Forum Discussion
Cloud_Dancer
Jun 24, 2015Explorer II
Mine will do the higher speeds, and I've driven it up there. It handles good, except that I much prefer to deal with a blown front tire at a lower speed. The lower cruising speeds of 65 to 67 mph makes more sense, specially in the context of this thread's subject matter.
Back to the accident scenario:
Immediately after the tire started losing air pressure (the blowout), the right front tire became the main tire which had steering authority. And, this tire was 10 to 11 ft from the edge of the pavement when the blowout occurred. This means that the driver had that much lateral distance in which he could've turned to the right in order to take advantage of THIS very important steering authority. ALSO, he apparently was not aware that if he had turned the steering wheel, PLUS stepped on the accelerator, he could've realized more forward thrust out of the left drive tires than the right drive tires. AND THIS would've additionally countered the adverse yaw to the left. In other words, just these two steps would've resulted in gaining directional control of the motorhome.
A bit of knowledge in the subject of automotive chassis dynamics is what you need in order to understand the reason for the resulting advantageous differential thrust between the left and the right drive tires. But, it's the reason that the instructor in the Michelin video wants you to step on the accelerator immediately upon experiencing a front tire blowout.
Yep, it's that easy to maintain directional control,.....two simple steps (which must be executed immediately).
BTW when I say that the right front tire is the steering tire that has steering authority, this means it has sufficient traction to respond to steering wheel inputs. Obviously, this means that in order to take advantage of its steering authority the driver will need to turn the steering wheel (in this case, to the right).
Back to the accident scenario:
Immediately after the tire started losing air pressure (the blowout), the right front tire became the main tire which had steering authority. And, this tire was 10 to 11 ft from the edge of the pavement when the blowout occurred. This means that the driver had that much lateral distance in which he could've turned to the right in order to take advantage of THIS very important steering authority. ALSO, he apparently was not aware that if he had turned the steering wheel, PLUS stepped on the accelerator, he could've realized more forward thrust out of the left drive tires than the right drive tires. AND THIS would've additionally countered the adverse yaw to the left. In other words, just these two steps would've resulted in gaining directional control of the motorhome.
A bit of knowledge in the subject of automotive chassis dynamics is what you need in order to understand the reason for the resulting advantageous differential thrust between the left and the right drive tires. But, it's the reason that the instructor in the Michelin video wants you to step on the accelerator immediately upon experiencing a front tire blowout.
Yep, it's that easy to maintain directional control,.....two simple steps (which must be executed immediately).
BTW when I say that the right front tire is the steering tire that has steering authority, this means it has sufficient traction to respond to steering wheel inputs. Obviously, this means that in order to take advantage of its steering authority the driver will need to turn the steering wheel (in this case, to the right).
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