Search found 8034 matches

by Hillhater
Dec 13, 2017 12:25 am
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 1124
Views: 19127

Re: Wind and Solar vs Coal, Gasoline, Nuclear

Tesla's, "worlds biggest battery" is up and running in Australia.. (probably just testing i assume),.. but its discharge times and power levels can be viewed online here ... http://nem.mwheeler.org/stations#HPRG1 it has delivered several 30MW discharges for periods of 30+ mins and at least one 100MW...
by Hillhater
Dec 12, 2017 4:00 pm
Forum: Alternative Energy
Topic: 24V/48V UPS as an inverter for mini power-wall
Replies: 10
Views: 125

Re: 24V/48V UPS as an inverter for mini power-wall

Harold in CR wrote:
Dec 12, 2017 7:10 am
I have 2 of the older 24v 1400 Kva SMART APC UPS's. They put out a true sine wave. I believe I can parallel them to get twice the amp capacity .......
Dont you have to synchronise the sine waves ? ...is that automatic?, Or doesnt it matter ?
by Hillhater
Dec 11, 2017 10:07 pm
Forum: Alternative Energy
Topic: Tesla's World's biggest battery in South Australia!
Replies: 14
Views: 732

Re: Tesla's World's biggest battery in South Australia!

Tesla did what they promissed and installed the 100MW/129MWh battery within 100 days of contract signing. Its up and running , most likely only test/commissioning trials , but online and feeding 300MW intermittently into the grid. Some of the early tests were at 70MW. You can see its output graphed ...
by Hillhater
Dec 10, 2017 7:29 pm
Forum: E-Bike General Discussion
Topic: Car replacement in London/Other Cold Weather
Replies: 4
Views: 113

Re: Car replacement in London/Other Cold Weather

Are you saying the work base and home will be Wimbledon ? Because that is outside conjestion charge area and still very sub-urban. That area has plenty of public transport, underground, etc, and facilities for "living" (shops, schools, etc) , but if you think you are going to travel a lot for work t...
by Hillhater
Dec 10, 2017 5:13 pm
Forum: E-Vehicles General Discussion
Topic: Modularity and electric vehicles
Replies: 12
Views: 184

Re: Modularity and electric vehicles

Actually many types of commercial equipment do have "standardised" fitment ICE power units. The most common is probably the 5-6hp range of lawn maowers, garden tillers , cement mixers, compactors, powered wheelbarrows, generators, go karts, pumps, fans , etc etc....all from multiple manufacturers, b...
by Hillhater
Dec 10, 2017 4:55 pm
Forum: E-Vehicles General Discussion
Topic: And now for something completely different
Replies: 5
Views: 134

Re: And now for something completely different

Current have a neat idea there.... ....but i would expect a company selling solar powered transport and charging systems to have a better explanation of their system than ... ]".. solar panel array capable generating 2.4kW of renewable energy over 24 hours" ..... https://docs.wixstatic.com/ugd/5ceaa...
by Hillhater
Dec 09, 2017 7:03 pm
Forum: E-Vehicles General Discussion
Topic: Kelly KLS7230 + LMX
Replies: 6
Views: 148

Re: Kelly KLS7230 + LMX

My reseller answered that there is no issue with this controller and motor.. Askthat reseller to set it up for you if he is so confident...with the proviso that if he cannot do it, he replaces the controller with one that will work. ..Or just take the prooven solution of skeetab and replace it with...
by Hillhater
Dec 08, 2017 3:08 am
Forum: Battery Technology
Topic: Super capacitors to save battery life?
Replies: 42
Views: 694

Re: Super capacitors to save battery life?

A good quality beyyery shouldnt have weak cells/other problems after 300cycles....so i question the qyality of the packs you paid so much for. Ask what the problem was. For the same weight as those 22ah LTOs you could carry 60 ah of 18650s which would have 3000Wh of capacity likely lasting you all d...
by Hillhater
Dec 08, 2017 12:18 am
Forum: Battery Technology
Topic: Super capacitors to save battery life?
Replies: 42
Views: 694

Re: Super capacitors to save battery life?

You are really striking a poor compromise . Double the weight Much bigger volume 2/3 the capacity and range All for a slight reduction in charge time ? As was said early on, your 15ahr pack is capable of dealing with 500W of regen and a 1hr charge occasionally if that is needed. You just have to mak...
by Hillhater
Dec 07, 2017 10:24 pm
Forum: E-Vehicles General Discussion
Topic: Uniti — Swedish EV Startup
Replies: 6
Views: 511

Re: Uniti — Swedish EV Startup

Certainly some safety concerns, but better than a motor bike , ! And at least you stay dry until you get crushed to a pulp !
Or, maybe wear one of the foam Sumo suits for protection ! :!:
by Hillhater
Dec 07, 2017 10:19 pm
Forum: E-Vehicles General Discussion
Topic: Madness. Why such slow penetration for hybrid?
Replies: 60
Views: 1029

Re: Madness. Why such slow penetration for hybrid?

Punx0r wrote:
Dec 07, 2017 4:46 pm
A few BEV garage trucks are starting to appear: https://cleantechnica.com/2017/10/21/mo ... s-angeles/

It's an obvious application for an EV.
Had me puzzeled there for a moment....intil i spotted the typo....GARBAGE. Trucks ! :wink:
by Hillhater
Dec 07, 2017 4:19 pm
Forum: Battery Technology
Topic: Super capacitors to save battery life?
Replies: 42
Views: 694

Re: Super capacitors to save battery life?

