Search found 423 matches

by zeva
Sat, 19 Apr 2008, 22:36
Forum: General EV Discussion
Topic: EV attention seeking
Replies: 22
Views: 3520

EV attention seeking

Hi ngamoko, Don't worry, as an avid sports car enthusiast I've considered weight balance and distribution carefully! The MX5 has the reputation of being one of the best handling cars on the road (second maybe to the Lotus Elise) and having owned two of them now, I certainly agree and wouldn't want m...
by zeva
Fri, 18 Apr 2008, 19:27
Forum: General EV Discussion
Topic: Australian EV OEM Model
Replies: 40
Views: 7659

Australian EV OEM Model

ngamoko: Which patents are you referring to? The only ones which spring to mind are NiMH (patent owned by Chevron Texaco, but lithium is better anyway) and LiFePO4 (patent owned by Phostech). In the latter case, there are manufacturers around the world (e.g PHET) who are producing cells under licens...
by zeva
Fri, 18 Apr 2008, 04:26
Forum: General EV Discussion
Topic: Australian EV OEM Model
Replies: 40
Views: 7659

Australian EV OEM Model

One loophole with the 4 units thing is that there is a separate "kit car" class which, IIRC, can be sold in any quantity so long as the vehicle is supplied incomplete. But, it can actually be mostly completed, e.g the customer just bolts major sections together. And there's nothing stopping them fro...
by zeva
Thu, 17 Apr 2008, 06:50
Forum: AEVA WA Branch
Topic: DC Motors talk from WAEVA meeting, 16/4/08
Replies: 3
Views: 2460

DC Motors talk from WAEVA meeting, 16/4/08

Hi all, As promised here's a link to the presentation I gave at the last Western Australian Electric Vehicle Association (www.waeva.asn.au) meeting on DC motors for electric vehicles. Here's it is in PDF form: http://www.zeva.com.au/media/DCMotorsTalk-16April08.pdf I also showed a couple of videos o...
by zeva
Thu, 17 Apr 2008, 06:38
Forum: General EV Discussion
Topic: EV attention seeking
Replies: 22
Views: 3520

EV attention seeking

Greetings and welcome to AEVA http://forums.aeva.asn.au/smileys/smiley1.gif I can't speak from experience but, like you, I'm hoping my electric MX5 will be a great promotional tool for my business (and for the EV world in general!) For "turnkey conversions" over your side of the country, the two peo...
by zeva
Mon, 14 Apr 2008, 04:53
Forum: EV Motoring
Topic: "Electric ute brings power to the people"
Replies: 2
Views: 2657

"Electric ute brings power to the people"

For those who missed it, the Sunday Times newspaper here in WA had an article today called "Electric ute brings power to the people", detailing the Suzuki Mighty Boy conversion done by Rod Dilkes (from EV Power ): http://zeva.com.au/media/SundayTimes-13April08.jpg The article finishes with a mention...
by zeva
Sat, 12 Apr 2008, 00:57
Forum: Technical and conversion discussion
Topic: cables
Replies: 7
Views: 1622

cables

Just a quick update, the orange insulated welding cable is available in the following sizes: 16, 25, 35, 50, 75 and 95 (all in mm^2 of copper conductor). At present I have the 50 and 95 here, generally I'd recommend 50mm^2 for folks running ~500A controllers (the most common by far) and 95mm^2 for ~...
by zeva
Fri, 11 Apr 2008, 04:57
Forum: Technical and conversion discussion
Topic: cables
Replies: 7
Views: 1622

cables

Tuarn: Yeah the orange stuff is hard to find, isn't it! All welding cable is now orange jacketed so I'll make some enquiries about thinner stuff from my supplier. Altronics do have 14ga in orange but that's going to be far too small for power circuits. It kind makes sense that both positive and nega...
by zeva
Fri, 11 Apr 2008, 03:51
Forum: Technical and conversion discussion
Topic: cables
Replies: 7
Views: 1622

cables

G'day John, good to hear the Charade conversion is going well. If it were me, with a setup like that I'd go for 50mm^2 welding cable, which is approximately the same size as 0 gauge (AWG) wire. And just a reminder, legally all your high voltage lines (anything above 36V) have to have orange insulati...
by zeva
Mon, 07 Apr 2008, 19:37
Forum: Electric motors and controllers
Topic: Wheel Motors
Replies: 24
Views: 7170

Wheel Motors

Car sized hub motors are are all REALLY expensive, mark my word! They're still bleeding-edge tech, so you pay a huge premium. Plus, as Benonymous suggests, I'm skeptical about the performance hit carrying an extra 20kg of sprung mass on each wheel.. Right now (in my opinion) the best way to go is on...
by zeva
Sun, 06 Apr 2008, 02:34
Forum: Technical and conversion discussion
Topic: A call for professional EV conversion workshops?
Replies: 4
Views: 2963

A call for professional EV conversion workshops?

