Quote:
Originally Posted by Hersbird
On the highway, cargo completely enclosed inside isn't going to affect gas, diesel, or EV significantly .
There are downhill roads that even with max regen braking are going to require either nauseatingly slow speeds or actual friction brake applications. We have a lot of passes here that have nice long straight downhills, followed by 25 mph hairpins, followed by nice long straight sections. You could probably just hold 30 mph on the whole thing but you usually let it pick back up some speed. TFLcar has been doing some EV testing up and down Loveland pass in Colorado from 5000 ft Boulder to 12,000 foot summit and they still don't gain much if any battery back onnthe downhill. They also run climate control and maintain speed limits and such to try and make it what a normal person might expect. They have only done the Kona and the Golf but they have a Model X too, I just haven't seen that episode. The Golf actually couldn't make it without a mid charge, but the Kona did it no sweat with 120 miles of range left.
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I've watched the TFLcar Tesla Model X-Cimmaron tow test on Loveland Pass.Here are some observations:
*The RAM pickup pulled the horse trailer at 70-mph,10-mph over the posted speed limit.
*The S.A.E. Davis Dam tow-tests are conducted at 35mph-55-mph.
*The RAM was not pulling it's maximum rated weight,as was the Tesla.
*The ratio of trailer frontal area-to-RAM frontal area was a fraction of that for the Tesla.
*With a 1,068.8 kWh pack,the RAM had a climbing range of 278.8-miles,consuming 3,389 Watt-hours/mile.
*@ 8.7-mpg,the RAM was getting 51.1% of its solo mpg.
*The RAM descended Loveland Pass at 70-mph.
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*No aerodynamic accounting is made for the addition of tow mirrors to the Tesla.
*The Tesla was pulling it's gross trailer weight,unlike the RAM.
*The Tesla was not allowed to 'enter' the climb,already 'cruising' at 70-mph.
*The Tesla was not allowed to maintain its 70-mph speed up the incline.We are not given a complete accounting for a 70-mph climb/pull.
*The ratio of trailer frontal area,to that of the Tesla is out of proportion compared to that of the RAM.
*Again,the test velocity exceeds that of S.A.E. Davis Dam protocol.
*The Tesla was not allowed to descend the grade at 70-mph,ruining its ability to harvest the down-slope with regen (which only recovered 12-miles of range and 4% battery,from 60-mph,instead of 19-miles).
*The Tesla never 'braked' on the down-slope.No kinetic energy was lost to friction-heating at the rotors/pads.
*If the Tesla had a pack as large as the RAM,its solo range would be 4,238.9-miles.Pulling any kind,and any weight of trailer up to Eisenhower Tunnel would be a wash.
It would be a great service to all consumers (since we're no longer citizens)to have all testing done,following a standardized checklist,including all pertinent data.Garbage in,garbage out.