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tahir



Joined: 28 Oct 2004
Posts: 45166
Location: Essex
PostPosted: Thu Jun 01, 23 1:52 pm    Post subject: Reply with quote
    

Yeah, most modern trucks are far too big (latest versions of Ranger, Hilux etc)

jema
Downsizer Moderator


Joined: 28 Oct 2004
Posts: 27931
Location: escaped from Swindon
PostPosted: Thu Jun 01, 23 2:06 pm    Post subject: Reply with quote
    

NorthernMonkeyGirl wrote:

I'd probably be a light user by most standards, but when I do need to tow then we're taking a full load a few hours on rough roads.


Towing remains a weakness as EVs don't on the whole have gears. So whilst I'm not totally clear on the physics, presumably towing pushes an EV out of its efficiency sweet spot.

tahir



Joined: 28 Oct 2004
Posts: 45166
Location: Essex
PostPosted: Thu Jun 01, 23 2:21 pm    Post subject: Reply with quote
    

Flying EVs are go:

https://electrek.co/2023/05/31/book-your-seat-for-sass-first-all-electric-flight/

dpack



Joined: 02 Jul 2005
Posts: 44467
Location: yes
PostPosted: Thu Jun 01, 23 5:17 pm    Post subject: Reply with quote
    

jema wrote:
NorthernMonkeyGirl wrote:

I'd probably be a light user by most standards, but when I do need to tow then we're taking a full load a few hours on rough roads.


Towing remains a weakness as EVs don't on the whole have gears. So whilst I'm not totally clear on the physics, presumably towing pushes an EV out of its efficiency sweet spot.


it might be a traction thing, a bit like locomotives when hauling heavy stuff

if it is 4wd +2 extra optional for hauling might work, up or down is not outside a decent engineer's capacities

or a radical rethink and the drive by wire ute powers and vectors a linked trailer

iirc the huge multisection things that move bridges and oil rig parts etc are all controlled from one seat, but they have multiple drives and steering for each section that follows the leader

dpack



Joined: 02 Jul 2005
Posts: 44467
Location: yes
PostPosted: Thu Jun 01, 23 5:28 pm    Post subject: Reply with quote
    

gears are not needed if the motive power has similar torque whatever the revs of the motor or wheels

decent leccy motors have a very wide full torque band

ice engines have a rev band where they work best and the gears adapt that to give max torque at a variety of road speed revs of the wheels

in most ways, leccy is far more simple engineering than ice to make a vehicle

the battery and motor details (and the seven sisters) have delayed things a bit since the 1890's but no need for that to be a problem now

Mistress Rose



Joined: 21 Jul 2011
Posts: 15101

PostPosted: Fri Jun 02, 23 7:23 am    Post subject: Reply with quote
    

For us towing a full trailer of logs would be essential. Basically we need a workhorse.

jema
Downsizer Moderator


Joined: 28 Oct 2004
Posts: 27931
Location: escaped from Swindon
PostPosted: Fri Jun 02, 23 7:30 am    Post subject: Reply with quote
    

Mistress Rose wrote:
For us towing a full trailer of logs would be essential. Basically we need a workhorse.


My guess is that as batteries get cheap, rather than gears in the EVs, we will see batteries in the trailers.

tahir



Joined: 28 Oct 2004
Posts: 45166
Location: Essex
PostPosted: Fri Jun 02, 23 12:51 pm    Post subject: Reply with quote
    

Plenty of potential for green energy if we can be bothered to do anything about it:

https://www.theguardian.com/environment/2023/jun/02/network-of-geothermal-power-stations-could-help-level-up-uk

jema
Downsizer Moderator


Joined: 28 Oct 2004
Posts: 27931
Location: escaped from Swindon
PostPosted: Fri Jun 02, 23 1:44 pm    Post subject: Reply with quote
    

tahir wrote:
Plenty of potential for green energy if we can be bothered to do anything about it:

https://www.theguardian.com/environment/2023/jun/02/network-of-geothermal-power-stations-could-help-level-up-uk


trouble is levelling up under the Tories is more likely to mean levelling someone's private road.
There's a ten year queue to get some renewable projects on the grid:
https://www.theguardian.com/business/2023/may/08/uk-green-energy-projects-in-limbo-as-grid-struggles-to-keep-pace

tahir



Joined: 28 Oct 2004
Posts: 45166
Location: Essex
PostPosted: Fri Jun 02, 23 1:46 pm    Post subject: Reply with quote
    

It's all insane, everything is within our reach if we focus investment wisely instead of "spaffing money up the wall" on all sorts of random make believe nonsense

tahir



Joined: 28 Oct 2004
Posts: 45166
Location: Essex
PostPosted: Fri Jun 02, 23 1:57 pm    Post subject: Reply with quote
    

Some good news on connections:

https://www.standard.co.uk/business/business-news/zombie-projects-to-step-aside-to-allow-quicker-linkups-to-national-grid-b1085218.html

dpack



Joined: 02 Jul 2005
Posts: 44467
Location: yes
PostPosted: Fri Jun 02, 23 6:00 pm    Post subject: Reply with quote
    

ummmm

it seems a bit silly to let a towel on a sunlounger preventing a lie down

when they mention it, thank them politely for putting it there ready for use

tahir



Joined: 28 Oct 2004
Posts: 45166
Location: Essex
PostPosted: Sat Jun 03, 23 6:05 am    Post subject: Reply with quote
    

Another new battery chemistry:

https://www.theengineer.co.uk/content/news/niobium-graphene-batteries-offer-challenge-to-lithium-ion

Mistress Rose



Joined: 21 Jul 2011
Posts: 15101

PostPosted: Sat Jun 03, 23 8:36 am    Post subject: Reply with quote
    

Tahir, there has been a geothermal power station in Southampton for decades. I saw it as at least a teenager, so must be best part of 60 years at least.

jema
Downsizer Moderator


Joined: 28 Oct 2004
Posts: 27931
Location: escaped from Swindon
PostPosted: Sat Jun 03, 23 9:39 am    Post subject: Reply with quote
    

tahir wrote:
Another new battery chemistry:

https://www.theengineer.co.uk/content/news/niobium-graphene-batteries-offer-challenge-to-lithium-ion


hmm, no mention of energy density, so I imagine that's not great.

I must admit to a bias, there's an idiot copy/paste posting continually the same graphene link for months now, and proclaiming it wonderful, but no battery tech is really any good until produced industrially so no one should be raving about anything until that happens.

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