Hmp10
Well-Known Member
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- Mar 7, 2019
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- Naples, FL
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- 2015 Tesla Model S P90D; 2018 Honda Odyssey
I, too, have seen the 19,000 newton-meter figure for the Model S (which was a 2015 datum) and been unable to find the figure for a Model X. However, the car review with the most comprehensive discussion of torsional rigidity of the S and X I have found is below. It was testing a 2016 Model X.A web search turned up a torsional stiffness figure of 19,000 N-m/° for the Tesla S. Another website stated that the torsional stiffness of the NIO ES6 is 44,930N-m/° which, the president of the company bragged is twice that of the Tesla X. This suggests that torsional stiffness of the X must be about 22,500 N-m/° which is higher than that of the S.
The most salient passage read:
"Everytime the Model X hits expansion strips, potholes or broken pavement on the road surface, the front and rear body vibrates in different frequencies and phases, causing a temporary, but very pronounced high frequency, rapid “shaking” feel – this usually happens in some old school body-on-frame and long wheelbase trucks. At the same time, rattling noise around the FWD area can be heard too."
The article went on to discuss the specifics of the impact the Falcon-wing doors have on the structure:
http://youwheel.com/home/2016/04/22/driven-2016-tesla-model-x-p90d/
As this bears on Rivian, the remark about body-on-frame vehicles and long-wheelbase trucks caught my eye. The R1T wheelbase is 15" longer than the R1S wheelbase, and both are body on frame (albeit probably of state-of-the-art engineering on the torsional front). I'm really curious about how driving these vehicles on less-than-perfect surfaces will feel.
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