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Those chrome wheels would look much better if they were 24” with spinners.
Believe they were polished as opposed to chrome, but yeah not your average Senna. All four of those cars behind the velvet rope belong to one owner and all were highly customized. Clearly he can afford to do whatever he wants with his cars and I doubt he gives one iota about value....
Hey! Thought I would run into you there but have no idea what you look like, nobody knows you by screen name. They do know me by Scruffy. There was a Volcano Yellow car on a lift inside. My 570S. Exhaust tip retracted in at the track and scorched the body panel paint. Warranty.
Wife and I arrived around 11 and stayed to a bit over 12. I drove in with a Yellow GT4 and wifey drove in with a Black C2S with full RS aerokit, green wing tips. Yes, lots of cool stuff. I sat in that Senna. Very secure and not so easy for me to exit the car. But comfortable once in.
The active rear wing moves as the car was moved in the garage.
Originally Posted by Nizer
Some interesting hardware at McLaren Boston today. The Senna is certainly impressive and purposeful looking in the flesh, though still not particularly attractive. Not a shade of green I'd pick but it was translucent revealing the carbon fiber weave underneath so pretty trick looking.
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My yellow GT4 nose is in the vary right part of that shot.
*** or no ***, it is fuxing awesome. Allthough I wouldn't quite dare to go for that light colored interior myself !
What's more. I am contemplating another car next to my gt3. As a special occasion - weekend - holiday car, and with no track use intended for that one, Mclaren jumps in the picture again. How awesome would a 570GT look in that Fuxsia color combined with black alcantara interior !
This result must be due to the GT2RS not having active aero (can't reduce the drag of the large wing when going straight).
I'm pretty sure it is more to do with the 720 having over 700PS from 6500 to 8000rpm with a real peak of around 740PS, it simply has a lot more power under the curve during the drag race.
I'm pretty sure it is more to do with the 720 having over 700PS from 6500 to 8000rpm with a real peak of around 740PS, it simply has a lot more power under the curve during the drag race.
Drag is HUGE at these speeds. Just based on rough calculations:
720s @ 170 MPH will experience 6,457 Newtons of Force (0.26 Drag Coefficient)
GT2-RS @ 170 mph will experience 9,382 Newtons of Force (0.34 Drag Coefficient)
To put this in perspective let's compare power to weight ratios at 170 MPH between the two:
6,457 Newtons is ~1,451 pounds of force. So we add 1450 lbs to 2,800 lbs = 4,251 lbs or a power to weight ratio of (710 bhp) 5.92 lbs/BHP @ 170 MPH
9,382 Newtons is ~2,109 pounds of force. So we add 2,109 lbs to 3,241 lbs = 5.350 lbs or a power to weight ration of (690 bhp) 7.75 lbs/BHP @ 170 MPH
Again, HUGE power to weight difference. The BHP delta does very little @ 170 MPH vs. Drag forces.
Drag is HUGE at these speeds. Just based on rough calculations:
720s @ 170 MPH will experience 6,457 Newtons of Force (0.26 Drag Coefficient)
GT2-RS @ 170 mph will experience 9,382 Newtons of Force (0.34 Drag Coefficient)
To put this in perspective let's compare power to weight ratios at 170 MPH between the two:
6,457 Newtons is ~1,451 pounds of force. So we add 1450 lbs to 2,800 lbs = 4,251 lbs or a power to weight ratio of (710 bhp) 5.92 lbs/BHP @ 170 MPH
9,382 Newtons is ~2,109 pounds of force. So we add 2,109 lbs to 3,241 lbs = 5.350 lbs or a power to weight ration of (690 bhp) 7.75 lbs/BHP @ 170 MPH
Again, HUGE power to weight difference. The BHP delta does very little @ 170 MPH vs. Drag forces.
CdA should be used for this calculation, the GT2RS is at 0.75, where did you get the 720S Cd number (I have never seen it quoted) and do you know the frontal area ? with this info it is easy to calculate the relative drag numbers at any speed.
09-16-2018, 08:57 AM
