Trailer and truck bounce
I have a new Cherokee Alpha Wolf 23RD-L. Towing it with 2005 Ford F150. I have a Husky Center Line towing system. When driving on concrete and hit about 60 MPH the trailer and truck start bouncing r...
Forum Discussion
Harmonics and because the wheel base. Spacing if the pavement joints, your suspension compression, tire PSI, shocks (they also have a natural harmonic), speed, etc all lined up
Once that harmonic synchronization happens...the amplitude will go ever higher if dwelled there
Speed up or slow down are the only things a driver can do
Back home...changing tire PSI, increase/decrease WD spring rates, etc in order to change the setups harmonic point(s)
Stiffening everything moves the harmonic frequency higher
If the designers of roads and highways would change the spacing of those joinys... that would also help because there wouldn't be a constant frequency...
It would not be at ONE frequency
An example...ho to a softly sprung truck, with ride quality tire PSI
Push the TV sideways with your foot on the bumper
As it comes back over center...push it again and again
Notice how it will naturally continue with LESS push from you. Just time it to that harmonic
Then air up the tires to max PSI...and repeat
It will be at a higher frequency and you won't be able to get it moving as far side to side
Once that harmonic synchronization happens...the amplitude will go ever higher if dwelled there
Speed up or slow down are the only things a driver can do
Back home...changing tire PSI, increase/decrease WD spring rates, etc in order to change the setups harmonic point(s)
Stiffening everything moves the harmonic frequency higher
If the designers of roads and highways would change the spacing of those joinys... that would also help because there wouldn't be a constant frequency...
It would not be at ONE frequency
An example...ho to a softly sprung truck, with ride quality tire PSI
Push the TV sideways with your foot on the bumper
As it comes back over center...push it again and again
Notice how it will naturally continue with LESS push from you. Just time it to that harmonic
Then air up the tires to max PSI...and repeat
It will be at a higher frequency and you won't be able to get it moving as far side to side
