Automotive Myths

[newsuba]

For you youngsters who don't know any better.

http://autospeed.com/cms/A_111396/article.html

[nzkaosnz]

hmmm

cant say i agree w all them.... author seems a long way up his own ass/taking facts waaaaaaay outta context...

Not changing filter.... errr... so just leave the one it rolled from factory in there, despite many years living on dusty roads?

Backpressure is the main one i dont like, as you need a specific length/dia pipe for scavenging effect to work. Reading that article suggest that no header is best solution

And hydrogen... taking same view "damn, we have to transport this very flammable/vapourises readily/damages environment/poisonous/kept dry liquid around everywhere, which needs huge tankers to ship, and safe pumping methods... then all these places will be required to have specially vented underground tanks... (petrolium industry for those who havnt clicked on)

Also - its possible to harvest hydrogen from natural sources.

[pl0x]

i think he means replace them with another factor filter not go to after market etc

but like you i disagree with the back pressure one from what ive heard... but i cant really say anything because never changed an exhaust on any sort of decent powered car let alone dynod it for results. but with my first car - a 1500 lancer, it felt quicker with the factory muffler than it did with a straight threw big bore

[Guest keltik]

What an ass. My dyno sheets showed a clear loss of power with the same a/f ratio after changing exhausts. So it wasnt running leaner. Backpressure and scavenging is a pretty well accepted concept.

Definately got his head up his own ass.

[Guest]

 nzkaosnz said:

hmmm

Also - its possible to harvest hydrogen from natural sources.

Problem is it takes energy to harvest it !!

[Guest]

Its generally accepted for maximum hp you need the least backpressure possible....

Scavenging works on exhaust velocity / exhaust diameter size

[GC8E2DD]

 article said:

I don’t care whether it’s RWD, FWD or AWD. There are lots more important aspects of a car that affect its handling than which wheels are driven.

Whether a car is FWD, RWD, or AWD has a huge effect on the packaging of that car, and subsequently weight distribution. Apart from weight itself, I would have thought there are very few aspects that have more of an effect on chassis dynamics than weight distribution.

[Guest]

http://www.veryuseful.com/mustang/tech/engine/exhaustScavenging.pdf

[GC8E2DD]

I can agree that you can have good handling regardless of driven wheels, but I can't agree with his reasoning which is tenuous at best. He shouldn't have shown his working ...

[BC5RA]

None of it can be argued with.

Anybody who has kept there ears/mind open and there mouth shut, should be able to grasp the article.

[NotAWhiteGTB]

 Qwerty said:

http://www.veryuseful.com/mustang/tech/engine/exhaustScavenging.pdf

Cheers Qwerty, thats a good read. You always seem to find the best info first, have you ever thought of starting up your own search engine and naming it after you?.... hahaha

[GC8E2DD]

 BC5RA said:

None of it can be argued with.

Rubbish

[BC5RA]

 GC8E2DD said:

Rubbish

Go on then.

[D-Style]

This is CS everything is argued with.

bit a yawn read.

[BC5RA]

It's basic stuff, I'd like to see what he GC8E2DD can come up with.

[GC8E2DD]

 GC8E2DD']

[quote name='article said:

There are lots more important aspects of a car that affect its handling than which wheels are driven./quote]

Whether a car is FWD, RWD, or AWD has a huge effect on the packaging of that car, and subsequently weight distribution. Apart from weight itself, I would have thought there are very few aspects that have more of an effect on chassis dynamics than weight distribution.

[Joker]

thats covered by the statement:

 

Now you might well argue that some FWD cars don’t handle very well. Of course! That’s just like making the point that some RWD cars don’t handle very well. But it’s another thing altogether to suggest that for ‘real handling’ you need RWD.

[Guest]

 GC8E2DD']

[quote name='article said:

There are lots more important aspects of a car that affect its handling than which wheels are driven./quote]

Whether a car is FWD, RWD, or AWD has a huge effect on the packaging of that car, and subsequently weight distribution. Apart from weight itself, I would have thought there are very few aspects that have more of an effect on chassis dynamics than weight distribution.

So what you are saying is where the wheels are driven from does not make a difference per say but its the weight distribution?

[Joker]

which isnt the myth at all

[GC8E2DD]

 catsoup said:

So what you are saying is where the wheels are driven from does not make a difference per say but its the weight distribution?

Exactly. And even though you can make a front wheel drive car with its engine in the back, this is not how manufacturers do it. Besides the fact that you are still asking the front wheels to manage both turning and driving. Historically, and probably to this day, front wheel drives are made that way because it is cheaper, and you can gain internal space over rear wheel drive and four wheel drive packaging. Not because it is the ideal platform for handling. A massive amount of effort is put into fiddling the suspension geometry of a front wheel drive car to offset the basic compromise that puts the majority of the vehicle's weight at the front. You can have a great handling front wheel drive car, but his statement that brushes aside the importance of driving wheels for handling misses the point - weight distribution.

[Guest]

explain with your reasoning how a porsche works with weight distribution having the motor behind the rear wheels.

[newsuba]

Mountains, molehills and general lack of comprehensive skills abound.

:

[Guest]

[funkytown]

 Qwerty said:

gold

[Jammasta]

Hahaha