US Headers & Exhausts NA

[booerns]

For entertainment...throw a flat bottom wheel in the mix...

Sent from my GT-P1000T using Tapatalk 2

[Dupain]

^wait so you aren't even going to install them yourself ?
Didn't you have a huge go at nearly all of us for not modifying our own cars... ?

Can't fix the leak myself. The HKS header has to be taken out and it's flexi pipe replaced.

[Dupain]

Don't be mean guys, it didn't even come with instructions... how was he meant to be able to figure out how something as complicated as a steering wheel works??

Give him a break. Steering wheels have advanced a lot, you know. A Chinese man with his math trickery worked out that round was better than square and unfortunately they haven't updated the instructions to help with the round ones yet.

I'll give you guys a case of beer if you can put the Nardi Classico together without any help.

The set up is not like other aftermarket wheels.

http://forum.miata.net/vb/showthread.php?t=299316


"I did a bit more searching and found this thread with a great post by JeffHo830 (#7) that shows the order and reveals the secret which involves a tiny flathead screwdriver. I would not have guessed that is the actual way to install it, but it worked and the wheel looks good! "

[booerns]

The set up is not like other aftermarket wheels.

http://forum.miata.net/vb/showthread.php?t=299316


"I did a bit more searching and found this thread with a great post by JeffHo830 (#7) that shows the order and reveals the secret which involves a tiny flathead screwdriver. I would not have guessed that is the actual way to install it, but it worked and the wheel looks good! "

Well good sir I believe you owe me a case of beer then! I bought a Nardi Classico deep corn replica as a test fit before biting the bullet on the real thing as I didn't want to spend $300 on something I potentially had no idea if I liked or not. Not only do the install instructions from your miata.net link sound exactly the same for the rep but we're exactly the same for my real Nardi that I bought a few months after. And yes, I managed to easily install both of them with absolutely no dramas whatsoever.

[Dupain]

The set up is not like other aftermarket wheels.

http://forum.miata.net/vb/showthread.php?t=299316


"I did a bit more searching and found this thread with a great post by JeffHo830 (#7) that shows the order and reveals the secret which involves a tiny flathead screwdriver. I would not have guessed that is the actual way to install it, but it worked and the wheel looks good! "

Well good sir I believe you owe me a case of beer then! I bought a Nardi Classico deep corn replica as a test fit before biting the bullet on the real thing as I didn't want to spend $300 on something I potentially had no idea if I liked or not. Not only do the install instructions from your miata.net link sound exactly the same for the rep but we're exactly the same for my real Nardi that I bought a few months after. And yes, I managed to easily install both of them with absolutely no dramas whatsoever.

Nardi Classico deep corn replica is different to the Nardi Classico 330mm or 340mm

[Dupain]

Agreed. Looks like a dog's breakfast, those unequal length runners.

If this is "tuned", it is done badly. I can't think of a good reason to deviate from what is tried and tested design for equal lengths.

For example, Xforce 4-2-1 design below showing how curls are used to achieve equal lengths.

The welding looks very average to me. The whole thing looks like a nightmare. If it's too cheap then that's what it will be. If it does not fit bad luck. Detergent meths vodka Yeah that will make the difference.

That's a very nice set of extractors....if the work half as well as they look they'd be brilliant

Funny how you guys are comfortable with X Force. They're also made in China. Probably the locals selling them makes you feel at ease.

[plohl]

^ It's more likely because when they market them as an equal length set of headers, THEY ACTUALLY ARE EQUAL LENGTH!

[markwid]

[Odd]

Agreed. Looks like a dog's breakfast, those unequal length runners.

If this is "tuned", it is done badly. I can't think of a good reason to deviate from what is tried and tested design for equal lengths.

For example, Xforce 4-2-1 design below showing how curls are used to achieve equal lengths.

The welding looks very average to me. The whole thing looks like a nightmare. If it's too cheap then that's what it will be. If it does not fit bad luck. Detergent meths vodka Yeah that will make the difference.

That's a very nice set of extractors....if the work half as well as they look they'd be brilliant

Funny how you guys are comfortable with X Force. They're also made in China. Probably the locals selling them makes you feel at ease.

There are several issues....

The design looks right (see plohl's comment)
It looks very well made(minimal pieces, clean welds)
and Yes....being sold by a local company there is back up

A little story....I've been to China several times to buy building materials
We were looking for an Aluminium panel (alucabond type material)
A company we approached had a 6mm thick product that meet all the specifications....and was well priced
they also offered a 4mm thick option....when asked for the specification....they said
"No specification for this product....but cheaper"

China can produce very good products and materials....for a very competitive price
but if you want really really cheap, they can do that too....
It's up to the buyer to sort out what is value....verses what is cheap rubbish
China is prepared to provide what the market is prepared to pay for
you want cheap and nasty....they will provide
but....they can also do it well....but not for nothing

GOOD LUCK!

[speed]

Dupain, you definitely score points for originality!
We've all come so far with this thread. Look forward to seeing pics of the fitted product.


Sent from my iPhone using Tapatalk

[project.r.racing]

This thread of LOL just keeps getting better and better.

