Remember that air resistance goes up as the cube of speed. So just
cutting speed 20% will reduce the wind load about half
Bob
On Thu, May 6, 2021 at 4:08 PM Peri Hartman via EV <[email protected]> wrote:
>
> Just out of curiosity, how much of the loss is due to air resistance ?
> You might try driving at half the speed and taking similar measurements.
> A little math will tell you what percent comes from air.
>
> I think your assumption that it comes from air is reasonable. But before
> you launch into work and spending money, it might be good to know.
>
> Peri
>
> << Annoyed by leaf blowers ? https://quietcleanseattle.org/ >>
>
> ------ Original Message ------
> From: "Mark Hanson via EV" <[email protected]>
> To: [email protected]
> Cc: "Mark Hanson" <[email protected]>
> Sent: 06-May-21 12:11:13 PM
> Subject: [EVDL] Improving EV range aerodynamics when towing a boat or
> trailer.
>
> >Hi Folks
> >When I tow my 6x16 H20 ski boat 1480lbs behind the 3600lb Bolt or 4400lb
> >Tesla, watt-hours doubles and associated range is cut in half. I thought the
> >Tesla y would be better due to the weight ratio but measures about the same
> >reduction driving the same 2 hour path to the lake. I could put the
> >windshields on hinges but that’s quite a bit of work. Thinking covering the
> >boat with a high speed rated cover to remove the seating area cavity and
> >redo the test measurements. Any other ideas? With 316 mile Tesla range cut
> >in half, I feel comfortable with a lake up to 70 miles away but there’s some
> >near Roanoke that are a bit further.
> >Stay Charged,
> >Mark
> >
> >Sent from my iPhone
> >_______________________________________________
> >Address messages to [email protected]
> >No other addresses in TO and CC fields
> >UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
> >ARCHIVE: http://www.evdl.org/archive/
> >LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org
>
> _______________________________________________
> Address messages to [email protected]
> No other addresses in TO and CC fields
> UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
> ARCHIVE: http://www.evdl.org/archive/
> LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org
_______________________________________________
Address messages to [email protected]
No other addresses in TO and CC fields
UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
ARCHIVE: http://www.evdl.org/archive/
LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org
