RE: New TVR Griffith - official

RE: New TVR Griffith - official

Author
Discussion

Equus

16,927 posts

102 months

Saturday 16th September 2017
quotequote all
TA14 said:
The designer decides what value he would like the downforce to be and sets the aero accordingly. Note that the designer sets the amount of downforce - it is not a function of weight.
Not to any great degree, he doesn't - not without the aerodynamic aids you've said we don't have.

No designer in his right mind would design a ~200mph car with more lift (or less downforce) that he can possibly achieve from a functional shape.

Fish

3,976 posts

283 months

Saturday 16th September 2017
quotequote all
I have done a genuine 11.98sec 1/4 mile in a standard Tusvan gen 1 at Santa pod back in the day. ..they were a quick car. ..

StottyGTR

6,860 posts

164 months

Saturday 16th September 2017
quotequote all
TA14 said:
StottyGTR said:
TA14 said:
StottyGTR said:
Don't know if I need a parrot here or not but that's because weight doesn't influence top speed, except from a negligible increase in rolling resistance.
Weight doesn't even increase rolling resistance for top speed. Without aerodynamic aids uplift is greater than weight so weight won't add any rolling resistance.
So if I top out a 1500kg car, then put a 500kg weight inside and do the same again, you're telling me the rolling resistance will be identical?
No.

Stick with the weight aspect that you started with. At low speeds, say up 40mph, weight has an effect on rolling resistance and significant at that because the down force = weight + aerodynamic aids and aero will do very little at that speed. At 200mph the weight won't be enough to resist the natural tendancy of the car to lift, since cars are generally the same shape as a wing, so aerodynamic aids are required. The designer decides what value he would like the downforce to be and sets the aero accordingly. Note that the designer sets the amount of downforce - it is not a function of weight.
I don't have any qualifications to back me up here but I'm pretty certain that isn't correct.

ADDLED

145 posts

203 months

Sunday 17th September 2017
quotequote all
At £90k i assume it comes with its own tow truck: 1) to drag you home when it breaks down. 2) to drag you to hospital when youve exceeded 50mph and it buried you in a ditch.

RumbleOfThunder

3,558 posts

204 months

Sunday 17th September 2017
quotequote all
ADDLED said:
At £90k i assume it comes with its own tow truck: 1) to drag you home when it breaks down. 2) to drag you to hospital when youve exceeded 50mph and it buried you in a ditch.
Stale bants. In 2003.

Griffithy

929 posts

277 months

Sunday 17th September 2017
quotequote all
ADDLED said:
At £90k i assume it comes with its own tow truck: 1) to drag you home when it breaks down. 2) to drag you to hospital when youve exceeded 50mph and it buried you in a ditch.
None of my TVR friends have wrecked their TVRs yet. (Thank god for it).
But all(!) my Porsche driving friends have managed to wreck one or the other of their 911s.
Maybe Porsches are just pulling crap drivers obviously afraid of proper sports cars.
Long may it last.
biggrin



anonymous-user

55 months

Sunday 17th September 2017
quotequote all
Griffithy said:
None of my TVR friends have wrecked their TVRs yet. (Thank god for it).
But all(!) my Porsche driving friends have managed to wreck one or the other of their 911s.
Maybe Porsches are just pulling crap drivers obviously afraid of proper sports cars.
Long may it last.
biggrin
You can't wreck a car that won't start. biggrin

Griffithy

929 posts

277 months

Sunday 17th September 2017
quotequote all
fblm said:
You can't wreck a car that won't start. biggrin
Absolutely right.
TVR owners tend to keep batteries charged to avoid starting issues though.
biggrin

DonkeyApple

55,378 posts

170 months

Sunday 17th September 2017
quotequote all
ADDLED said:
At £90k i assume it comes with its own tow truck: 1) to drag you home when it breaks down. 2) to drag you to hospital when youve exceeded 50mph and it buried you in a ditch.
Ooh. One of those insecure types have finally arrived from the VAG forum. It was always too good to last. Hopefully you'll go back from whence you came and revert to wrist timing your afternoon away. wink

ADDLED

145 posts

203 months

Sunday 17th September 2017
quotequote all
RumbleOfThunder said:
ADDLED said:
At £90k i assume it comes with its own tow truck: 1) to drag you home when it breaks down. 2) to drag you to hospital when youve exceeded 50mph and it buried you in a ditch.
Stale bants. In 2003.
I have no idea what that means. Is it beyond your capability to speak basic English?

ADDLED

145 posts

203 months

Sunday 17th September 2017
quotequote all
Griffithy said:
ADDLED said:
At £90k i assume it comes with its own tow truck: 1) to drag you home when it breaks down. 2) to drag you to hospital when youve exceeded 50mph and it buried you in a ditch.
None of my TVR friends have wrecked their TVRs yet. (Thank god for it).
But all(!) my Porsche driving friends have managed to wreck one or the other of their 911s.
Maybe Porsches are just pulling crap drivers obviously afraid of proper sports cars.
Long may it last.
biggrin
Ha, I'd always equated 'real' sportscar drivers as owners of small, boutique, huge power to weight producers... or Porsche: the mentalist enthusiasm for speed, in the face of certain death inducing lift-off oversteer, always had me in awe. (Had me sideways on a few greasy roundabouts too).

