viatorem replied on 29/01/2018 09:39
Posted on 29/01/2018 09:39
Something I posted on another thread regarding EV but could be of interest.
Done some digging on the Tesla model X as it is possibly the most advanced therefore a likely likely towcar.
All this is gleaned from Teslas US owners forum and other web searches So may not be Factual. Please verify for yourself before making a purchasing decision!
OK so the P100 spec car solo has a specced range of 351 miles in ideal conditions. In the real world using heaters, aircon against the wind and up hills at motorway speeds owners report 250-260 miles with a slight drop off in battery capacity as the battery initially ages so your 351 drops to 340 over the 1st three months then stabilises.
Towing capacity on 20" wheels is 2250Kg and curiously only 1500Kg on 22" wheels.
Some considerations are that aerodynamics play an important part in all Tesla designs so wacking a brick on the back will mess up the aero package somewhat more than conventional cars. Also stop start traffic could have an impact on range especially on a gradient.
One US owner has reported towing a boat (probably more aerodynamic than a caravan) of 2204Kg Towing performance as expected from the powerful electric motors is more than adequate, but he quotes energy usage of 575Whrs/mile solo and up to 800Whrs /mile towing which is 40% more.The owner estimated that in the worst case energy usage could be up to 60% more on gradient (hilly) routes backed up by the other tow test below. Taking the above best case and simply extrapolating the real world mileage would indicate a towing range of 150 miles max. Reducing the towing weight to 1500Kg would give approx 160 miles range. so you would probably need to pull off the motorway at 140 miles for a recharge. Maybe less if Van aerodynamics play more of a part.
If the service station has a Tesla supercharger the battery will charge at a rate of 167 miles per 20 mins so about 45 mins or so for a full charge. However on a standard charger the charge rate is 25 miles per hour so you could be there 10hrs for a full charge.
another test
Here is a summary of a US model X user towing a teardrop van of 573Kg possibly 750Kg laden
Towing distance: 1,003 miles (1,033 total)
Number of Supercharger stops: 11
Average stop time: 1 hour, 34 minutes
Average Energy consumption: 612 Wh/mile
Travel time: 40.25 hours (23.02 hours driving, 17.23 hours charging)
Average travel speed: 24.9 mph
So EV's have a long way to go in my opinion, a decent battery would help!
90 miles between charges!
details of the above trip here
viatorem