Search found 2664 matches

by antiscab
Tue, 19 Aug 2008, 04:02
Forum: Admin Notices
Topic: Email notifications not working
Replies: 3
Views: 1440

Email notifications not working

Hi Mal,

when the main server went down, Andrew had to switch the forums to the backup server.
while we're on the backup servers, all sorts of things wont work right.
email notifications of any kind are on the things that dont work.

should be fixed when the main server is back up.

Matt
by antiscab
Mon, 18 Aug 2008, 05:55
Forum: Technical and conversion discussion
Topic: Reality check on motor/battery/donor combo please!
Replies: 13
Views: 5885

Reality check on motor/battery/donor combo please!

a few points of clarification: assuming your controller has good ripple caps on the battery side, and the motor has a reasonable amount of inductance, the controller will trade volts for amps. lfp90aha can do 270A continuous, but 450A for several seconds (with 500A+ for milliseconds if the ripple ca...
by antiscab
Sun, 17 Aug 2008, 03:47
Forum: Technical and conversion discussion
Topic: Make your mark on Australia.
Replies: 63
Views: 24919

Make your mark on Australia.

haha,

yeh, tuarns got a couple and ive got a couple aswell:p

just cant seem to stop at one.
by antiscab
Fri, 15 Aug 2008, 08:03
Forum: General EV Discussion
Topic: Corolla wagon 4WD conversion
Replies: 22
Views: 2734

Corolla wagon 4WD conversion

140kg is about what the ac55 weighs isnt it? i cant remember. i suggested 2x warp 9 from an efficiency point of view, smaller motors wont be as efficient, though might get the job done. maybe 2 x impulse 9s at 110kg might be better. the batteries of the size proposed can put out 170kw (1000A 172.5v ...
by antiscab
Fri, 15 Aug 2008, 05:10
Forum: General EV Discussion
Topic: Corolla wagon 4WD conversion
Replies: 22
Views: 2734

Corolla wagon 4WD conversion

2 direct driven DC motors (wired in series) will give the same effiency (from an energy used per km perspective) as a single AC motor with a gear box. both setups would cost a similar amount. both will need to be run at a similar voltage (300v) its just a matter of which is cheaper, easier and avail...
by antiscab
Thu, 14 Aug 2008, 18:50
Forum: Technical and conversion discussion
Topic: Reality check on motor/battery/donor combo please!
Replies: 13
Views: 5885

Reality check on motor/battery/donor combo please!

from memory, a warp 9 has max power point around 4000rpm, if you can feed it the full 1000A at 170v. the resistance loses in a electric motor are more significant than the mechanical friction loses. at a higher rpm you have to feed the motor less current for the same mechanical power output. the los...
by antiscab
Thu, 14 Aug 2008, 18:41
Forum: Batteries, charging, management and monitoring
Topic: problems with Odyssey pack
Replies: 9
Views: 1717

problems with Odyssey pack

for testing for intermittent current ability of a battery, i suggest buying one of these: http://cgi.ebay.com/ebaymotors/BRAND-NEW-500-AMP-CARBON-PILE-BATTERY-LOAD-TESTER_W0QQcmdZViewItemQQ_trksidZp1638Q2em122QQcategoryZ43989QQihZ008QQitemZ180274997392QQrdZ1QQsspagenameZWD2V very handy piece of equi...
by antiscab
Thu, 14 Aug 2008, 05:15
Forum: General EV Discussion
Topic: Corolla wagon 4WD conversion
Replies: 22
Views: 2734

Corolla wagon 4WD conversion

oh, when i refer to lessening the acceleration requirement not making anything cheaper, i was refering to a DC system.

AC is a different story.
by antiscab
Thu, 14 Aug 2008, 05:10
Forum: General EV Discussion
Topic: Corolla wagon 4WD conversion
Replies: 22
Views: 2734

Corolla wagon 4WD conversion

actually for 40kwh usable with 60AH cells, you need 260 units. you shouldnt have to rely on going past %80dod to get your range requirement (i learnt this the hard way). cutting back on the acceleration requirement wont make it cheaper, unfortunately. do you know what the ratios are on your current ...
by antiscab
Thu, 14 Aug 2008, 04:56
Forum: General EV Discussion
Topic: Lithium monoblock
Replies: 11
Views: 1282

Lithium monoblock

dont worry, a BMS isn't hard to wire up.
the wires are usually colour coded, just match up the colours :)
by antiscab
Thu, 14 Aug 2008, 04:43
Forum: General EV Discussion
Topic: Corolla wagon 4WD conversion
Replies: 22
Views: 2734

Corolla wagon 4WD conversion

hiya squid, welcome to the forum. if youre getting 10L/100km, you need usable capacity about 20kwh/100km. so for 200km range, you need 40kwh. to get 40kwh, you need 75x200AH lithium cells: weight will be 525kg max power will be 170kw. itll cost around $24k. have to say, range is expensive to buy, an...
by antiscab
Thu, 14 Aug 2008, 04:07
Forum: Batteries, charging, management and monitoring
Topic: problems with Odyssey pack
Replies: 9
Views: 1717

problems with Odyssey pack

how fast is the motor spinning at 60kmh? what motor are you using? what size wheels and what gearing are you using? max power is 75kw at 105v. this isnt much use if your motor back emf is 150v. instrument readings would definately be helpful. i think you can get a live current reading from the hairb...
by antiscab
Wed, 13 Aug 2008, 05:02
Forum: Batteries, charging, management and monitoring
Topic: problems with Odyssey pack
Replies: 9
Views: 1717