..... I found these guys with a 30AH LTO https://www.ev-power.eu/LTO-technology/Lithium-Titanate-Oxid-Battery-Cell-LTO-2-4V-30AH.html 21 of those would get me 50.4 nominal voltage or about 1500 WH. After reading I am not to sure what the differences for bike application that the SCIB batteries and ...
by Hillhater
Dec 06, 2017 6:59 pm
Forum: Battery Technology
Topic: Any Tesla 18650 data sheets available from years gone by?
Replies: 7
Views: 255

Re: Any Tesla 18650 data sheets available from years gone by?

"Tesla" cells can be a bit missleading. Whilst they have been using mainly cells made and supplied by Panasonic, made to Tesla's spec, it is known that they have also used cells from LG, Samsung, Sanyo (now part of Panasonic) and likely others also. The only cells Tesla have actually manufactured th...
by Hillhater
Dec 05, 2017 6:58 pm
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 1124
Views: 19127

Re: Wind and Solar vs Coal, Gasoline, Nuclear

A unlikely comparason, the German power grid , to the USA... USA has 700,000 km of HV grid alone ...Germany has 20,000 ! And the US has approx 4 times as many consumers spread over a 10x bigger area. ! So its surprising the USA doesnt have more issues with power failures. But either way the figures ...
by Hillhater
Dec 05, 2017 3:30 am
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 1124
Views: 19127

Re: Wind and Solar vs Coal, Gasoline, Nuclear

Dispite retaining 100% thermal backup capacity , for thier much vaunted leading RE power generation program, Germany is learning that it takes more than just surplus capacity to maintain a reliable grid supply.... Over the past years the German state of Hesse has been plagued by power outages, Hesse...
by Hillhater
Dec 05, 2017 12:02 am
Forum: Battery Technology
Topic: Any Tesla 18650 data sheets available from years gone by?
Replies: 7
Views: 255

Re: Any Tesla 18650 data sheets available from years gone by?

Tesla's cells are not very high performance cells.
There are many 18650's with much higher discharge ability, some with more capacity,
Tesla's real advantage is their long cycle life with minimal capacity loss together with an aparent ability to tolerate low discharge voltage levels.
by Hillhater
Dec 04, 2017 4:09 pm
Forum: Battery Technology
Topic: Any Tesla 18650 data sheets available from years gone by?
Replies: 7
Views: 255

Re: Any Tesla 18650 data sheets available from years gone by?

I doubt you will find any "official Tesla" spec sheets or published data, ... But there is plenty of test data from reliable sources on this site.
Try the Search function.
by Hillhater
Dec 02, 2017 9:29 pm
Forum: Large EV General Discussion
Topic: Problem loading the E Gator rebuild thread ?
Replies: 1
Views: 77

Problem loading the E Gator rebuild thread ?

Anyone else have issues loading this thread ?
It may be my system, but its the only thread to lock up completly every time i try to view it ?
Possibly due to the quantity/size/resolution of the pictures ?
Comment from mods ?
by Hillhater
Dec 01, 2017 12:15 am
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 1124
Views: 19127

Re: Wind and Solar vs Coal, Gasoline, Nuclear

I was chatting with a director of Synergy, our monopoly electricity retailer here in Western Australia. He said something quite pertinent - "People don't see value in their electricity account. I mean, what does your $1500 a year get you? It gives you refrigerated fresh food, running water, cheap t...
by Hillhater
Nov 28, 2017 5:50 pm
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 1124
Views: 19127

Re: Wind and Solar vs Coal, Gasoline, Nuclear

There is no way in hell you can get enough solar (or wind) generated either for individual residences, or even on a suburb scale for city dwellers....even if they did own the residence and felt it worthwhile to invest more capital into the building...and forget any city outside the "sun belt" ! The...
by Hillhater
Nov 28, 2017 4:36 pm
Forum: E-Vehicles General Discussion
Topic: Electric go kart power train design
Replies: 4
Views: 143

Re: Electric go kart power train design

Be sure to configure the kart as a "Enduro", or lay back seat design to minimise drag.
lay down kart
And get a bearing hub for one rear wheel to cut out the cornering drag from the solid axle (single wheel drive)
by Hillhater
Nov 28, 2017 4:20 pm
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 1124
Views: 19127

Re: Wind and Solar vs Coal, Gasoline, Nuclear

Repeat ..Repeat,.. Again.. :roll: Majority of the developed world lives in cities, with a high proportion in apartment blocks....with the majority of those renting, not owned. There is no way in hell you can get enough solar (or wind) generated either for individual residences, or even on a suburb s...
by Hillhater
Nov 28, 2017 7:01 am
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 1124
Views: 19127

Re: Wind and Solar vs Coal, Gasoline, Nuclear

Countrys with high % of RE ( wind and solar) need high levels of storage or thermal back up generation.
by Hillhater
Nov 28, 2017 6:51 am
Forum: E-Vehicles General Discussion
Topic: Electric go kart power train design
Replies: 4
Views: 143

Re: Electric go kart power train design

Which is most critical...
Speed
Distance covered
Or run time ??
But either way, use lithium batteries as you will get much more energy (Wh) out of them than lead acid of the same Ah and voltage rating..
by Hillhater
Nov 28, 2017 12:40 am
Forum: E-Vehicles General Discussion
Topic: Demagnetized magnet for electronic throttle, help!
Replies: 12
Views: 202

Re: Demagnetized magnet for electronic throttle, help!

EddySPalm wrote:
Nov 27, 2017 4:41 pm
I was desoldering the cable from the brass piece that the magnet is glued to, so temp was well over 1800 degrees C...
:shock: 1800 C :shock: ...i highly doubt that temp, ...but if so, im surprised there is anything left !