The daftest shite creations...

[horriblemercedes]

I'm pretty sure they're fibreglass-reinforced resin

[MiniMinorMk3]

2 hours ago, somewhatfoolish said:

The spiel you put in literally says they're made of CF? Why are you picking an argument with yourself?

The point I am making is that they are not made from carbon weave, as all products that are described as carbon fibre are today.

[SteersWithThrottle]

Also, were they baked in an autoclave, like modern CF composites, or just allowed to cure like FRP?

[somewhatfoolish]

Without dissecting an SM wheel or access to a detailed manufacturing method statement who knows? Michelin may have included orientated fibre as well as random short fibre, it's impossible to say from the little information available online. This article describes it as a sheet moulding compound; many were experimenting with this technique at the end of the 60s, IIRC Lotus made at least part of their 70s output using this method. It and related methods are widely used, short fibres are in many products. This is somewhat marketing blether as is this but it makes the point.

  

6 minutes ago, SteersWithThrottle said:

Also, were they baked in an autoclave, like modern CF composites, or just allowed to cure like FRP?

I'd be surprised if they weren't autoclaved, it would be difficult to get a consistent product from SMC without cooking it.

[MiniMinorMk3]

Looks nothing like carbon fibre to me

Restoration of Michelin RR wheels (citrowagon.fr)

Theme : Wheels – Citroën’s Plastic Wonder – Driven To Write

Quote

Apparently derived from a NASA patent (used on moon buggy wheels) the wheel is a one piece, technologically advanced, reinforced resin casting, being almost 1/3 of the weight of the equivalent steel wheel and much stronger. Since carbon plays a part in the reinforcement, you will come across rash claims that RR wheels are, in fact, carbonfibre. That has some justification, but only if you believe that scrambled eggs are a souflée. Nevertheless, the wheels seemed to be of great technical merit and Michelin proposed them to various carmakers. In the early 70s, Lincoln even tested them on a Continental

 

[somewhatfoolish]

I don't know the mix of fibres Michelin used, I suspect Michelin don't know either as the folk who made the rims are dead or retired. There is carbon fibre in there, to me that makes them CF rims as with glass only reinforcement it would be very difficult to make a stiff enough rim, equally a pure CF reinforcement would be bad just as it was for Rolls Royce in the 1970s; you differ along with souffle man. Perhaps we should agree to disagree. 

[Metal Guru]

3 hours ago, somewhatfoolish said:

I don't know the mix of fibres Michelin used, I suspect Michelin don't know either as the folk who made the rims are dead or retired. There is carbon fibre in there, to me that makes them CF rims as with glass only reinforcement it would be very difficult to make a stiff enough rim, equally a pure CF reinforcement would be bad just as it was for Rolls Royce in the 1970s; you differ along with souffle man. Perhaps we should agree to disagree. 

The correct terms are uni-directional ( short chopped fibres in the resin matrix ) and woven carbon fibre reinforced  composite.
The term carbon fibre is correctly only applicable to the actual fibres ( of any sort), but as usual the laziness of the media regarding anything scientific, leads to misnomers and misunderstanding in the non scientific community.

Carbon fibre alone is pretty useless , it requires a resin ( often epoxy), to hold it together. No car has pure carbon fibre in it.
Carbon fibre reinforced composites are pretty similar to glass reinforced fibre composites (  fibre glass), but has strength and weight advantages so is most  useful for high performance automotive and aerospace applications.

Typically sheets of carbon fibre impregnated with a semi cured resin are laid in a mould , and moulded in an autoclave oven where a gas ( nitrogen ) is introduced to apply an even pressure all over the surface of complex shaped parts ensuring no voids are present in the finished composite.

[bunglebus]

It's good for making submersibles out of too. 

[Leyland Worldmaster]

Want a Citroën DS? Garage too small? Is a standard DS rather unwieldy around town ? 

Behold the DS SWB Sport+ 

[bunglebus]

On 05/08/2023 at 23:38, gm said:

ok, how about this one then ?

huge levels of wtf here 

 

26 minutes ago, Leyland Worldmaster said:

Want a Citroën DS? Garage too small? Is a standard DS rather unwieldy around town ? 

Behold the DS SWB Sport+ 

Echo...echo...

[Muniphobia]

[Muniphobia]

Mazda 6  3.5

[Metal Guru]

On 09/08/2023 at 02:43, Muniphobia said:

Looks like someone with absolutely no idea ( and possibly no eyesight either), was told to fit various parts to the car.

They've had at least 10 attempts at the shock absorbers and couldn’t even get the furry dice right.

[New POD]

On 08/08/2023 at 20:44, Leyland Worldmaster said:

Want a Citroën DS? Garage too small? Is a standard DS rather unwieldy around town ? 

Behold the DS SWB Sport+ 

I like that.  Wheels are made of white chocolate, which technically isn't chocolate at all. Cue a page of discussion over whether Cadburys or Nestle were the first to make white chocolate wheels. They never really took off did they? .  About as much use as magnesium wheels in a fire. 

[Muniphobia]

[Muniphobia]

[Muniphobia]

[MiniMinorMk3]

[Metal Guru]

12 hours ago, MiniMinorMk3 said:

Cut’n’ shut? No! Whatever made you think that?

[Muniphobia]

[Metal Guru]

34 minutes ago, Muniphobia said:

Wouldn’t be seen dead in either of those. Someone might think you’re Mel Gibson FFS!

[bunglebus]

20 hours ago, MiniMinorMk3 said:

There have been so many shorty VW buses created over the years! I always wonder if the spare bits are used to make the occasional stretched ones you see

[Supernaut]

6 hours ago, Metal Guru said:

Wouldn’t be seen dead in either of those. Someone might think you’re Mel Gibson FFS!

*Tom Hardy

[MiniMinorMk3]

[MiniMinorMk3]

[AnthonyG]

From a dealer ad in the April 1966 issue of MotorSport. 

Someone had an old Bentley and a hankering for a ‘61-64 Lagonda Rapide…

[bunglebus]

On 18/08/2023 at 11:05, MiniMinorMk3 said:

Heavily modified Mayers Manx buggy. Seems to be quite a well known car after doing some digging

[Muniphobia]

[Metal Guru]

8 hours ago, Muniphobia said:

Rejected Popemobile design.

[MiniMinorMk3]