LFA "Videos" thread
Lexus Champion
Joined: Oct 2005
Posts: 10,351
Likes: 2,745
From: Calgary, AB
Exactly. I found a few people in M3 claiming they broke 200 mph, but their speedos were so innaccurate that their actual speed turned out to be only 184 - 187 mph in reality.
I could have sworn I read somewhere Lexus LFA's speedo reads information from a satellite, but I could be wrong.
I could have sworn I read somewhere Lexus LFA's speedo reads information from a satellite, but I could be wrong.
I also agree that satellite telemetry should be more accurate. GPS itself is not very accurate (at least not consumer-level GPS) but scientifically it makes sense that the difference in positions when taken sequentially can be accurate despsite any positional lack of accuracy, and this is what makes the telemetry accurate.
The other (and bigger reason) is that car manufacturers consistently understate speed at the speedometer. Using various satellite-based telemetry recorders I've found Japanese cars tend to be about 1-2mph at the speedo at highway speeds, including my IS F. German cars are notorious for overstating speed; I've read this is due to EU regulations that penalize for inaccurate understating (but not overstating) of speed resulting in many European manufacturers making sure they have a wide buffer on the over. My friend found his 335i to be a shocking 3-4mph overstated at highway speeds, i.e., his speedo would read 63-64 when in fact only going 60. Many of the users at some of our neighbor BMW forums complain about this a lot.
The other (and bigger reason) is that car manufacturers consistently understate speed at the speedometer. Using various satellite-based telemetry recorders I've found Japanese cars tend to be about 1-2mph at the speedo at highway speeds, including my IS F. German cars are notorious for overstating speed; I've read this is due to EU regulations that penalize for inaccurate understating (but not overstating) of speed resulting in many European manufacturers making sure they have a wide buffer on the over. My friend found his 335i to be a shocking 3-4mph overstated at highway speeds, i.e., his speedo would read 63-64 when in fact only going 60. Many of the users at some of our neighbor BMW forums complain about this a lot.
Lexus Champion
Joined: Apr 2010
Posts: 2,266
Likes: 2
From: Washington
The vbox data isn't a shot-for-shot of the LFA's speedo/tach. It's just made to look like the LFA's. On battle of the supercars, Tanner Foust said that the speedo of the LFA was basically spot on. They use Vbox on that show don't they?
Lexus Champion
Joined: Oct 2005
Posts: 10,351
Likes: 2,745
From: Calgary, AB
The rpm changes are in sync with how the car is being shifted as well as how engine speed is changing. It is actually how video VBOX functions/marketing features where it integrates video from mounted camera with real-time satellite telemetry data in one screen.
Last edited by 05RollaXRS; Mar 28, 2011 at 05:10 PM.
Lexus Champion
Joined: Apr 2010
Posts: 2,266
Likes: 2
From: Washington
Still doesn't explain why he reads off 153mph and the VBOX says 147mph max. Considering he was looking down at the speedo, it may have traveled faster than that, but I think he was being honest. So the 6+mph gap comes from where? I don't think the LFA's speedo is that optimistic, is it?
Lexus Champion
Joined: Oct 2005
Posts: 10,351
Likes: 2,745
From: Calgary, AB
Still doesn't explain why he reads off 153mph and the VBOX says 147mph max. Considering he was looking down at the speedo, it may have traveled faster than that, but I think he was being honest. So the 6+mph gap comes from where? I don't think the LFA's speedo is that optimistic, is it?
VBOX tells the actual speed that the satellite data reveals. The 6 mph difference you are seeing here is very typical and within the maximum tolerance of a speedo.
"Vehicle manufacturers usually calibrate speedometers to read high by an amount equal to the average error, to ensure that their speedometers never indicate a lower speed than the actual speed of the vehicle, to ensure they are not liable for drivers violating speed limits."
Last edited by 05RollaXRS; Mar 28, 2011 at 07:57 PM.
Lexus Champion
Joined: Apr 2010
Posts: 2,266
Likes: 2
From: Washington
http://www.youtube.com/watch?v=dbQg4eixNVE
nice color combo on this car. blue brakes, blue paint, dark wheels.
heres another one, scott pruett in the black production unit
http://www.youtube.com/watch?v=UTHODQeZTzU
nice color combo on this car. blue brakes, blue paint, dark wheels.
heres another one, scott pruett in the black production unit
http://www.youtube.com/watch?v=UTHODQeZTzU
Last edited by TF109B; Mar 30, 2011 at 01:14 PM.
Lexus Fanatic
iTrader: (10)
Joined: Nov 2004
Posts: 13,441
Likes: 1,076
From: Under an IS F since 2008
Anyone have info regarding the Badge Number on this White LFA that showed up in Florida around the week of 3-14 to 3-19
JM Lexus in Florida
http://www.youtube.com/watch?v=ApKW6FGsUo8
Also, anyone have any info regarding the Badge Number on this Red LFA that showed up in So Cal this week .
Lexus of Westminster - So Cal
http://www.youtube.com/watch?v=sK2bm_hnz7g
Regards,
Joe Z
JM Lexus in Florida
http://www.youtube.com/watch?v=ApKW6FGsUo8
Also, anyone have any info regarding the Badge Number on this Red LFA that showed up in So Cal this week .
Lexus of Westminster - So Cal
http://www.youtube.com/watch?v=sK2bm_hnz7g
Regards,
Joe Z
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Lexus Test Driver
Joined: Nov 2007
Posts: 5,285
Likes: 43
From: NV
I posted this in the thread with the pictures of the 2011 VLN1 car, but figured I'd repost the video here just because there's some quality footage of the LFA (watch it in HD):
http://www.youtube.com/watch?v=QM9I4OHWJjk&hd=1
There are long sequences of the LFA at 1:31, 4:08, and 6:02; brief appearances at 0:33, 4:56, 6:52, and 11:12.
http://www.youtube.com/watch?v=QM9I4OHWJjk&hd=1
There are long sequences of the LFA at 1:31, 4:08, and 6:02; brief appearances at 0:33, 4:56, 6:52, and 11:12.
Lexus Test Driver
Joined: Nov 2007
Posts: 5,285
Likes: 43
From: NV
More great footage from VLN1, including some good front shots of the LFA:
http://www.youtube.com/watch?v=PeAdulLoejg&hd=1
http://www.youtube.com/watch?v=PeAdulLoejg&hd=1
Pole Position
Joined: Oct 2008
Posts: 399
Likes: 0
From: Los Angeles, CA
Official video of the LFA at Infineon Speedway. I like the thermal imaging shots showing the heat from the radiators and brakes.
http://www.youtube.com/watch?v=S1pI7_E6tqQ
http://www.youtube.com/watch?v=S1pI7_E6tqQ
Lexus Champion
Joined: Apr 2010
Posts: 2,266
Likes: 2
From: Washington
Driver School Candidate
Joined: Mar 2010
Posts: 38
Likes: 0
From: CA
Lexus Champion
Joined: Apr 2010
Posts: 2,266
Likes: 2
From: Washington
That's my point, even though it was held up by some of the 'track trucks' and the camry, the thing took off. That camry was pretty quick as well.
http://www.youtube.com/watch?v=3bwYkkSJiv0
Scott Pruett- "9500"
http://www.youtube.com/watch?v=3bwYkkSJiv0
Scott Pruett- "9500"
Last edited by TF109B; Apr 16, 2011 at 02:49 PM.