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  1. JohnVL

    Broomfield, CO - What Time to See an R1S on Sunday, September 25 2022?

    My wife and I would love to come down around 10:30 to check it out.
  2. JohnVL

    Rivian technical nuggets gleaned from EPA application docs

    They must be. The sand around the great lakes specifically Buffalo is very hard packed where vehicles drive on it. It doesn't leave much of a mark after passing. In thinking about it I'm pretty sure they used heavy machinery to pack the sand down. In my Leaf I haven't had much of a hard time...
  3. JohnVL

    Rivian technical nuggets gleaned from EPA application docs

    I have a Leaf and I can tell you how mine reacts. It helps a lot to have it warm in the garage to start. The car does not warm up like an ICE vehicle. Once you are in the cold the cars HVAC has to start working. It also starts to run the thermal management for the battery. Over time think of the...
  4. JohnVL

    Rivian technical nuggets gleaned from EPA application docs

    Your c~.3 for sand is loose sand per engineering toolbox.com. Packed sand which is what most people would drive on is c~.04-.08. It is not nearly as detrimental as you indicate. If you have ever 0.3 is the rolling resistance of loose sand. The traction coefficient μt is 0.3 - 0.4. this is...
  5. JohnVL

    Had call with Rivian Guide, delay on Ocean Coast interior

    Having set up a manufacturing facility none of this surprises me. Building cars at volume is incredibly difficult. It is also impossible to give an answer if you have one bad supplier. For example it is likely the plastic injection molding does for the vents were made out of aluminum for the...


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