Quote:
Originally Posted by Vmax2007
Interesting theory, but I would have to think the Toyota Engineers would have considered this in their design analysis. It is more likely due to torsional flex in the frame and the resonance created from it. I truly believe you will see Toyota upgrade this "TripleTech" c-channel frame.
BTW, I too am a ME, but not in the Automotive industry. I am a Custom Machine Designer for factory automation. I design frames all the time and know what vibration can do. I have been doing this for nearly 20 years. But again, like you, not in the automotive industry, so my opinions are based on Engineering principles in general.
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Could be the frame for sure... where I work in the hated oil industry we fill our pump frames with resin to try to get the natural freq well out of the operating range.
Anywho, I still think the springs are acting like springs in the horizontal plane undamped and causing heartburn. At least they must be a contributing factor? Then again I mostly do process flow and metallurgy work these days so I may be losing my edge.
I guess I could always go out there and cut off my springs and weld them in straight for a data point
. As soon as someone makes a decent long travel shock for the rear I'll be bolting them in and see what happens. Until then I'll just bounce along my merry way. Bouncy, bouncy, bouncy..........into the sunset.