New 991 GT3
Posted: Mon Mar 04, 2013 11:00 pm
The Scottish Elise Community Online
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https://www.scottishelises.com/phpbb/viewtopic.php?f=2&t=35729
Interesting one this. There still seems to be a mental block in some people with these twin clutch boxes, myself included, until I spent some time with one. Now I'm converted. I wouldn't buy a modern Porsche or VW without one. They elevate the car to another level in my experience.H8OAG wrote:Agreed
Even with PDK
When have Zee Germans ever not had confidence in their product ?!Lazydonkey wrote:fcuk me. Talk about confidence in your product.![]()
You're thinking pushrods and rockers...tut wrote:Wonder if they will upgrade the GT3RS 4.0 as well, as that has not been running for that long.
He mentioned that one improvement made was a return to rocker arms, but was that not what we had years ago?
tut
Technically masterful and would probably agree that for a daily driver, they are now a no-brainer. However, part of the interactive experience of driving a proper sports car for me is mastering the gearchange. This robs you of that layer of interaction and IMO is a mistake for the last of the great analogue supercars. To not offer even an option makes me sad.Jeremy wrote:
Would be keen to hear the thoughts of others on these gearboxes.
I know - but he talks with such confidence and such credibility that you just KNOW it will be as good as they're claiming. There's no PR spin there is there !Jeremy wrote:When have Zee Germans ever not had confidence in their product ?!Lazydonkey wrote:fcuk me. Talk about confidence in your product.![]()
Though of course what you gain in rotational mass, you lose in torque load on the crank which has to turn these "inefficient" levers. Not to mention the pressure on the lobes increases, though no doubt if you can have titanium piston rods, you can also have cams made of a suitable metal to withstand that load.Shug wrote:You're thinking pushrods and rockers...tut wrote:Wonder if they will upgrade the GT3RS 4.0 as well, as that has not been running for that long.
He mentioned that one improvement made was a return to rocker arms, but was that not what we had years ago?
tut
Not read into it, but I'll bet they'll be using rockers which amplify the action of the (still overhead) cam, making the cam lighter, with less rotational mass than if the cam itself provided the full lift. Several F1 engines use the same, rather than cams acting directly on bucket followers.
I went from a Cayman S (quick shift) and Fabia vRS, both manual, to a Golf GTi with DSG.........I now would would not buy without some form of semi-auto (997 GT3 being the exception).Jeremy wrote: Would be keen to hear the thoughts of others on these gearboxes.
You didn't, but Herr Porsche said it was ... so obviously there is something unique about their implementation of it. I suggest we buy one and immediately dismantle it, to look see what it's all aboutShug wrote:Never said it was new - what is?