problems with Odyssey pack

out of curiosity, how much did the pc680's cost you?
by antiscab
Wed, 13 Aug 2008, 04:55
Forum: Batteries, charging, management and monitoring
Topic: problems with Odyssey pack
Replies: 9
Views: 1717

problems with Odyssey pack

you may have a few faults, lets see if we can separate them. your pack is way undersized for a car. at 1C you only have 7-8AH usable capacity. you are probably drawing faster than 1C continuous, so say 6AH. at such a fast discharge rate, the pack will sag, so you wont have 180v for much of the disch...
by antiscab
Wed, 13 Aug 2008, 04:29
Forum: General EV Discussion
Topic: The electric car that nobody wants.
Replies: 14
Views: 2635

The electric car that nobody wants.

im actually going to use a bmw diff 4.1:1 diff and bolt a kostov 11" directly to it. i only have 600mm of space between the centre of the diff and a cross member i cant cut into. a kostov 11 is 400mm the diff is about 220mm. im getting morrison engineering to machine the two together as one unit, ju...
by antiscab
Wed, 13 Aug 2008, 04:15
Forum: General EV Discussion
Topic: BMW 318 conversion
Replies: 6
Views: 1070

BMW 318 conversion

yeh its a good car to convert.
the speedo hook up is in the diff.
very simple to do.

ill take some pics of masons 318i for u 2morrow if you like?
PM your email address if your interested.
or alternatively just ask rob:p
by antiscab
Wed, 13 Aug 2008, 04:09
Forum: Technical and conversion discussion
Topic: Regen, can someone help
Replies: 29
Views: 4452

Regen, can someone help

sorry for coming across so harsh goombi.
on second read i could have done better.

i was trying to convey how a change in driving habits can reduce the effectiveness of regen, and improves range/mileage for any vehicle.
by antiscab
Wed, 13 Aug 2008, 03:28
Forum: Technical and conversion discussion
Topic: Regen, can someone help
Replies: 29
Views: 4452

Regen, can someone help

well caught richo,
it seems ive spent to much time over at the american forum.
everytime i c 60 i think mph :s

by antiscab
Tue, 12 Aug 2008, 18:23
Forum: Technical and conversion discussion
Topic: Regen, can someone help
Replies: 29
Views: 4452

Regen, can someone help

Goombi, 60kmh in 1300kg is 502kj. depleted over 6 seconds is 83.5kw. at 360v, thats 232A average (it will start out higher and fall as you go slower as its constant torque at the motor). 232A for 6 seconds is 0.387AH. at a nominal 288v, thats 111wh recovered (or in my case, just shy of 1km range). 6...
by antiscab
Tue, 12 Aug 2008, 06:19
Forum: Batteries, charging, management and monitoring
Topic: Parellel vs Series
Replies: 7
Views: 1685

Parellel vs Series

richo, y would you not want to parrallel the batteries first, the series them? most chinese scooters parrallel first, then series second. ive always questioned this. on the particular scooter i bought the 8 batteries never stayed properly balanced. part of the fix was to wire them in buddy pairs (ie...
by antiscab
Tue, 12 Aug 2008, 03:52
Forum: General EV Discussion
Topic: The electric car that nobody wants.
Replies: 14
Views: 2635

The electric car that nobody wants.

actually, one t-105 can be replaced with 2x 130AH LiFePO4. a 120v pack would weigh only 200kg:p t-105s shouldnt be discharged faster than about 400A peak 75A continuous, so 120v worth is 48kw peak, 9kw continuous. not exactly fast, but certainly very driveable. 40-50km range is when you're screaming...
by antiscab
Mon, 11 Aug 2008, 08:47
Forum: General EV Discussion
Topic: LPG/Natural gas generator backup & more
Replies: 12
Views: 1947

LPG/Natural gas generator backup & more

flooded lead acid are more forgiving when used by a beginner from a service life point of view. In a high voltage (48v+) environment, theyre also more dangerous due to the acid mist (which is conductive) they tend to form. If you look after them, they will indeed have a long service life, as will an...
by antiscab
Mon, 11 Aug 2008, 03:43
Forum: AEVA WA Branch
Topic: Introductions...?
Replies: 15
Views: 3599

Introductions...?

that is true.......
just dont get anything pinched between them....that really really hurts:p
lol

when your done with the prendev machine, you could have a crack at a permanent magnet motor

Matt
by antiscab
Mon, 11 Aug 2008, 00:57
Forum: AEVA WA Branch
Topic: Introductions...?
Replies: 15
Views: 3599

Introductions...?

the energy has to come from somewhere.
on the prendev website, it clearly states the motor has no electrical input.
no fuel input.
and yet makes 100kw?

this is a perpetual motion machine.
it doesnt work.

a quick googling of prendev turns up a whole bunch of people sucked in.

Matt
by antiscab
Mon, 11 Aug 2008, 00:38
Forum: General EV Discussion
Topic: Looking for some experience
Replies: 14
Views: 2231

Looking for some experience

the danger isnt from high current, its from high voltage. fuses only protect from high current. anything above 0.1A flowing through you is highly dangerous. it just so happens that skin has such a high resistance, that a high voltage is needed for 0.1A or more to flow through you. contactors and fus...