005, 23:58:00

Ah what I would do to be somewhere with no speed limit. Keeping a motorcycle that is capable of 0 to 140 mph in about 10 seconds at the speed limit can be really tough. I do get to save on gas though 47mpg and being faster than almost every car on the road is a nice combination.
User avatar
oneoblivion
Wood
Wood
 
Posts: 9
Joined: Mon 11 Apr 2005, 03:00:00

Unread postby pilferage » Sun 24 Jul 2005, 01:33:56

That's insane. Something only a few hundred pounds getting that mileage... there are vehicles 10 times that weight getting better mileage! Otoh, I wonder what a fully faired diesel powered Honda cruiser would pull? I might find out if I get the time/money.
"Humankind cannot gain anything without first giving something in return. To obtain, something of equal value must be lost. "
User avatar
pilferage
Tar Sands
Tar Sands
 
Posts: 553
Joined: Sun 21 Nov 2004, 04:00:00
Location: ~170ft/lbs@0rpm (on my bike)

Unread postby The_Toecutter » Sun 24 Jul 2005, 01:52:50

$this->bbcode_second_pass_quote('', 'T')hat's insane. Something only a few hundred pounds getting that mileage... there are vehicles 10 times that weight getting better mileage!


Rolling resistance, which is a factor of weight and the coefficient of rolling resistance of your tires, is accurately represented as a linear relationship. Aerodynamic wind resistance, on the otherhand, varies as a square of velocity.

R = Cr x M x G

A = .5 x Cd x Fa x Rho x V^2

R is the total force in rolling resistance, Cr is the coefficient of rolling resistance of the tires, M is the vehicle mass, G is the gravitational acceleration 9.81 Newtons per kilogram.

A is the total force of aerodynamic drag, Cd is the coefficient of drag of the vehicle, Fa is the cross sectional area of the vehicle, Rho is a constant representative of air density and of whatever numbers are needed for the units you are using, V is the velocity of the vehicle.

The amount of power you need to go a certain speed is directly influenced by the forces that need to be overcome and how fast they need to be overcome.

A fared motorcycle will have a coefficient of drag of about .5, while your typical car has a coefficient of drag about .35.

You know what would get some absolutely awesome fuel economy AND have performance like that motorcycle? Take a small car like the Porsche Spyder James Dean got killed in. The Porsche Spyder weighed about 1200 pounds, very light. It also had a small 13 square foot frontal area, and about a .4 coefficient of drag, and got a decent 35 miles per gallon back in the 1950s and accelerated from 0-60 mph in 7 seconds. It could be improved upon, a lot. Ditch the stock body material, and replace it with carbon fibre/kevlar to get the weight down to about 800 pounds. Cover the rear wheel wells, add a full bellypan, make a plastic roof cover, and do all sorts of aerodynamic modifications that would get the coefficient of drag of that car down to about .20. Removed the stock gas engine, and put in its place a 112 horsepower turbodiesel from an Opel into it.

You'd have a car that could do 0-60 mph in 4-5 seconds, tops 180 mph with correct gearing, seats two, would absolutely murder modern overweight Porshes and Ferraris at a modern day Targa Florio, and get about 130 miles per gallon on 100% biodiesel.

Autobahn compatable!
The unnecessary felling of a tree, perhaps the old growth of centuries, seems to me a crime little short of murder. ~Thomas Jefferson
User avatar
The_Toecutter
Intermediate Crude
Intermediate Crude
 
Posts: 2142
Joined: Sat 18 Jun 2005, 03:00:00

I miss it

Unread postby drew » Sun 24 Jul 2005, 02:10:27

Oh speed!! I drive a subie wagon with about 45 hp, but I used to race bikes. I sure do miss the 10 second quarters, the rush, the crazy fury.

First off though, I 've got to say that people who drive or ride fast on public roads are serious assholes unless said road is completely empty (ethically, even that's pushing it). Putting others at risk is completely selfish when the driver/rider's only motivation is a thrill.

I talk from experience since I was a moto hooligan in my youth. My antisocial behaviour included being chased by the cops several times usually while hammered/impaired, numerous tickets, and thirteen crashes on pavement before finally taking it to the track (where it belongs).

The track experience was short lived due to poverty although I did snag 5th and 10th place finishes in two of the five weekends I raced. Racing cost me six grand in blown up equipment, and 4 more crashes, and is one of the best memories I will ever have. I can still smell the castrol R that the real race bikes ran (I raced a production bike), still hear the sounds, and ocasionally see the sparkle of stones in the pavement when driving that reminds me of the look of Shannonville, the track I rode at.

Once you've raced you really don't piss around on the street. I haven't bothered with bikes for 15 years, track or street.

I sure do miss it.

BTW the only reason I'm not dead or in a wheel chair is because God likes me. :-D In my seventeen crashes I never hit anything, and was only highsided a few times. Most of the time I slid along collecting road rash. The fastest I crashed was about 90 mph in a corner at the track (SCARY) . My worst injury was a broken collarbone around crash #6 or so.

Drew (1986 RG 500 gamma, plate #320)
User avatar
drew
Tar Sands
Tar Sands
 
Posts: 953
Joined: Thu 22 Jul 2004, 03:00:00
Location: canada

Unread postby oneoblivion » Sun 24 Jul 2005, 12:30:26

Completely agree about insane speeds on non empty public roads.

As to the fuel efficiency there are other cycles getting in the 70-80 mpg range, the buel blast for instance. However I enjoy speed and while it is still economical to enjoy it I will. :) Aside from the EV there is nothing that will out perform a modern motorcycle and still get gas mileage anywhere near that range.
User avatar
oneoblivion
Wood
Wood
 
Posts: 9
Joined: Mon 11 Apr 2005, 03:00:00

Unread postby hanrahan » Mon 25 Jul 2005, 09:49:21

In Australia, there is no limit on the Alice Springs to Darwin highway but you can still be booked for dangerous driving.

There is no limit for trucks either so before the railway was opened recently, the "road-trains" (three trailers behind the most powerful tractor available) would build up frightening speed on the long straits. Anyone in cars would just pull over and let them pass. BTW This is a single carriageway so you shared the road with trucks coming the other way. Scarry!

H
User avatar
hanrahan
Peat
Peat
 
Posts: 54
Joined: Tue 12 Jul 2005, 03:00:00


Return to Open Topic Discussion

Who is online

Users browsing this forum: No registered users and 1 guest

cron