How Fast Do You Drive

[quote]ATOMemphis wrote:
Furthermore, so everybody is not led astray from the O.P. generalities:
There are speed limits on the Autobahn.
[/quote]

I was under the impression that the only speed limit on the autobahn was the speed at which your tires are rated. As if you were doing 140 but your tires were only rated to 110 (whatever the letter is) you would get a ticket.

[quote]bullpup wrote:
Kayrob wrote:
During morning and afternoon rush hour in Houston, I get the old Camry up to oh, 10 or even 15mph sometimes.

Isn’t I-10 lovely in the morning? I do it too

Mazilla, if your passing either one of us in Houston traffic in the morning it’s either because you’re in an ambulance, the HOV lane, or in the grass, cause it’s nearily impossible to pass anyone around here in the morning especially on I-10, I-45, or 59.

With Houston traffic it takes 1 1/2 hours to travel 40 miles.

Bullpup[/quote]

don’t forget where the I-10 starts my friend. i live in california, need i say more about traffic?

[quote]rrjc5488 wrote:
ATOMemphis wrote:
Furthermore, so everybody is not led astray from the O.P. generalities:
There are speed limits on the Autobahn.

I was under the impression that the only speed limit on the autobahn was the speed at which your tires are rated. As if you were doing 140 but your tires were only rated to 110 (whatever the letter is) you would get a ticket. [/quote]

Some areas are deristrict

[quote]ATOMemphis wrote:
stig wales. wrote:
Grey what sort of car is that with 400 bhp ?
Also GAS or Petrol as we like to call it MUCH higher Octane in Western europe (not necessarily over Poland / Czech way though) unlike the piss weak shit they sell in the US.

European cars won’t run on anything under 95, which as far as I know isn’t widely available in US. Also the US Gallon is a fair bit smaller, but you probably know all this anyway. You can buy 98 and 99 octane at the pump readily too. Whilst US petrol is still lots cheaper, its less of a bargain when you compare the weak octane and smaller gallon size.

…because Higher Octane gas makes your car go faster…

This could be the dumbest thing I’ve heard in relation to cars. Higher compression ratios give higher power output from the engine. The higher compression requires higher octane gas to prevent knocking (detonation). All the higher octane gas does is raise the temperature at which the gas/air mixture ignites. In a higher compression engine, the lower octane gas would ignite under the compression cycle alone with no spark firing and thus: engine knocking. This occurs on hot summer days in older cars when you turn the key to the “off” position and the motor continues to ‘turn’ for another few cycles before dying.

Further, you should know that in the United States there are gas stations that carry up to 94 octane, to be used in high compression engines in hot weather or under extreme driving conditions. I’m so glad I don’t need to pay the extra 20-30 cents a gallon for gas that’s no better in getting me from A to B.

This gas is more frequently used to cut Turbo Blue/Sunoco (110 octane) race gas for motocross bikes so its cheaper as Turbo Blue costs a ton.[/quote]

tell me about it, 1970 cougar 351 cleveland 4v, 11.5:1 compression.

[quote]ATOMemphis wrote:
stig wales. wrote:
florin wrote:
“Drive”? Oh, that’s for things with four wheels, isn’t it?

I used to ride a pretty damn fast vehicle:

But now I’m taking a forced break, due to… um… a mistake in applying the front brake. :slight_smile:

stig wales. wrote:
Also GAS or Petrol as we like to call it MUCH higher Octane in Western europe (not necessarily over Poland / Czech way though) unlike the piss weak shit they sell in the US.

You are falling prey to a fairly common urban myth.

Lower octane does not mean “weaker fuel”. It just means that the mixture of fuel and air explodes under more relaxed conditions (under smaller temperatures and pressures).

If anything, high-octane fuel releases less energy, due to the additives required to make it more stable (less prone to explode in a fuel/air mixture). The difference is pretty small though.

You are needlessly trying to make me look stupid mate.

Eighty-seven-octane petrol the general stuff you get in the US is petrol that contains 87-percent octane and 13-percent heptane (or some other combination of fuels that has the same performance of the 87/13 combination of octane/heptane). 95 octane is therefore in the 95/5 combination meaning LITERALLY is not as WEAK as the 87/13 stuff, i.e the concentration of ocatane to heptane is STRONGER.

complete nonsense - see above POSTS regarding engines & octane. Car & Driver has done numerous printed studies showing the neglible performance gains & even decreases in Engine power output due to high octane gas. If the car doesn’t require the higher octane fuel, using it is not only wasting money but also contributing to “bogging” on acceleration.

Lower octane gas is actually “STRONGER” because it ignites easier, i.e. it is ‘more explosive’. Higher octane gas is ‘less explosive’ as its detonation requires a higher temperature. One might think that the higher temperature would equate to greater performance via the Carnot Engine function for efficiency but the change is neglible and the computers in a car regulating the fuel/air mixture ratio are calibrated for the lowest (cheapest) octane gas possible for the compression ratio.

To quote Triple T (Terry Tate): “don’t bring that weak-ass stuff up in this humpy bumpy!”

i’m all over some thermo & engine performance.
[/quote]

This argument isn’t really about octane and performance. It’s the euros taking shots at the North Americans again about how everything over there is better than it is over here. Come on already fellas, it’s good and bad everywhere in different ways.

DB

[quote]mazilla wrote:
bullpup wrote:
Kayrob wrote:
During morning and afternoon rush hour in Houston, I get the old Camry up to oh, 10 or even 15mph sometimes.

Isn’t I-10 lovely in the morning? I do it too

Mazilla, if your passing either one of us in Houston traffic in the morning it’s either because you’re in an ambulance, the HOV lane, or in the grass, cause it’s nearily impossible to pass anyone around here in the morning especially on I-10, I-45, or 59.

With Houston traffic it takes 1 1/2 hours to travel 40 miles.

Bullpup

don’t forget where the I-10 starts my friend. i live in california, need i say more about traffic?

[/quote]

Amen

The Autobahn is also a higher quality road than most US highway.

I drive two miles less per hour slower than the fastest car on the road, usually, on the theory that a highway patrolman will pick up any speeding person, but the fastest car on the road is both speeding more than I am and will also intercept any cruiser before I do. I live in Michigan, (and have lived in Ohio) so two miles per hour slower than the fastest car gets pretty fast. I am a nerd. I also have not had a speeding ticket in five years.

[quote]zarathus wrote:
The Autobahn is also a higher quality road than most US highway.[/quote]

indeed, i made the effort to point out why in a previous post. they use twice the paving layers as the interstates here.