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[Moto7575]

[Richard230]

All I have been hearing about the Tesla Truck is that its windows are not rock-proof.   

[DonTom]

Elon has said he will not get into motorcycles. He was almost killed on one when he was younger and doesn't now really care for motorcycles.

Besides, I don't think we need another e-cycle brand quite yet. It's not a good time for the electric bike companies  to have too much competition  with each other yet, IMO, unless sales of electric motorcycles go way up, which may still take a while.

But I would like to see somebody make a decent E-RV in my lifetime, so I hope Elon gets into that soon, as then I will have  good excuse to get rid of this one.

There are a dozen new Tesla Super Chargers right here in Payson. And I could be charging all the time in this RV park with level two. Or even 120 VAC since I am staying here in Payson for several weeks.

I figure a decent ERV will require around 300 KWH worth of batteries for a decent range (450 miles or so), so that could be quite pricey and heavy for now. But it shouldn't need a generator with all those KWH available when it's not being driven.

More stuff needs to be designed to run on high voltage DC, such as the house AC units, microwave ovens, etc.   so there will be no need for inverters and will have much better efficiency.

So I am hoping the next will be an E-RV.

-Don- (Payson, AZ in a 454 CI ICE  RV <cough, cough!>)

[NEW2elec]

DonTom, they've been waiting on you.

[Crissa]

Designing small appliances to work on drive train DC is a bad idea. 

High voltage is just dangerous; you need bulky cables and lots of extra breakers.  It's efficient, but makes repair and using more dangerous than it needs to be.

AC is also more efficient to shape into whatever voltage you want - if you're drawing more than a few amps, it's actually more efficient to have one AC inverter that supplies devices that step down to their internal than many DC-DC converters.

It might work to have a few built-in devices share drive-train rails - like microwaves and stoves - but a microwave would need its own inverter internally for instance.  So it might be a wash.  And specialized appliances means more expense in design, sourcing, and maintenance.

-Crissa

[DonTom]

Designing small appliances to work on drive train DC is a bad idea. 

High voltage is just dangerous;

You seem to think 120 VAC and 240 VAC isn't so dangerous. People have been killed by as low as 60 VAC (confirmed), and some deaths at 48 VDC are expected (but not confirmed).

While I can agree it will be an expensive change at first, I expect it will happen and be reasonably safe, as we have now.  But perhaps not within my lifetime.

For now, I would be happy with a decent E-RV with a HV DC to 120 VAC high current inverter. Enough to run the RV house AC for many hours without a generator.

I can (and have many times) run my microwave oven from the inverter I have now--from the 12 volt house batteries. But it cannot handle the house Air Conditioner  when boondocked.  But the generator can run anything. Including charging my Zero DS which is with me.

But I am now in a full hook-up RV park anyway, even with TV cable.  Also with wireless internet that I do not use. I use my own V W/L  Hotspot which works a lot better.

-Don-  Payson, AZ (in boring ICE RV).

[Crissa]

The main drive rails are from 300-600v.  Volts have reach.  That's what makes them dangerous.  They can penetrate through more insulation.

It's not that AC vs DC is dangerous; it's just that high voltage DC is particularly likely to penetrate and create an ionization trail that creates fires.  And 300v can spark 3x as far or through many times more resistance of insulation.

-Crissa

[DonTom]

The main drive rails are from 300-600v.  Volts have reach.  That's what makes them dangerous.  They can penetrate through more insulation.

It's not that AC vs DC is dangerous; it's just that high voltage DC is particularly likely to penetrate and create an ionization trail that creates fires.  And 300v can spark 3x as far or through many times more resistance of insulation.

-Crissa

There's ways to deal with all of that. IMO, it's more of a question of when such will be done. Perhaps not in my lifetime.

-Don-  Payson, AZ

[Crissa]

There's ways to deal with it, sure.  Just, higher voltage raises costs.  Straight up.  And that might not be as efficient - bulkier wires, components, and more breakers all also weigh more so you might just lose that energy efficiency on another balance.

But it is something to think about, especially for appliances that don't move at all.  The Cybertruck proto had 240v AC in the back for charging the ATV.  Lots of appliances use that.

-Crissa