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Has anyone used a Dragy to measure the accuracy of the onboard 0-60 counter? Not really concerned with 1/4 or 1/8th mile accuracy, just the 0-60 alone to see if what the car says it hits is actually real.
Not the answer you want.....but in most cases the draggy is going to deliver a slower time which probably is actual. I have not seen not one draggy calculate a quicker time than the on board timer. If anything there is a one to two tenths difference either way. Maybe other members could chime in.
I believe the on board timer accounts for, or attempts to account for, 1 ft rollout. This would put the timer in line with the standard way 0-60 times are recorded and results in a slightly lower reading than a measurement device that doesn’t account for this.
Regardless, the onboard timer is something we all have readily available to us and is a great comparison tool to be used on this forum. No two tools are going to read exact when there are so many variables in play.
.but in most cases the draggy is going to deliver a slower time which probably is actual.
This is what I'm trying to get an indication of. I want to know if the on board 0-60 timer is showing a faster than actual time. If Dragy is more accurate than the on board timer then I want to see a comparison of just how off the on board timer really is (in whichever direction, faster or slower).
Fact is, the on board timer recordings to 60 mph has been documented many times to be a tenth or two quicker than actual clockings. 2.8 to 3.0 seconds to 60 MPH is a realistic expectation under perfect conditions.
Thx bvrhdr!!!!! So nice to see someone on here knows what the hell there talking about!!! It gets soo comical when guys post “got a worlds best 0-60 today” 2.7 lmao. Halarious. Thanks for being true!!!
If the dragy calculates for the 1 foot rollout and the car timer still undercuts the dragy, the corvette timer is way off. Maybe the Corvette timer doubles up on the 1ft rollout calculation.
Yes when comparing the 1 ft rollouts its off by about.2 less but it is what it is. Its a 5hz logger in the c8 which isnt accurate enough.
I by no means am saying someone cant get a 2.7 to 60 with drag slicks or perfect prep on great conditions. Its just the pdr isn't going to be the telemetry that will accurately show it.
I took my C8 HTC Z51 out today and got one run in with my Dragy.
Not ideal as my tires when I left the house this morning were at 30lbs, but after work at 3pm in 60 degree weather were at 35lbs.
I had 3/4 tank of fuel.
Put car in track mode and hit tc off 2x and used launch control at 3500rpms.
The summer tires spun badly as evidenced by a 1.95 60' time
0-60 was 3.35 (1 foot rollout)
The Dragy was a valid run, but was at a 2 percent incline, not great for best times.
My other run was downhill at 1.2% and was invalid, it was a 3.32 0-60 and 1.94 60'.
I believe with 1/2 tank of fuel, tires at 30lbs and a warmer day, I could get 1.8 60' and 3.0-3.1 0-60.
My bone stock 2015 Porsche 911 Turbo S cabriolet did a 1.63 60' and a 2.73 0-60.
Mildly Modded it does a 1.61 60' and a 2.59 0-60 in worse conditions.
Did a little better today, aired tires down to 32lbs and 63 degrees outside, 1/2 tank of fuel.
Did a 3.27 and a 1.94 60' time.
I definitely need to air down more to 30lbs as the car is still spinning badly.
Did a little better today, aired tires down to 32lbs and 63 degrees outside, 1/2 tank of fuel.
Did a 3.27 and a 1.94 60' time.
I definitely need to air down more to 30lbs as the car is still spinning badly.
I don't want to air lower than 30 on a warm tire, but I know it would yield better times.
I like how the car feels during normal driving with 30lbs in each tire.
I don't want to air lower than 30 on a warm tire, but I know it would yield better times.
I like how the car feels during normal driving with 30lbs in each tire.
Just go home and air up after you do your 0-60 dragy passes. Being the tires are run flats that are made to run on with no air, I do not think you will feel a lower than posted tire pressure by only 5 psi in the rear. The door jamb tire pressure decal is 30psi all the way around, I have driven my C8 with 25 psi cold rear tires for 5200 miles, when taking it down the 1/4 mile the tire pressure will be 25psi hot for max out of the hole grip.
Just go home and air up after you do your 0-60 dragy passes. Being the tires are run flats that are made to run on with no air, I do not think you will feel a lower than posted tire pressure by only 5 psi in the rear. The door jamb tire pressure decal is 30psi all the way around, I have driven my C8 with 25 psi cold rear tires for 5200 miles, when taking it down the 1/4 mile the tire pressure will be 25psi hot for max out of the hole grip.
Probably safer to run lower pressure than to wheel hop.
I did a couple of runs today, 32lbs of pressure in each tire, in between 1/4-1/2 tank, 63 degrees outside. Got a 0-60 of 3.28 both times, still spinning a bit, the 60' time was a 1.95 both times also. These summer tires need warmer temps to get sticky. They are still too hard to hook.
I did a couple of runs today, 32lbs of pressure in each tire, in between 1/4-1/2 tank, 63 degrees outside. Got a 0-60 of 3.28 both times, still spinning a bit, the 60' time was a 1.95 both times also. These summer tires need warmer temps to get sticky. They are still too hard to hook.
Just take an electric compressor with you.
Air down to 26psi.
Do a HARD brake from 100mph to your launch spot.
Then pull both paddles and rev to 6000rpm and release the paddles. Burn out.
Then stop the car and do your launch.
The street tires will still be terrible compared to drag slicks but that is your best bet at getting a good lunch on the ps4s
0-60 and Dragy
