400 mile electric RV

Another possible path?

https://www.rv.com/rv/trending-rvs/all-electric-rv-line-coming-soon-from-sylvansport/?utm_source=exacttarget&utm_medium=email&utm_campaign=RMN023991_09302021

P.S. I didn't realize I had started the thread with this company.

Lynnmor wrote:

Timmo! wrote:
If we look under the hood of a train's locomotive we will see a large diesel engine that powers an electric generator that supplies electricity to powerful electric electric motors known as "traction motors".

That system is used in place of enormous transmissions and clutches.

And your point is?

Timmo! wrote:
If we look under the hood of a train's locomotive we will see a large diesel engine that powers an electric generator that supplies electricity to powerful electric electric motors known as "traction motors".

That system is used in place of enormous transmissions and clutches.

If we look under the hood of a train's locomotive we will see a large diesel engine that powers an electric generator that supplies electricity to powerful electric electric motors known as "traction motors".

https://en.wikipedia.org/wiki/Traction_motor

So this should diffuse any suggestion that electric motors lack torque or power.

Actually an EV motor does have a torque curve.

Also torque is typically limited electronically at low rpm to avoid excessive wheel spin.

free radical wrote:

TomD62 wrote:
... Electric motors make the same torque at 0RM as they do at full speed, 0RPM is where you really need the the HP of a ICE, not at top end, aside from hill climbing.

Incorecto ,
at 0 rpm nothing happens bc motor isnt turning,
Try 1 rpm ! :)

You can still have torque with no rotation -- torque is what starts the rotation, if you really had 0 torque at 0 rpm, you'd never start moving! Think of a beam style torque wrench, as long as you're pushing on the handle, you're imparting torque that you can measure on the scale, even if the bolt is not moving.

At 0 RPM you have 0 horsepower (since HP is the product of torque and RPM) but the instant the shaft starts moving, then you have HP.

Workhorse would make a nice MH if it had decent range.

https://electrek.co/2021/09/23/workhorses-new-ceo-halts-electric-van-deliveries-and-recalls-others-over-safety-concerns/

pianotuna wrote:
Hi,

I was sure this was coming--but not as soon as this!

https://www.yahoo.com/lifestyle/electric-adventure-rv-road-trip-180000971.html

Not to rain on your parade,but anyone can make cgi pics and claim all kinds of impresive numbers.
Remember Nikola ? Where is their truck.
How about Atlis?
List is long,real Evs are few.

Im sure EV motorhomes are coming,but not any time soon.
Takes lots of batteries to get that range.

TomD62 wrote:
I do think hybrids are the future for RVs, at least the higher end ones. Electric motors make the same torque at 0RM as they do at full speed, 0RPM is where you really need the the HP of a ICE, not at top end, aside from hill climbing. The other thing is , once you climb the hill and are descending, you can get much of that energy back with an EV instead of wasting it in the brakes or Jake. For around town and in the park Pure EV will be nice , quiet and no fumes, on the highway, I do think you'll still need a diesel Genset, but that can be pretty efficient since it can run at a fixed , most optimum RPM. For example, a Tesla X needs 15kWh to maintain 60MPH for an hour. An RV is probably double that, so generating 10Kwh can extend the range of a 120kWH battery from 4hrs to 6 hrs of driving. You can stop and rapid charge, or boondock way far from a charger and let the genset bring it up slowly.

Incorecto ,
at 0 rpm nothing happens bc motor isnt turning,
Try 1 rpm ! :)

I do think hybrids are the future for RVs, at least the higher end ones. Electric motors make the same torque at 0RM as they do at full speed, 0RPM is where you really need the the HP of a ICE, not at top end, aside from hill climbing. The other thing is , once you climb the hill and are descending, you can get much of that energy back with an EV instead of wasting it in the brakes or Jake. For around town and in the park Pure EV will be nice , quiet and no fumes, on the highway, I do think you'll still need a diesel Genset, but that can be pretty efficient since it can run at a fixed , most optimum RPM. For example, a Tesla X needs 15kWh to maintain 60MPH for an hour. An RV is probably double that, so generating 10Kwh can extend the range of a 120kWH battery from 4hrs to 6 hrs of driving. You can stop and rapid charge, or boondock way far from a charger and let the genset bring it up slowly.