Big tires and the supercharger acts as a big engine brake at high RPMs in addition to the pig iron pistons going up and down in the Viper V10.
But that isn't really drivetrain loss, is it? I always thought drivetrain loss was the parasitic loss from the flywheel to the road. If the motor is rated at 505 hp at the flywheel, that is net of the power-sapping supercharger and pig iron pistons.
The tires are another thing. But they were both probably on 19 inch wheels. That's probably a wash.
__________________
05 E55 - Brilliant Silver/Charcoal; Best e.t. 11.775 @ 118.69 mph, 1.710 60' - BONE STOCK on PS2's http://www.dragtimes.com/2005-Merced...ecs-11697.html;
07 GL450 - Iridium Silver/Charcoal
07 Jeep Grand Cherokee Laredo - Silver/Gray
But that isn't really drivetrain loss, is it? I always thought drivetrain loss was the parasitic loss from the flywheel to the road. If the motor is rated at 505 hp at the flywheel, that is net of the power-sapping supercharger and pig iron pistons.
The tires are another thing. But they were both probably on 19 inch wheels. That's probably a wash.
Yes you are correct of course the pistons / SC are not considered the classic drivetrain but BMW is blazing a path on reducing engine parasitic losses so it can actually deliver more power to the tranny.
Looking at the dyno charts doesn't indicate how quickly an engine can rev. Lower parasitic losses and less rotating mass, allows BMW to spin up the powerband much easier....this is lost on the Dyno police.
DOn't underestimate the effect of tires and wheels.
__________________
"Aerodynamics are for people who cannot build engines"...... Enzo Ferrari
The M5 beats the Viper in this race and it's only to a little over 110 mph. We were racing up to nearly 180 mph. Given more distance on the above race, the gap the M5 made on the Viper would be much larger--at least it seems like it to me. This video is more ammunition that the Viper is OK down at low speeds, but quickly has problems as drag becomes a factor.
the viper won according to the video that i just watched from mr. vroom.
both cars in his video ran low 12's. put either one of those cars up against a 10 second car and they're over 10 car lengths back by the end of the 1/4mile or 135mph mark. so you tell me how a slightly modified m6 possibly capable of a sub 12 second run can keep up with a 10 second viper up to 120 then walk all over it after that? whether it be mechanical problems, driver error, or someone flat out lying about what their viper can actually do we don't know. either way there's a side to this story that isn't being told...a side that data logging info would quickly reveal.
I've had nothing to do with these race videos - I only attended the day as an independent observer. I agree for next time it would be very interesting to see if it's possible to gather acceleration data at the same time as the videos.
What is very tiring is the people who are insecure enough to post here and intimate that the videos are supposedly rigged. That's sad considering that they weren't at the event and don't take the effort to actually organise something similar themselves. It's so incredibly cheap to make comments about an event where all the drivers got along really well and where everyone was just interested in having fun with some very cool cars.
Sorry I thought you had to do with organization of the event.
How could the videos be rigged when all the drivers can see them and are on these boards, they all decide who wants to be the victim? Nonsense.
I saw some datalogged data posted earlier, it would have been interesting to have some real numbers to compare.
Lascases I would guess it would be close to that, but I was looking for some tested and recorded data. I guess it will not happen, thank you all.
I think this event was fantastic and I can only hope participation grows to add some of the VMAX runners and others from overseas. Good job.
you tell me how a slightly modified m6 possibly capable of a sub 12 second run can keep up with a 10 second viper up to 120 then walk all over it after that? whether it be mechanical problems, driver error, or someone flat out lying about what their viper can actually do we don't know. either way there's a side to this story that isn't being told...a side that data logging info would quickly reveal.
It's a conspiracy...
__________________
"Quitters never win, winners never quit. But those who never win and never quit are idiots."
2008 BMW Z4M Coupe
2007 BMW M6 Coupe--SOLD!
2004 VW Passat W8 4Motion
1993 BMW 318i
2010 335d--on order
what you claiming the viper won in vrooms video...or is this just your way of avoiding logical conclusion about the airstrip run that you don't want to account for. i'm not saying the viper didn't lose, i'm just wanting to know why. there's missing info and i'd like to see it.
what you claiming the viper won in vrooms video...or is this just your way of avoiding logical conclusion about the airstrip run that you don't want to account for. i'm not saying the viper didn't lose, i'm just wanting to know why. there's missing info and i'd like to see it.
I can't see the results of the race because of a pole in the way. It seems apparent that the Viper had better acceleration at launch, but the M5 pulled it in rather quickly.
As far as I know none of the owners outside of the Ruf RT12 (damaged right rear tire) and the Supra (ignition issues) reported any faults with their cars. For whatever reason it is always feasible that there might be some small issues with other cars but the owners certainly never mentioned them up to now.
It would be interesting to have the Viper owner post here about the exact specifications of his car and if there were any known faults with the car on the day.
I can't see the results of the race because of a pole in the way. It seems apparent that the Viper had better acceleration at launch, but the M5 pulled it in rather quickly.
What is not listed here is the Cda. You're going to have to Google for that yourself as well as the numbers for an SRT-10 Viper.
IIRC the M5 won that drag race by the hair of his chinny chin chin. At least that's what he said when I asked him.. As far as the Viper goes , If that Viper is setup with the same Paxton supercharger kit (which by the pix of the engine bay showed the exact same parts to me ) that kit gave the car 647 hp /605 lb ft at the wheels. So the car has power but traction is an issue when shifting even at 100mph. Just my 2 cents
![Supercar Shootout in Sweden II: [Update:High Defintition Download]](http://www.m5board.com/vbulletin/iconimages/e60-m5-e61-m5-touring-discussion/supercar-shootout-sweden-ii-update-high-defintition-download_ltr.gif)
the viper won according to the video that i just watched from mr. vroom.
Nonsense.
Linear Mode
