Search found 3597 matches

by acmotor
Sat, 29 Sep 2007, 06:20
Forum: Technical and conversion discussion
Topic: AC conversions
Replies: 7
Views: 2145

AC conversions

I ran the specs for 1.1 to 22kW 2,4,6 and 8 pole motor (Nm,kg,Nm/kg and kW/kg) through excel and graphed them. Very interesting. For the Western Electric motors (fairly typical of most manuf.), the 11kW 4 pole induction motor was by far the best combination of size, weight and power. By a factor of ...
by acmotor
Tue, 25 Sep 2007, 07:37
Forum: Technical and conversion discussion
Topic: AC conversions
Replies: 7
Views: 2145

AC conversions

The motor you seek is an off the shelf industrial item in USA and Japan in the 240V AC 3 phase version. (240 in delta and 415 in star) In Oz it will be 415V (connected in delta or 690 V in star). Don't be afraid of the voltage though. It means you have less current. You would have to make a special ...
by acmotor
Sun, 23 Sep 2007, 04:50
Forum: General EV Discussion
Topic: Pointers for a newbie
Replies: 5
Views: 1050

Pointers for a newbie

Not everyone has the mechanical/electrical skills, budget and workshop space !!! http://forums.aeva.asn.au/smileys/smiley19.gif .... but keep researching, that part is cheap ! Hopefully through groups such as the WAEVA you, me and many others will be able to gain the knowledge and be helped along th...
by acmotor
Mon, 17 Sep 2007, 04:49
Forum: Batteries, charging, management and monitoring
Topic: Range question
Replies: 4
Views: 1497

Range question

Technically see http://en.wikipedia.org/wiki/Peukert's_law But simply... you don't get all the power back when you discharge rapidly. http://forums.aeva.asn.au/smileys/smiley11.gif http://forums.aeva.asn.au/smileys/smiley19.gif http://forums.aeva.asn.au/smileys/smiley7.gif This varies with different...
by acmotor
Sat, 15 Sep 2007, 06:20
Forum: Batteries, charging, management and monitoring
Topic: Range question
Replies: 4
Views: 1497

Range question

Thalass, Amps are half the equation, volts are the other. Watts = volts x amps. and simply Wh = V x Ah. http://forums.aeva.asn.au/smileys/smiley1.gif Remebering that Wh is the energy available, so if it takes twice the energy to go twice as far then thats twice the Wh required. You can have 100V at ...
by acmotor
Fri, 07 Sep 2007, 05:46
Forum: Technical and conversion discussion
Topic: Regenerative braking
Replies: 55
Views: 12146

Regenerative braking

True there is limited regen available from a cleaver controller at higher revs from a series DC motor.... but AC systems can provide 90% efficient regen up to the max motor torque at nearly all speeds !! Completely different beast ! Image
by acmotor
Fri, 07 Sep 2007, 05:42
Forum: Technical and conversion discussion
Topic: New member and new conversion
Replies: 5
Views: 1641

New member and new conversion

Hi jpcw,

Good luck with the conversion, I'll see you on the 15th Sept BBQ. Image
by acmotor
Sat, 18 Aug 2007, 05:04
Forum: Batteries, charging, management and monitoring
Topic: Hybrids
Replies: 13
Views: 2696

Hybrids

Can you bring the fan to the next meeting, 22nd Sept ?
I for one would be very interested in seeing it.
Image
by acmotor
Tue, 31 Jul 2007, 17:57
Forum: Technical and conversion discussion
Topic: Another Perth Conversion
Replies: 4
Views: 1634

Another Perth Conversion

Hi vne165, Welcome to the waeva forum. Sounds like you have been busy ! http://forums.aeva.asn.au/smileys/smiley32.gif Join the AEVA (if not already). See applications etc on this waeva site. The last event (21st July)was a bbq workshop meeting at Rob's factory unit. We had 45 attend. We drove some ...
by acmotor
Sun, 29 Jul 2007, 19:18
Forum: Batteries, charging, management and monitoring
Topic: Hybrids
Replies: 13
Views: 2696

Hybrids

Good point, Nullarbour and all that. As it is, the max distance between service stations out there is around 137km ? from memory. We all know of a lithium batteried Mustang locally that could make the trip station to station right now and potentially recharge in less than an hour. So we are not real...
by acmotor
Tue, 10 Jul 2007, 08:20
Forum: Technical and conversion discussion
Topic: Regenerative braking
Replies: 55
Views: 12146

