Big truck passing
I done several searches on the following topic but could not find anything on it. I am usually driving in the right lane on the interstate or a four lane road. When a big truck passes an the left as i...
Forum Discussion
The air coming off the passing vehicle adds new side forces to the vehicle being passed.
In a one unit RV such as a motorhome, it is mainly pushing toward the right. As you watch the mirrors just as the truck gets even with your back bumper, hold the wheel and be prepared for a very small correction to counteract that force.
In a two unit RV such as a 5er or TT, that unit is pushed toward the right also. The pivot point of the unit - the hitch, is pushed toward the left. RV combos with the hitch mounted over the real axle have the least movement because the angle of the push is minimal. Rigs like my truck can get a substantial push toward the left.
I have to be prepare when being passed to turn toward the right a little.
The number of things which can affect the force are huge. Basically a lot to do with aerodynamics, speed differential, and speed of the vehicle being passed.
RVs are NOT aerodynamic, and the faster they go, the more they are subject to forces exerted upon the RV. As mentioned above, a movement at 70 will feel massive, at 60 much less. In MOST cases.
Every passing is a bit different, and it takes miles of driving to understand your vehicle's sweet spot.
In a one unit RV such as a motorhome, it is mainly pushing toward the right. As you watch the mirrors just as the truck gets even with your back bumper, hold the wheel and be prepared for a very small correction to counteract that force.
In a two unit RV such as a 5er or TT, that unit is pushed toward the right also. The pivot point of the unit - the hitch, is pushed toward the left. RV combos with the hitch mounted over the real axle have the least movement because the angle of the push is minimal. Rigs like my truck can get a substantial push toward the left.
I have to be prepare when being passed to turn toward the right a little.
The number of things which can affect the force are huge. Basically a lot to do with aerodynamics, speed differential, and speed of the vehicle being passed.
RVs are NOT aerodynamic, and the faster they go, the more they are subject to forces exerted upon the RV. As mentioned above, a movement at 70 will feel massive, at 60 much less. In MOST cases.
Every passing is a bit different, and it takes miles of driving to understand your vehicle's sweet spot.
