Search found 92 matches

by Benonymous
Fri, 15 Jun 2012, 22:40
Forum: Batteries, charging, management and monitoring
Topic: Graphene supercapacitors made with a DVD burner
Replies: 1
Views: 813

Graphene supercapacitors made with a DVD burner

Heh! This means graphene won't cost $100 for a few cm squared of the stuff any more.

It may seem a bit unimportant but this is actually a terrific breakthrough. With big sheets of graphene, caps with massive capacities can be created. maybe well see a megafarad cap some day soon!
by Benonymous
Wed, 25 Jan 2012, 18:34
Forum: Batteries, charging, management and monitoring
Topic: A123 availability improving
Replies: 4
Views: 1114

A123 availability improving

Sorry, I didn't pick up the 20Ah cells on your post http://forums.aeva.asn.au/smileys/smiley9.gif The Chinese supplier you mentioned looks like much better value. I'm pleased to see the supplies becoming available, batteries are what really convinced me to wait before beginning a project. I've waite...
by Benonymous
Wed, 25 Jan 2012, 18:00
Forum: Batteries, charging, management and monitoring
Topic: A123 availability improving
Replies: 4
Views: 1114

A123 availability improving

Here's some 20aH pouch cells for $33 or so.   These look pretty decent.

http://www.ebay.com.au/itm/3-2V-20Ah-A1 ... 1c2323857d
by Benonymous
Tue, 15 Dec 2009, 21:13
Forum: Batteries, charging, management and monitoring
Topic: LiFePO4 terminals and straps chemistry
Replies: 27
Views: 8332

LiFePO4 terminals and straps chemistry

Using aluminium for any high current electrical application is just asking for trouble. There are still fires in the USA attributed to the use of aluminium cable and terminals in houses. The aluminium was used to reduce costs, not because it's a superior material for the job. But hey! it's the USA a...
by Benonymous
Mon, 17 Aug 2009, 15:14
Forum: General EV Discussion
Topic: Suitable FWD Gearbox
Replies: 15
Views: 1580

Suitable FWD Gearbox

I agree on the $$$ issue with this motor/transmission unit. When I see acres of CNC'd alloy my first reaction is "'spensive!" If you want a FWD gearbox that can handle the torque of the electric motor, maybe a Mitsubishi unit from a V6 Verada or similar would be strong enough. It would depend on the...
by Benonymous
Thu, 13 Aug 2009, 22:27
Forum: General EV Discussion
Topic: anyone know what cvt this EV uses?
Replies: 5
Views: 1591

anyone know what cvt this EV uses?

Ahh yes, the seductive CVT... The CVT on this awful chassis appears to be of the "cone and belt" variety. This is a similar setup to the DAF. The DAF transmission is somewhat more compact than this one though http://forums.aeva.asn.au/smileys/smiley5.gif Other sources of modern CVT's are Honds Civic...
by Benonymous
Thu, 13 Aug 2009, 22:15
Forum: General EV Discussion
Topic: Obama invests in batteries for EVs
Replies: 32
Views: 3410

Obama invests in batteries for EVs

Why on earth Peter Garrett joined the ALP instead of the greens I'll never know! This is a good initiative from the yanks but just watch China. They won't announce any state funding for this kind of research and development, they'll just DO it. If there is any country in the world that realises the ...
by Benonymous
Fri, 17 Jul 2009, 19:56
Forum: General EV Discussion
Topic: Aeromods, very interesting
Replies: 4
Views: 719

Aeromods, very interesting

This is not an EV but I think it's relevant to anyone contemplating a conversion. The Civic in this article has had some (slightly crude) aeromods done to it. They are quite extensive and the owner has proved that they are very effective with coast-down tests and so forth. This sort of modification ...
by Benonymous
Mon, 13 Jul 2009, 16:02
Forum: General EV Discussion
Topic: Hybrids: heresy or handy?
Replies: 43
Views: 4080

Hybrids: heresy or handy?

UMMM, maybe better not say what the replacement was..... Ok I'll fess up, I replaced it with an '06 Subaru WRX wagon http://forums.aeva.asn.au/smileys/smiley9.gif As it stands I'm unlikely to do a conversion on an existing car. My thinking for a BEV is to construct a very light vehicle for the purpo...
by Benonymous
Thu, 09 Jul 2009, 15:29
Forum: General EV Discussion
Topic: Hybrids: heresy or handy?
Replies: 43
Views: 4080

Hybrids: heresy or handy?

I can fully understand the appeal of a home spun EV conversion on an old car. Hell, I was a MK1 Cortina addict for years, I had three of them all up! What turns me off the idea is that i know how crude (simple) the vehicles are and if I'm carting my kids around I like having ABS and airbags. I don't...
by Benonymous
Wed, 08 Jul 2009, 15:32
Forum: General EV Discussion
Topic: Hybrids: heresy or handy?
Replies: 43
Views: 4080

Hybrids: heresy or handy?

