Own an RC-F Carbon Edition? This is interesting!

[Flytvr]

 

[Big Rat]

@Flytvr Davi you know what that reminds me of....... the inner workings of my mind when a certain persons wonderful  wife place a lovely round piece of tiramisu in front of me a few hours ago.............

🐀

[Flytvr]

54 minutes ago, Big Rat said:

@Flytvr Davi you know what that reminds me of....... the inner workings of my mind when a certain persons wonderful  wife place a lovely round piece of tiramisu in front of me a few hours ago.............

🐀

Great to see you today fella.  Loving your new car!

[Flytvr]

Better quality video 

[Linas.P]

Amazing indeed...

Just to be clear don't confuse Carbon fibre with CFRP.. net the same thing... 

[J Henderson]

Equally impressive is the fact that, I believe they (Toyota/Lexus) do all their carbon work in-house (most manufacturers outsource this type of thing to a specialist) and pretty-much leaned "on the job" to build the LF-A. Scrapping the original design (made of "lesser" materials like aluminium etc) in the process. 

[Guest]

Toyota started as a weaving company - hence the toyota logo of 2 loops.



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[Linas.P]

Most major manufacturers do their own Carbon fibre on volume models e.g. BMW, MB... the smaller ones outsource it e.g. McLaren, Pagani.. I think Ferrari as well outsourced the carbon on say less volume LaFerrari, but makes most of parts of say 458 in house.

By now carbon weaving technology is nothing new, it is matter of volume which decides if it is worth building weaving line in-house or rates outsourcing it to specialist.

I believe BMW was the first company to mass produce Carbon Fibre (though for accuracy BMW M3 roof is CFRP as well). What is different with Lexus and LF-A is that Lexus knew they only going to make very limited numbers, yet they still gone with in-house weaved carbon fibre body.. which at the same time impressive in technology and in the amount of money wasted to build robotics just for few car.

[Guest]

Carbon fibre is a strand of carbon. It's pretty useless on its own and you can pull it apart very easily with your fingers. It is weaved to give strengths in different directions as it is only strong in tension due to the molecular bonds. Once you have the multididirectional pattern specified by the design it is impregnated with resin and baked. The resin holds the fibres in place and protects them and adds compression resistance.

I can't think of a product that is carbon fibre without the resin. It's as much use as tissue paper. It's not strong like say a cotton sheet, you can literally pull it to pieces in seconds and accidentally so has to be handled with care. The weave is very loose.

People just call cfrp carbon fibre for ease of speaking.

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[Linas.P]

What I meant is that Carbon reinforced plastic - the plastic part, with little bit of carbon for either added strength or purely for looks, is not the same as what I consider Carbon Fibre, which is carbon fibres layered and glued together with (polymer) resin. Now obvious abbreviations are a bit confusing as both could have the same one - CFRP. And carbon reinforced plastic parts were used in several cars now..

I (wrongly) assumed that RC-F has plastic panels reinforced with carbon when somebody mentioned CFRP, whereas it actually just have normal carbon fibre parts (at least I learned something new).

[tomRCFcarbon]

We’re all pretty much talking about the same thing, CRFP is ‘carbon fibre’. 

https://en.m.wikipedia.org/wiki/Carbon_fiber_reinforced_polymer

4 hours ago, Comedian said:

can't think of a product that is carbon fibre without the resin. It's as much use as tissue paper.

There’s quite a few speaker manufacturers that use the weave in their mid/bass cones with very little and sometimes without any resin at all, Wilson Benesch being one... B&W use Kevlar (amongst other things now) rather than Carbon fibre which has similar strength but is more flexible which they say gives a better dispersion pattern when flexed and causes less distortion than an identically shaped cone made out of carbon fibre. 

FUN FACT: My GT STS XCR-1000 mountain bike from 2000 is made out of thermoplastic and the weave is very similar to the bonnet of my RCF (just less lacquer!). 

[Linas.P]

There is difference between plastic reinforced with CF and CF. For example BMW i8 uses both, the body monocoque is build from CFRP (or carbon fibre reinforced polymer) and body panels form plastic reinforced with CF.. which is still CFRP. The difference is the weave and in the percentage of CF... I am no expert, but body will be maybe 80% carbon fibre and 20% polymer resin, whereas panels will be maybe 5% carbon and 95% of thermoplastic (% just to illustrate example).

[Guest]

We’re all pretty much talking about the same thing, CRFP is ‘carbon fibre’. 
https://en.m.wikipedia.org/wiki/Carbon_fiber_reinforced_polymer
There’s quite a few speaker manufacturers that use the weave in their mid/bass cones with very little and sometimes without any resin at all, Wilson Benesch being one... B&W use Kevlar (amongst other things now) rather than Carbon fibre which has similar strength but is more flexible which they say gives a better dispersion pattern when flexed and causes less distortion than an identically shaped cone made out of carbon fibre. 
FUN FACT: My GT STS XCR-1000 mountain bike from 2000 is made out of thermoplastic and the weave is very similar to the bonnet of my RCF (just less lacquer!). 

Kevlar is different and why you have kevlar body armour and not carbon.

Kevlar is owned soley by dupont I understand.

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[Guest]

There is difference between plastic reinforced with CF and CF. For example BMW i8 uses both, the body monocoque is build from CFRP (or carbon fibre reinforced polymer) and body panels form plastic reinforced with CF.. which is still CFRP. The difference is the weave and in the percentage of CF... I am no expert, but body will be maybe 80% carbon fibre and 20% polymer resin, whereas panels will be maybe 5% carbon and 95% of thermoplastic (% just to illustrate example).

People say aluminium. When really it's often aluminium alloys of varying types. People say a lot.

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[DAW]

20 hours ago, J Henderson said:

Equally impressive is the fact that, I believe they (Toyota/Lexus) do all their carbon work in-house (most manufacturers outsource this type of thing to a specialist) and pretty-much leaned "on the job" to build the LF-A. Scrapping the original design (made of "lesser" materials like aluminium etc) in the process. 

The LFA was produced using the tech from the disbanded F1 team factory if I remember correctly.

[Guest]

There is an lfa documentary on YouTube that's worth a watch.

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[DAW]

Think I watched one of those how it’s made documentaries one evening. Was very impressive stuff.

[J Henderson]

A great watch indeed. Others in the Megafactories series on other marques are also worth a look.

 

[Flytvr]

51 minutes ago, Comedian said:

There is an lfa documentary on YouTube that's worth a watch.

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Great find Sean. Just watched it. Brilliant!