[Dupain]

Fluid dynamic wizards the Chinese. Check what they've done now ...

Chinese reportedly working on super-fast submarine that would ‘fly’ in an ‘air bubble’
Date
August 27, 2014 - 5:17AM
405 reading nowRead later
Terrence McCoy

A 'supercavitating' submarine creates a bubble of air that encompasses the whole vehicle by ejecting gas through the nose with enough force that it forms water vapor. This greatly reduces drag and allows it to travel at high speeds not possible by standard submarines.
A 'supercavitating' submarine creates a bubble of air that encompasses the whole vehicle by ejecting gas through the nose with enough force that it forms water vapor. This greatly reduces drag and allows it to travel at high speeds not possible by standard submarines. Photo: The Washington Post
In the annals of vehicular locomotion, the submarine is the equivalent of the Walkman. It dazzled the masses when it hit, flexing nuclear-tipped missiles that completed the "nuclear triad" of deterrence.

But other technologies soon surpassed it in terms of speed and agility. Now, years later, the submarine may be making a comeback — at least theoretically. Researchers at the Harbin Institute of Technology in northeast China tell the South China Morning Post that they're hard at work on a submarine that the newspaper claims could travel the 6100 miles (9820 kilometres) from "Shanghai to San Francisco in 100 minutes."

That's not in the cards. But there's plenty of reason to believe a submarine could be built that would significantly exceed the speed of today's fastest models, which lumber along at a speed of 40 knots (about 75km/h.) It all has to do with friction and how to conquer it.

The reported plans for the super-fast Chinese submarine draw on research that reaches back to the Cold War on "supercavitation," a technology that creates a friction-less air "bubble" around a vessel that allows it to "fly" underwater, facilitating incredible speeds. The Russians have developed torpedoes that travel faster than 370km/h using that approach.

Now researchers at Harbin's Complex Flow and Heat Transfer Lab are reportedly figuring out how to use that science to build submarines. "We are very excited by its potential," lead researcher Li Fengchen, a professor of fluid machinery and engineering, told the South China Morning Post. "… Our method is different from any other approach, such as vector propulsion," which involves engine thrust. Rather, he would lubricate the vessel in a special liquid that would reduce water friction until the vessel would reach speeds high enough to enable "supercavitation."

How could a vessel reach such high speeds in the first place? And how would it be steered? Li says the liquid membrane would navigate the vessel. "By combining liquid-membrane technology with supercavitation, we can significantly reduce the launch challenges and make cruising easier," he told the Chinese publication.

Increasing or decreasing the liquid membrane would manipulate friction to steer the ship. The specifics of the research are being kept under wraps for now, South China Morning Post reporter Stephen Chen told the Washington Post.

"These studies in China do not go to academic papers, but the technology is being tested in the laboratory," he wrote in an email. "The scientists have received pressure from authorities due to the sensitivity of the research and they hope the matter can cool down a bit."

The potential of supercavitation has not gone unnoticed by the US Navy. "Some technologies innovations have so significant an impact on our way of doing business that they are often described as 'disruptive technologies,' with the potential to change the future," said a 2002 paper published in Undersea Warfare, the official publication of the submarine force. One of them, it said, was " 'supercavitation' techniques."

The Defence Advanced Research Projects Agency was once reported to be doing much the same, and Popular Science says the project would have allowed the "delivery of men and material faster than ever." That's exactly the end game for the Chinese research team: civilian transportation — or even swimming.

"If a swimsuit can create and hold many tiny bubbles in water, it can significantly reduce the water drag," Li explained. "Swimming in water could be as effortless as flying in the sky."

Still, questions remain. Wang Guoyu, who leads the Fluid Mechanics Laboratory at Beijing Institute of Technology, expressed doubt at its success. "The size of the bubble is difficult to control, and the vessel is almost impossible to steer," he told the South China Morning Post, adding that if any part of the ship breaches the bubble, it would snap off due to the density difference.

Plus, he said, "the primary drive [behind the research] still comes from the military, so most research projects are shrouded in secrecy".



Read more: http://www.smh.com.au/world/chinese-rep ... z3BXmnNj84

[sailaholic]

Now they are copying Russian work!

Should be even noisier then a Collins class and just as relevant to your exhaust!


Sent from my iPhone using Tapatalk

[project.r.racing]

Fluid dynamic wizards the Chinese. Check what they've done now ...

They have done nothing. Hence the wording like "working on", "reportedly", "theoretically".

Good try Da Plane. But it really just reads as a university trying to get some headlines.

Shouldn't you be at the exhaust shop anywhay getting your fluid dynamically proven headers installed? Not trying to converse with stoopid Australians?

[hks_kansei]

I just love the assumption that every Chinese person and company all possess the exact same knowledge and skills.

I've never been to China, so perhaps I was wrong in assuming it was full of people much like every other nation, perhaps the Chinese are some form of amorphous blob that hold the collective knowledge of the entire nation?

Surely China is a land where every person is identical, where there are no stupid people, where there are no lazy people, where there are no unskilled people.
Surely if one organisation can design a fast submarine then so can a small exhaust manufacturing firm!