I just sold an '04 Prius after nearly four years of ownership and I really enjoyed the experience. I think the best way to tackle any mods on the car is via the 'expanded pack' route. The electric motor in the car is used primarily to move the car from stationary to around 50Kmh at least that's what...
by Benonymous
Tue, 07 Jul 2009, 20:19
Forum: General EV Discussion
Topic: MagniWorks an option?
Replies: 28
Views: 4269

MagniWorks an option?

Here's the Cycclone engine. http://www.cycclone.com/ You'll notice there isn't a single example of a working engine on the site. By "working" I mean a unit doing [/b] work http://forums.aeva.asn.au/smileys/smiley2.gif Ralph Sarich invented the "Orbital Engine" which also never made an appearance exc...
by Benonymous
Tue, 07 Jul 2009, 17:27
Forum: General EV Discussion
Topic: New Alternative Energy Vehicle: Riversimple
Replies: 2
Views: 907

New Alternative Energy Vehicle: Riversimple

That is a really good little vehicle. Just what I have been dreaming about...
by Benonymous
Tue, 07 Jul 2009, 16:57
Forum: General EV Discussion
Topic: MagniWorks an option?
Replies: 28
Views: 4269

MagniWorks an option?

Gawd! Not the "magnet motor" thing again. When you see one of these things demonstrated, take note of the method. The demonstration pretty well always begins with the device being "started" with an external power source, after that the "over unity" device then runs "on its own" without the external ...
by Benonymous
Thu, 11 Jun 2009, 22:28
Forum: General EV Discussion
Topic: MiEV to cost $60,000
Replies: 7
Views: 596

MiEV to cost $60,000

I'm with you Hoops. I believe strongly that the manufacturers are dragging their feet on purpose. Pitching the iMiEV at early adopters with a massive pricetag will work the same way as the Honda Insight. The demand will have a very short sharp peak as the well heeled enthusiasts buy in but then it'l...
by Benonymous
Thu, 11 Jun 2009, 15:33
Forum: General EV Discussion
Topic: MiEV to cost $60,000
Replies: 7
Views: 596

MiEV to cost $60,000

Why?   Is it just the batteries? I really can't believe it but I suppose that all of the major companies have efficient methods for making ICE cars and creating electric vehicles requires a lot of new plant and tooling. It seems like all the steam has gone out of factory EV's now that the price of o...
by Benonymous
Mon, 01 Jun 2009, 16:58
Forum: General EV Discussion
Topic: Light weight kit car, 4 wheel drive.
Replies: 14
Views: 2094

Light weight kit car, 4 wheel drive.

If you're building the Ron Champion chassis, be aware that it will not achieve the 4000kg/in torsional rigidity required for registration. There is a PDF floating around somewhere with additional tubes that must be added to the chassis to get it up to spec. If you really want to go 4WD why not start...
by Benonymous
Tue, 16 Dec 2008, 18:47
Forum: Electric motors and controllers
Topic: Tritium Wavesculptor
Replies: 22
Views: 5013

Tritium Wavesculptor

I corresponded with one of the engineers at Tritium and they are developing a much larger controller (40kW I think) and will be pricing it around the $7K mark. No news on that for a while though.
by Benonymous
Tue, 09 Dec 2008, 16:40
Forum: General EV Discussion
Topic: EV-1 Lives again!
Replies: 0
Views: 518

EV-1 Lives again!

http://au.youtube.com/watch?v=YCBc8pL1SGc&feature=rec-HM-fresh+div http://au.youtube.com/watch?v=UjKG5bVeCDs&NR=1 Read the info section on each clip. GM has already threatened the owner that the car is NOT to be driven on public roads ans a BEV. GM just don't get it do they. Here they are begging fo...
by Benonymous
Mon, 01 Dec 2008, 20:23
Forum: General EV Discussion
Topic: Michelin wheel motor
Replies: 4
Views: 516

Michelin wheel motor

Expect to see more EV products coming out of mainstream industry.


http://www.michelin.co.uk/michelinuk/Af ... s_Id=23759
by Benonymous
Wed, 08 Oct 2008, 17:03
Forum: Batteries, charging, management and monitoring
Topic: Ultra Batteries
Replies: 15
Views: 2152

Ultra Batteries

It looks like there will be a useful (not startling) reduction in price but there's still lead in them batts. If they could get them to market for an equivalent price to current FLA or SLA batteries that'd be better news.
by Benonymous
Thu, 18 Sep 2008, 15:31
Forum: Technical and conversion discussion
Topic: 100kW AC Inverter Project (Opensource)
Replies: 75
Views: 33348

100kW AC Inverter Project (Opensource)

Most EV inverter/controllers have the CAN bus. I believe this open source project has CAN. Anyway, that's the only thing I think you left off your list. The big cost with this project is going to be the Powerex IGBT modules. The last time I checked, the ones used in the documentation cost around $49...
by Benonymous
Tue, 09 Sep 2008, 21:27
Forum: Technical and conversion discussion
Topic: Accelerator Pedal Sensors
Replies: 41
Views: 5295

Accelerator Pedal Sensors

Looks like a Hall Effect sensor to me. Cheap enough to get one and pull it apart.