Lexus LF-A: The Long and Winding Road

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And GT-R was supposed to have electrically assisted turbos and 7 gears.. and electric motors in the front wheels..
 
Well, autoblog managed to get a video of the loom used to construct parts of the LF-A...

You can view here...

It is pretty much mind boggling to watch.
 
Heh. That's cool. I'll bet we see a lot more of those in the future. :3

There are other machines like it, but they only work one strand at a time. This one is whole buncha at once, and, I'd think, would be a key to CFRP being a bit less expensive.

That's Manufacturing. :3
 
Wow, that is very impressive indeed. It wasn't so long ago that factories were burning coal in furnaces to creat steam to power machines that did pretty simple tasks. How technology has progressed during the last century.
 
Not surprised. It's like asking why other manufacturers don't insulate their engine bays with gold-leaf like McLaren did with the F1. Sure, it's an amazing technical solution... but that doesn't make it cheap.
 
Yet. Nicky, If you had to choose between five of those million-dollar machines, with one operator at, oh, say, $40,000 a year, over ten or twenty workers, working at 40,000 a year, EACH, Including sick days, Vacation, breaks, and medical and retirement coverage on top of that...

Well, eventually, the machines would pay for themselves. And, as demand increases, you'll need more of those weavers, more operators...
 
The carbon fiber itself is tres, tres expensif.

And unless you're using carbon fiber, you won't need such a loom.

And producing carbon fiber pieces on a loom doesn't replace that many workers... it just replaces the ones who hand-lay carbon-fiber... probably brings the production cost of a half-million dollar exotic down to about $400k... :lol: ...but doesn't mean much for the regular consumer... yet.

There are other possible ways of mass producing CF parts that don't require complicated machines that can only weave parts at a slow rate... I particularly like dry carbon stamping, myself.
 
I know this, but you've gotta consider the structure the engineers might be going for. The actual Carbon isn't that expensive, either, not as expensive as the resin (Carbon being one of the most abundant elements on Earth, and graphite relatively easy to make,) But the only real new thing with this loom is the use of multiple CF strands. There's been machines for years that wrap an epoxy-coated strand of CF around a mandrel...I forget the exact name of the process, but it's used for CF tanks.

As well, with the prepreg sheets that are typically used in hand lay-up, they still have to be stored in a special state because of the epoxy. That means higher inventory costs. This process puts the resin on the carbon as it goes on. I think this "loom-weaving" is a useful process, especially as it eventually gets more accurate and faster.
 
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The carbon fiber itself is tres, tres expensif.

And unless you're using carbon fiber, you won't need such a loom.

And producing carbon fiber pieces on a loom doesn't replace that many workers... it just replaces the ones who hand-lay carbon-fiber... probably brings the production cost of a half-million dollar exotic down to about $400k... :lol: ...but doesn't mean much for the regular consumer... yet.

There are other possible ways of mass producing CF parts that don't require complicated machines that can only weave parts at a slow rate... I particularly like dry carbon stamping, myself.

Yeah but does that twist-laid fiber have more rigidity in more dimensions than just a square weave pressed into whatever shape?
 
Honestly... I don't know if it's better... though having the strands continuous from one end of the piece to the other should greatly increase part longevity.
 
I don't really know if they're based on that... The rotary loom involves weaving strands of carbon fiber in and out of each other, while this video simply illustrates a winding process.
 
I though this was interesting and pertains to this conversation.

MSN News
Not every car at the Tokyo Motor Show was out to save the planet. Lexus unveiled its much-talked-about LFA to the delight of horsepower junkies everywhere. With a baby-seal-clubbing 552 horsepower and 354 lb-ft of torque from a 4.8-liter V10 engine, the car will be limited to just 500 examples. If that's not bizarre enough to stir your coffee, the price tag should be. Toyota, er, Lexus will be asking $375,000 per car. However, dealers will probably want a bit more than that.

lexuslfa.jpg


direct link: http://editorial.autos.msn.com/slideshow.aspx?cp-documentid=1101451#11
 
The body kits do pull your attention away from some of the nastier aspects of the design, and they completely eliminate others...
I approve.
 
the 0-60 MPH time of the Lexus LFA was what again?

500x_lexus_lfa_acceleration.jpg
 
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