Regenerative braking

Hi Turtle, Home grown conversion. Guess you're talking red suzi here. Like a working man's version of an AC Propulsions AC-150 http://www.acpropulsion.com/ nice bit of kit, but at $35k + some serious batteries you start to look $100k in the face ! http://forums.aeva.asn.au/smileys/smiley11.gif My EV...
by acmotor
Sat, 09 Jun 2007, 02:27
Forum: Technical and conversion discussion
Topic: NCOP14 regulations, venting of battery
Replies: 12
Views: 2433

NCOP14 regulations, venting of battery

Thanks for the enlighteneing reply PB Image
by acmotor
Wed, 06 Jun 2007, 04:35
Forum: Technical and conversion discussion
Topic: NCOP14 regulations, venting of battery
Replies: 12
Views: 2433

NCOP14 regulations, venting of battery

I'm working through the NCOP14 document (see waeva links) and I am questioning the need for vented battery boxes when using sealed (SLA) batteries. True these can gas under extreme conditions of overcharge but will not release any gas (hydrogen of most concern) when a battery management system is in...
by acmotor
Thu, 24 May 2007, 04:45
Forum: Batteries, charging, management and monitoring
Topic: fast charging
Replies: 13
Views: 2856

fast charging

Well hot diggidy doggy ! Mc Fries takes on a whole new meaning !! http://forums.aeva.asn.au/smileys/smiley36.gif Seriously though, the point is a good one. At last the parking authorities at UWA and the like will have to provide a service for the money they charge. Parking bays will have to be charg...
by acmotor
Sat, 19 May 2007, 04:59
Forum: Batteries, charging, management and monitoring
Topic: Hybrids
Replies: 13
Views: 2696

Hybrids

Yep. You see, the oil companies don't mind selling you half as much fuel. Then they can double the price and will still make the same money out of you while you think how great it is that you are making a "saving". Personally I think hybrids stink ! They are after all a very complex half measure unt...
by acmotor
Fri, 18 May 2007, 05:25
Forum: Batteries, charging, management and monitoring
Topic: fast charging
Replies: 13
Views: 2856

fast charging

Image ...but if plugging into a 10Amp 240V single phase outlet is an "inconvenience" then just wait till you have a 70kWh battery pack and you have to find a 32Amp 3 phase outlet to plug into !!!!!
Image
by acmotor
Tue, 01 May 2007, 07:41
Forum: General EV Discussion
Topic: ADRs and EVs
Replies: 2
Views: 922

ADRs and EVs

Here is the gov site for ADRs. If anyone has time to browse through, tell me if there are any regs that apply specifically to EVs. Image
http://www.dotars.gov.au/roads/motor/de ... nline.aspx

hey webmaster... what's with the date below ?
by acmotor
Mon, 30 Apr 2007, 03:47
Forum: Technical and conversion discussion
Topic: Regenerative braking
Replies: 55
Views: 12146

Regenerative braking

I have regenerative braking on my AC motor conversion. The controller will regenerate down to stop with as much torque as it will accelerate. So much so that I rarely use the brake pedal at all. Surely you would only not have regenerative braking if you ran a series DC motor and regeneration was not...
by acmotor
Sun, 29 Apr 2007, 23:47
Forum: General EV Discussion
Topic: changing habits and expectations
Replies: 29
Views: 2613

changing habits and expectations

There may need to be a shift in peoples' expectations for us to be able to embrace the new world of electric vehicles. There are the big pictures of the change in the world's economy, the politics and the power base. You are welcome to discuss these, however this post is aimed at the the more techni...
by acmotor
Sun, 29 Apr 2007, 23:19
Forum: Batteries, charging, management and monitoring
Topic: fast charging
Replies: 13
Views: 2856

fast charging

There is an obsession with fast charging where people want to be able to 'fill' their car in 10 minutes. This is presumably to make it comparable with their IC motor vehicle in use. (see post on changing habits and expectations) The problem is not in making the battery technology able to charge in 1...
by acmotor
Thu, 26 Apr 2007, 03:51
Forum: Batteries, charging, management and monitoring
Topic: Lithium Ion Batteries
Replies: 32
Views: 5947

Lithium Ion Batteries

Does anyone have experience with the life expectancy of Lithium Ion Batteries ? http://forums.aeva.asn.au/smileys/smiley24.gif The cost is very high at present and the 'how long will they last ?' question must be asked. Will they give up after 1000 cycles if you use them every day ? or give up after...
by acmotor
Thu, 26 Apr 2007, 03:43
Forum: AEVA WA Branch
Topic: Thanks to webmaster
Replies: 1
Views: 1176

Thanks to webmaster

Many thanks to Webmaster Andrew for getting the newly formed WAEVA online. http://forums.aeva.asn.au/smileys/smiley20.gif It is a very different world to the one in 1973 when the AEVA first started ! Media and education mean that we understand more now why the electric vehicle gets crushed rather th...