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Paul
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Post by Paul »

Garty2010 wrote: ↑Wed Aug 23, 2017 7:43 pm :lol: Or a fat wife, is it reasonable grounds for divorce? :?:
Paul wrote: ↑Wed Aug 23, 2017 7:18 pm I wonder if a fat mate is classed as additional unsprung mass?
At, say, 100kg, he would wipe out any weight saving on the wheels...πŸ˜‰πŸ˜‰πŸ˜‚πŸ˜‚
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Garty2010
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Post by Garty2010 »

:o It was more a general question, so please apologise for me, I'm sure that she is just "big boned" ;)
Paul wrote: ↑Wed Aug 23, 2017 8:17 pm
Garty2010 wrote: ↑Wed Aug 23, 2017 7:43 pm :lol: Or a fat wife, is it reasonable grounds for divorce? :?:
Paul wrote: ↑Wed Aug 23, 2017 7:18 pm I wonder if a fat mate is classed as additional unsprung mass?
At, say, 100kg, he would wipe out any weight saving on the wheels...πŸ˜‰πŸ˜‰πŸ˜‚πŸ˜‚
😱😱😱....you know she's a member too, don't you.....?!?!
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brains1900
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Post by brains1900 »

Fat drivers and passengers are sprung weight
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Post by Deleted User 1874 »

Dandock wrote: ↑Wed Aug 23, 2017 6:34 pm Porsche claims the carbon-fiber wheels are 19 pounds, or 20 percent, lighter than the alloy wheels they would be replacing, which amounts to a nearly 75-pound weight reduction. They’re also said to be 20 percent stronger than Porsche’s regular alloys.

Well, you did ask. πŸ˜‚

And from Rennlist... courtesy of Rich...

My buddy John over at The Wheel Enhancement helped me out on this subject. I know that some of you guys/gals are dying to know actual weights. A big thanks to him for getting the info to us. http://wheelenhancement.com/

Here is what John had forwarded to me.

19” Base Wheel
8.5”x19” = 22lbs 11oz
11” x 19” = 27lbs 5oz

20” Carrera S Wheel
8.5” x 20” 23lbs 10oz
11” x 20 27lbs 12oz

20” Design Wheel
8.5"x20" 24lbs 11oz
11"x20" 30lbs 4oz

20” Classic Wheel
8.5"x20" 24lbs 3oz
11"x20" 28lbs 4oz

20” Sport Techno Wheel
9"x20" 27lbs 2oz
11.5"x20" 31lbs 1oz
That doesn't answer my question. We already know that a complete set of 4 wheels saves 8.5 kg over standard alloys (according to Porsche marketing blurb), but I want to know what the standard Turbo S wheels actually weigh, so we can judge if it's an impressive achievement or not. If the standard wheels are heavy (and I'll bet they are based on the example OEM weights you have quoted above) then a decent quality set of forged OZ's or similar wheels will probably save 20% or more too.
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Post by Deleted User 1874 »

Dandock wrote: ↑Wed Aug 23, 2017 6:31 pm Seriously... how does the rationale work for push bikes as carbon is the norm for all racing teams. Is it just that they're much simpler to construct?
Yes, much simpler and cheaper - basically just moulded. Not even in F1 is a carbon wheel considered viable, yet they use carbon chassis and suspension components routinely. Wet carbon layups are all very labour intensive. To make a wheel in carbon is not really viable with traditional carbon production methods, hence why Porsche have had to develop special machines at no doubt great expense. Are we going to see carbon wheels across the Porsche range soon? I seriously doubt it. Will they use this technology for something else, possibly outside of the automotive world? Quite probably.
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Post by Deleted User 1874 »

Kasfranks99 wrote: ↑Wed Aug 23, 2017 6:40 pm I would assume carbon wheels are not used in f1 because of the costs?
They need a hell of a lot of wheels just for 1 race.
Just a thought.
Teams buy their own wheels - invariably supplied by aftermarket wheel suppliers. When I was involved, a team needed to buy 100 sets per season, but that was back in the day when there was no restriction in usage or tyre blankets (so you would routinely have 10 sets of wheels in blankets ready to go). But if we go with say 50 sets at Β£16K a set, that's only Β£800K on wheels and you would surely get a discount on volume. Peanuts in F1 terms.
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Post by happy days »

What team(s) were you involved with Peteski?
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Post by Deleted User 1874 »

Garty2010 wrote: ↑Wed Aug 23, 2017 7:04 pm
I will not specify carbon, magnesium alloy or steel wheels, but will keep to my choice of 21" alloys, whatever they weigh.
Yes they will be heavy for sure, but you won't even notice or care. Otherwise you would go with 18s or 19s and save a fair bit of weight in the process.
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Post by Deleted User 1874 »

happy days wrote: ↑Thu Aug 24, 2017 10:10 am What team(s) were you involved with Peteski?
BAR, Honda, Jaguar, Red Bull, Williams at various points. Been totally out of it for 8 years now.
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Post by happy days »

Peteski wrote: ↑Thu Aug 24, 2017 10:13 am
happy days wrote: ↑Thu Aug 24, 2017 10:10 am What team(s) were you involved with Peteski?
BAR, Honda, Jaguar, Red Bull, Williams at various points. Been totally out of it for 8 years now.
I'm sure it must have been very interesting. I have a friend who currently is an aerodynamicist for Force India.
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