lance camper porpoising and tires cupping
I have a lance squire lite extended cabover on a 2003 ford F250 SuperDuty, 4x4 Short Bed, Crew Cab. i replaced the shocks when i got the camper with rancho 9000 XL adjustable shocks. I am not sure the...
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I have found the whole porpoising issue to be hard to pin down with comments in various forums across the web. I have a Hallmark popup in an F350 long bed. If I drive 35W out of Minnesota heading south I have no issue at all. As I progress on 35W into Iowa I would swear I have switched to a speedboat crashing through waves there is so much porpoising. If you watch the back end of the camper and truck, it looks like it is jackhammering down the road.
After we are further south, all is well again. It is the same thing with towables, but on different stretches of Interstates, some of which seem to be pretty well known, thus my earlier comment about making sure it is not the road. Here in Tennessee on I81 just outside of Bristol heading towards Knoxsville we have a few miles of Interstate where there is so much vibration you would swear your tires have just gone out of balance. Drive a few more miles and by the time you are to the Johnson City exits, everything is smooth.
My thought is that as the quality of our roadways have deteriorated, harmonics play games with our trucks' suspension. I don't think it is one particular brand or even camper/truck match up.
I did install Sumo springs and Fox shocks and those changes did reduce, but not eliminate the issue.
Just my two cents. :)
After we are further south, all is well again. It is the same thing with towables, but on different stretches of Interstates, some of which seem to be pretty well known, thus my earlier comment about making sure it is not the road. Here in Tennessee on I81 just outside of Bristol heading towards Knoxsville we have a few miles of Interstate where there is so much vibration you would swear your tires have just gone out of balance. Drive a few more miles and by the time you are to the Johnson City exits, everything is smooth.
My thought is that as the quality of our roadways have deteriorated, harmonics play games with our trucks' suspension. I don't think it is one particular brand or even camper/truck match up.
I did install Sumo springs and Fox shocks and those changes did reduce, but not eliminate the issue.
Just my two cents. :)