Hi all, Well I seem to be getting more and more requests through the ZEVA website of people looking for "turnkey" EV conversions - i.e they want an EV conversion, but don't have the time/space/expertise to do it themself. Six people in the last two days alone! So far I'm only aware of three workshop...
by zeva
Thu, 03 Apr 2008, 09:04
Forum: General EV Discussion
Topic: Ian's rant for the week: Middle men
Replies: 3
Views: 920

Ian's rant for the week: Middle men

Hallelujah, the aluminium frames are done and everything seems to fit where it should! Beautiful. Here's some pics:

http://zeva.com.au/conversion_blog.php? ... =1&post=10

Now it's time to get them TIG welded - hopefully that won't take another 2 months..
by zeva
Wed, 02 Apr 2008, 20:57
Forum: Batteries, charging, management and monitoring
Topic: GAIA batteries, new to me
Replies: 10
Views: 4305

GAIA batteries, new to me

Warning, the GAIA LiPo cells are really expensive.. I looked into LiPos from GAIA and Kokam for my MX5 (before going for the ThunderSkys). LiPo was going to cost around $50K for an EV sized pack! A little hard to justify, especially when you factor in the cycle life which is something like 1/3rd tha...
by zeva
Tue, 01 Apr 2008, 18:55
Forum: General EV Discussion
Topic: GM and the electric car
Replies: 5
Views: 1459

GM and the electric car

I've given on the big car makers. Multinational corporations necessarily exist to maximise profit in a competitive market, and they stand to make less if they start producing EVs, so why would they.. But I do think the revolution is on its way and will come from three main factions: - Specialised st...
by zeva
Tue, 01 Apr 2008, 04:49
Forum: Technical and conversion discussion
Topic: Hi folks, newbie here.
Replies: 24
Views: 4735

Hi folks, newbie here.

Well I always say the difference between AWD and 4WD is just semantics and marketing-speak. If your car has four wheels, they mean the same thing http://forums.aeva.asn.au/smileys/smiley17.gif But yes I acknowledge that they usually refer to different types of vehicles. I also kind of disagree with ...
by zeva
Tue, 01 Apr 2008, 03:24
Forum: Technical and conversion discussion
Topic: Hi folks, newbie here.
Replies: 24
Views: 4735

Hi folks, newbie here.

Direct drive AC in a 4WD vehicle, phwoar sounds expensive!! If you haven't come across it already, check out http://www.proev.com who are doing exactly that. I *think* the gearbox, transfer case and front diff are a single unit in Subarus, which complicates direct drive setups. The ProEV guys basica...
by zeva
Sat, 29 Mar 2008, 05:27
Forum: General EV Discussion
Topic: motor source
Replies: 6
Views: 1585

motor source

Hi lefty, welcome to the forum http://forums.aeva.asn.au/smileys/smiley1.gif The fundamental problem which springs to my mind is that it takes about 5kW to maintain an average vehicle at highway speed, and an electric motor from any single phase appliance is necessarily under 2.5kW power rating (tha...
by zeva
Sat, 29 Mar 2008, 05:17
Forum: General EV Discussion
Topic: Project Better Place
Replies: 1
Views: 665

Project Better Place

I just watched an excellent speech by Shai Agassi of Project Better Place , who talks about Israel's recent announcement and momentous plan to be entirely free from dependence on petroleum within the next decade - definitely worth a watch: http://video.google.com/videoplay?docid=6115647726887047092&...
by zeva
Thu, 27 Mar 2008, 06:41
Forum: General EV Discussion
Topic: Ian's rant for the week: Middle men
Replies: 3
Views: 920

Ian's rant for the week: Middle men

One thing that has surprised me when doing an EV conversion is how much time you spend waiting for things which are out of your control - such as parts on order or outsourced fabrication. Some of you will know I've been waiting a LONG time for some laser cutting which has been holding up my MX5 conv...
by zeva
Tue, 25 Mar 2008, 23:11
Forum: Technical and conversion discussion
Topic: Electric Torana
Replies: 4
Views: 2023

Electric Torana

Hi Benonymous (& boss), I think a Torana would be a great vehicle to convert, though you'd want it live up to its image and have a bit of pep - as such I'd recommend looking at a 9" motor instead of the 8" 203. AdvancedDC do the 9" FB1 but the NetGain WarP 9 is probably the best 9" around (in my hum...
by zeva
Thu, 20 Mar 2008, 21:12
Forum: AEVA WA Branch
Topic: WAEVA Social Events
Replies: 0
Views: 1023

WAEVA Social Events

Hi all, Great to see so many new faces at the meeting last night, I think that was our busiest one yet! With so many people and more formalised meetings becoming a necessity, I suspect we're all going to want some social events where we can just relax and chat with other members in a casual setting!...
by zeva
Sat, 08 Mar 2008, 22:43
Forum: EV Racing
Topic: EV Rally
Replies: 6
Views: 2050

EV Rally

Yeah I've definitely considered it, the big problem is battery capacity / range. Racing uses several times more energy per km than street driving, so you need a huge battery pack! (Or as you say, the facility to swap packs in/out easily.. and the packs to do it with) One of the few EV I know of in t...
by zeva
Thu, 06 Mar 2008, 02:29
Forum: Batteries, charging, management and monitoring
Topic: Constrained Lithium Supply
Replies: 6
Views: 4060

Constrained Lithium Supply

Good article. I remember reading something similar a few months back which pointed to the same conclusions: There isn't enough lithium in the world to replace all existing petrol vehicles with lithium battery powered EVs.. I've always been a fan of the Zebra (sodium salt) batteries, and as the artic...
by zeva
Tue, 04 Mar 2008, 01:25
Forum: Batteries, charging, management and monitoring
Topic: Free to good home: 20x Huanyu 18650 LiFePO4 cells
Replies: 2
Views: 1995

Free to good home: 20x Huanyu 18650 LiFePO4 cells

No problems, they're all yours! Cya at the WAEVA meeting Image
by zeva
Tue, 04 Mar 2008, 00:28
Forum: Batteries, charging, management and monitoring
Topic: Free to good home: 20x Huanyu 18650 LiFePO4 cells
Replies: 2
Views: 1995

Free to good home: 20x Huanyu 18650 LiFePO4 cells

Hi all, I have 20x 18650 LiFePO4 (Lithium Iron Phosphate) cells here from manufacturer Huanyu which I tested a while back, but now have no need for them - so are free to good home. Results from the tests are here, for interest: http://zeva.com.au/tech/LiFePO4.php They're not as good as PHET cells, b...