ADDLED

145 posts

203 months

Sunday 17th September 2017
quotequote all
Fish said:
I have done a genuine 11.98sec 1/4 mile in a standard Tusvan gen 1 at Santa pod back in the day. ..they were a quick car. ..
Almost as quick as my 1.3 Corsa

skyrover

12,674 posts

205 months

Sunday 17th September 2017
quotequote all
ADDLED said:
Fish said:
I have done a genuine 11.98sec 1/4 mile in a standard Tusvan gen 1 at Santa pod back in the day. ..they were a quick car. ..
Almost as quick as my 1.3 Corsa

Fish

3,976 posts

283 months

Tuesday 19th September 2017
quotequote all

Fish

3,976 posts

283 months

Tuesday 19th September 2017
quotequote all
skyrover said:
ADDLED said:
Fish said:
I have done a genuine 11.98sec 1/4 mile in a standard Tusvan gen 1 at Santa pod back in the day. ..they were a quick car. ..
Almost as quick as my 1.3 Corsa
I do have the slip somewhere...

varsas

4,013 posts

203 months

Tuesday 19th September 2017
quotequote all
StottyGTR said:
TA14 said:
StottyGTR said:
Don't know if I need a parrot here or not but that's because weight doesn't influence top speed, except from a negligible increase in rolling resistance.
Weight doesn't even increase rolling resistance for top speed. Without aerodynamic aids uplift is greater than weight so weight won't add any rolling resistance.
So if I top out a 1500kg car, then put a 500kg weight inside and do the same again, you're telling me the rolling resistance will be identical?
Just to put some numbers on rolling resistance, as explained in this video:

https://www.youtube.com/watch?v=F76-npz0CeI

A Bugatti Chiron at 300mph would only need 50bhp to overcome rolling resistance, so a car weighing 3/4 the amount and going 2/3 the speed will only need...what 25ish bhp.


TA14

12,722 posts

259 months

Tuesday 19th September 2017
quotequote all
varsas said:
Just to put some numbers on rolling resistance, as explained in this video:

https://www.youtube.com/watch?v=F76-npz0CeI

A Bugatti Chiron at 300mph would only need 50bhp to overcome rolling resistance, so a car weighing 3/4 the amount and going 2/3 the speed will only need...what 25ish bhp.
He's tried to oversimplify there and made some mistakes. Net weight rather than gross weight and esp only putting in weight rather than the normal force that the equation demands so the real force cold come down to about 10bhp. For 2/3 the speed it would be about half the value due to V*V in the formula.

anonymous-user

55 months

Tuesday 19th September 2017
quotequote all
ADDLED said:
At £90k i assume it comes with its own tow truck: 1) to drag you home when it breaks down. 2) to drag you to hospital when youve exceeded 50mph and it buried you in a ditch.
A bitter (goes to check) yep, 911 owner biggrin




DonkeyApple

55,378 posts

170 months

Tuesday 19th September 2017
quotequote all
yonex said:
A bitter (goes to check) yep, 911 owner biggrin
You just knew didn't you? I don't what it is about that marque but it seems to attract some seriously insecure blokes. Do you remember the shmuck who wouldn't allow people to talk to him unless their car was worth over a certain value? rofl or the weirdo obsessed with shouting about some old Rolex?

Real driver

46 posts

207 months

Tuesday 19th September 2017
quotequote all
I've been following this thread for a while and like quite a few people was a bit disappointed when I saw the first pics. Those pics were crap.

The car actually looks really good once you've soaked in the fact that this is NEW TVR. It isn't a Peter Wheeler era car, but it still captures the essence of the Brand. From the off, it seems like it has first class engineering and is well put together. Look how low that bonnet line is!

I think that people have to remember that although the S series, Griffith and Chimera allowed TVR to thrive, the later models probably killed the brand. It just wasn't possible to make such bespoke cars for that price. I've always thought that Smolensky was short changed by Wheeler, the company was dying and there was no way Smolensky could have brought it back. The fact that he was a young Russian kid did him no favours either.

Putting looks to the side for a moment, where can you get a 1250kg, normally aspirated 500bhp, manual, RWD car that can actually be used on the road? we aren't even talking about price. The closest you can get to that is a Lotus GT430, and that's more expensive and less powerfull. Anything else is between 200 and 500kg heavier.

The interior design isn't incredible, but again looks well put together and probably won't fall apart every time you take the car out. The only thing that really grates (REALLY, as in TVR, you should change them) on a 90'000 £ car would be the air vents.

I don't like the wheels either, but hey presto, they put other ones on the car when they actually had to drive it on the road (my advice would be to at least propose these "new" wheels as an option).





If I was in the market for a 100K to 200K supercar, I would get this, without hesitation.