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#1
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Moving car ramp???
This has bugged the crap out of me for years. I've seen it in action movies every so often and now it's on the latest Chevy commercial - where you have a flatbed truck or car carrier rolling down the highway at high speed with a ramp hanging off the back of it almost touching the road. Then someone comes up and drives a car onto the truck. I know it looks cool and all but is it really possible to do it that smoothly? I mean, you have wheels rotating at highway speeds hitting a ramp that in relative terms is unmoving. Not only that, but in the case of an AWD vehicle - would the sudden huge change between the front and rear wheels as the car mounted the ramp cause some freaky things to occur to the drivetrain?
Just wondering
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Jerry 2005 Baja Turbo 2008 Ford Crown Victoria Police Interceptor jnj7707@yahoo.com |
#2
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I believe the center diff would get fragged in an instant.
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Matt Locker Link 2015 BRZ Limited 6MT 92 Ebony LS-L ECUtune Stage2av1, Z32 MAF, 370cc injectors, TomsSVX intake, BontragerWorks 22mm RSB #003, HID Hi and Lo beams, OT endlink and bushing mods, PWR Aluminum radiator, Harvey's QC shift kit, 2.5" flowmaster 80 exhaust, 17" Michelin Pilot Sport A/S, Poly sway bar bushings, Slotted Bradi rotors, AFBeefcake powdercoated calipers, 97 grill, and a huge set of air horns. 300,000 miles and counting 92 Ebony LS-L. ecutune stage1v4, motorsport 1pc pulley. Garage Queen - sold to Dad in upstate NY 155,000 miles 19 Subaru Ascent Premium - -Hers !. 89 DL 4x4 little red wagon - a.k.a. The immortal suby. 275k R.I.P. |
#3
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..i think ANYTHING would be possible in a new 'vette
drooooooool -adam |
#4
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Hmmm...good question...let me think. It would cause a problem with AWD vehicle as you surmised.
A regular vehicle (RWD) would be simple to do since as you drive onto it you are pushing the front end on without varying the speed of the drive wheels. As soon as you hit the ramp you could just let off the clutch and coast up the ramp (if you had enough acceleration in relation to the moving ramp) then shift into first and pull up[ the ramp as if starting on a hill. Or you could just hit the brakes without hardly a lurch as you will be shedding off almost no speed except for the rotational force of the wheels themselves. A FWD vehicle would be a bit trickier to do smoothly and would take a skillfull driver to pull off nicely. You'd have to hit the ramp with a little speed in relation to the ramp and let off the clutch just as you hit it, letting the momentum carry you up the ramp long enough for you to shift into first, allow the revs to bleed off, then simply drive up the ramp in first as if you were starting on a hill. I think it could be done nicely on a RWD or FWD vehicle. An AWD would have it's center clutch reeked havoc upon due to the rotational speed differences with the axles. The thing to remember is that the speed differential is not really all as great as your subconcious tells you it is. It's not like doing 60mph then having to stop instanly or shoot off the front of the car carrier. The car and moving ramp are moving at nearly the same speed so there is no real shock of speed differential when you hit the ramp. The only thing that has to stop quickly is the rotational momentum of the wheels and since they weigh considerably less than the overall mass of the car itself, you would barely feel it's effects. Sure would love to get a chance to try it out one day...With someone else's car of course. -Johnny (Fast and Irritable)
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Pearl '92 LS-L 179K (Historic 1st 5-speed SVX) Mods: 5-speed, 4.11's, Group-N motor mounts, dual Magnaflows, cone air filter, Kenwood MP-228 CD/Receiver, white-faced gauges, '97 grill, custom window tinting. Ebony Mica '92 LS 80K Oct 2002 - Dec 2004: Victim of theft. She served me well. You can tell the lack of craftsmanship by the wrinkles in the duct tape. Last edited by CigarJohnny; 01-11-2004 at 09:09 AM. |
#5
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Quote:
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Pearl '92 LS-L 179K (Historic 1st 5-speed SVX) Mods: 5-speed, 4.11's, Group-N motor mounts, dual Magnaflows, cone air filter, Kenwood MP-228 CD/Receiver, white-faced gauges, '97 grill, custom window tinting. Ebony Mica '92 LS 80K Oct 2002 - Dec 2004: Victim of theft. She served me well. You can tell the lack of craftsmanship by the wrinkles in the duct tape. |
#6
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I saw one of those 'How-it-was-Done' programmes about the Italian Job. (Original.)
The out-takes were shown and it was filmed for real, not faked. It just took a number of attempts and a few soiled pants. Being minis and FWD, it was just as described by Johnny.
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Andy ------------------------------------------------------------------------------------ If I would be a young man again and had to decide how to make my living, I would not try to become a scientist or scholar or teacher. I would rather choose to be a plumber or a peddler in the hope to find that modest degree of independence still available under present circumstances. -- Albert Einstein, The Reporter, November 18 1954 |
#7
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Maybe you need a smart car. "Super-persut mode KITT!"
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