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Been to the stampede numerous times, and are currently camping about three miles from there (Riverbend Campground). Will be here through Sunday and then back home to Swee****er.
My 2014 EcoBoost with a 3.55 averaged about 8.5 mpg today running at 55mph into a 15 mph headwind. I stayed in T/H mode the entire 80 mile trip in flat South Florida. The truck was very reluctant to shift from 4th into 5th. When running in 4th it would tach at 2200 rpm with 0 pounds of boost. In 5th gear it would tach at 1800 rpm with 5 lbs of boost. I hope to catch a tail wind on the way home and see some nice double digit numbers!
I kept my tow/haul button on, kept it around 70, and had the tuner set to 91 tow. I towed a 2014 impala from mi to vegas and average 12.5mpg. It was on an open trailer I'd say the total weight was around 5200/5600
Well....most are. That is a Tire and Rim Association standard spec for ST trailer tires.
Butt....take a look at the Goodyear bulletin in the link below. It explains that if you want to run their Marathon ST tires up to 75mph, just pump the pressure up by an additional 10 psi. The Goodyears are built strong enough to safely exceed that 65mph rating.
Another consideration is that the energy to be dissipated by the brakes during a stop is proportional to the square of the speed.
The kinetic energy of a non-rotating object of mass m traveling at a speed v is 1/2 mv^2
So the relative energy to be dissipated at 75 mph vs 65 mph is (75/65)^2 = 1.33
75 mph vs 55 mph is (75/55)^2 = 1.86
I'm usually towing at 55 mph. Please don't run over me.
Another consideration is that the energy to be dissipated by the brakes during a stop is proportional to the square of the speed.
So the relative energy to be dissipated at 75 mph vs 65 mph is (75/65)^2 = 1.33
75 mph vs 55 mph is (75/55)^2 = 1.86
I'm usually towing at 55 mph. Please don't run over me.
As a former professor of aeronautical science, I'm intimately familiar with the physics relating to kinetic energy.
And I also am well aware what's going on with the carbon ceramic brakes on my track car. I'm very sensitive to the difference in where the brake zone begins when running the Rolex 24 course at Daytona and slowing from 180 on the tri-oval to about 60 for the turn into the infield, as opposed to doing only 155 up the back straight at VIR and braking down for T14 to set up for the Roller Coaster section.
I'll be running at Daytona next weekend - if you're in the area come on out and I'll run you around for a few laps. But, it sounds like you probably wouldn't want to do that.
As far as towing my car to events at other tracks, I find it much more comfortable to settle in with all the semis that are cruising along at the speed limit of 70 mph. It sounds like I definitely won't be running over you because I'll just be in the line of semis that are passing you by as you poke along 15 mph below the speed limit.
Thanks for all the advice, all valid points. I guess I'll have to get ready to do the right lane trailering blues.
Nothing wrong with the right lane!
I'm usually cruising there at 62 mph (100km/hr) and enjoying every minute of it.
Not being a race car driver like KR Kodi, I find high speed travel rather strenuous. I'm also cheap and like to save on gas, and am retired, so time isn't an issue.
As a former professor of aeronautical science, I'm intimately familiar with the physics relating to kinetic energy.
And I also am well aware what's going on with the carbon ceramic brakes on my track car. I'm very sensitive to the difference in where the brake zone begins when running the Rolex 24 course at Daytona and slowing from 180 on the tri-oval to about 60 for the turn into the infield, as opposed to doing only 155 up the back straight at VIR and braking down for T14 to set up for the Roller Coaster section.
I'll be running at Daytona next weekend - if you're in the area come on out and I'll run you around for a few laps. But, it sounds like you probably wouldn't want to do that.
As far as towing my car to events at other tracks, I find it much more comfortable to settle in with all the semis that are cruising along at the speed limit of 70 mph. It sounds like I definitely won't be running over you because I'll just be in the line of semis that are passing you by as you poke along 15 mph below the speed limit.
11-27-2014, 06:16 PM
